1994 GMC Sierra Owners Manual

Always clean a whole trim panel or section. Mask surrounding trim along stitch or welt lines. Mix Multi-Purpose Powdered Cleaner following the directions on the container label. Use suds only and apply with a clean sponge. Don’t saturate the material. Don’t rub it roughly. As soon as you’ve cleaned the section, use a sponge to remove the suds. Rinse the section with a clean, wet sponge. Wipe off what’s left with a slightly damp paper towel or cloth. Then dry it immediately with a blow dryer or a heat lamp.

I NOTICE:

fabric.

I Be careful with a hair dryer or heat lamp. You could scorch the

Wipe with a clean cloth.

6-81

Using Solvent-Type Cleaner on Fabric First, see if you have to use solvent-type cleaner at all. Some spots and stains will clean off better with just water and mild soap. If you need to use a solvent:

0 Gently scrape excess soil from the trim material with a clean, dull knife

or scraper. Use very little cleaner, light pressure and clean cloths (preferably cheesecloth). Cleaning should start at the outside of the stain, “feathering” toward the center. Keep changing to a clean section of the cloth.

0 When you clean a stain from fabric, immediately dry the area with an air hose, hair dryer, or heat lamp to help prevent a cleaning ring. (See the previous NOTICE.)

Fabric Protection Your vehicle has upholstery and trim carpet that has been treated with Scotchgard TM Fabric Protector, a 3M product. Scotchgard TM protects fabrics by repelling oil and water, which are the carriers of most stains. Even with this protection, you still need to clean your upholstery and trim carpet often to keep it looking new. Further information on cleaning is available by calling 1-800-433-3296 (in Minnesota, 1-800-642-6 167).

Special Cleaning Problems

Greasy or Oily Stains Such as grease, oil, butter, margarine, shoe polish, coffee with cream, chewing gum, cosmetic creams, vegetable oils, wax crayon, tar and asphalt.

0 Carefully scrape off excess stain.

Follow the solvent-type instructions described earlier.

0 Shoe polish, wax crayon, tar and asphalt will stain if left on a vehicle seat fabric. They should be removed as soon as possible. Be careful, because the cleaner will dissolve them and may cause them to spread.

Non-Greasy Stains Such as catsup, coffee (black), egg, fruit, fruit juice, milk, soft drinks, wine, vomit, urine and blood.

Carefully scrape off excess stain, then sponge the soiled area with cool water.

0 If a stain remains, follow the foam-type instructions described earlier.

6-82

0 If an odor lingers after cleaning vomit or urine, treat the area with a

waterhaking soda solution: 1 teaspoon (5 ml) of baking soda to I cup (250 ml) of lukewarm water.

0 If needed, clean lightly with solvent-type cleaner.

Combination Stains Such as candy, ice cream, mayonnaise, chili sauce and unknown stains.

Carefully scrape off excess stain, then clean with cool water and allow to dry.

0 If a stain remains, clean it with solvent-type cleaner. Cleaning Vinyl Use warm water and a clean cloth.

Rub with a clean, damp cloth to remove dirt. You may have to do it more than once.

0 Things like tar, asphalt and shoe polish will stain if you don’t get them

off quickly. Use a clean cloth and a solvent-type vinyl cleaner.

Cleaning Leather Use a soft cloth with lukewarm water and a mild soap or saddle soap. For stubborn stains, use a mild solution of 10% isopropyl alcohol (rubbing alcohol) and 90% water. Never use oils, varnishes, solvent-based or abrasive cleaners, furniture polish or shoe polish on leather. Soiled leather should be cleaned immediately. If dirt is allowed to work into finish, it can harm the leather.

Cleaning the Top of the Instrument Panel Use only mild soap and water to clean the top surfaces of the instrument panel. Sprays containing silicones or waxes may cause annoying reflections in the windshield and even make it difficult to see through the windshield under certain conditions.

6-83

Care of Safety Belts Keep belts clean and dry.

Glass Glass should be cleaned often. GM Glass Cleaner (GM Part No. 1050427) or a liquid household glass cleaner will remove normal tobacco smoke and dust films. Don’t use abrasive cleaners on glass, because they may cause scratches. Avoid placing decals on the inside rear window, since they may have to be scraped off later. If abrasive cleaners are used on the inside of the rear window, an electric defogger element may be damaged. Any temporary license should not be attached across the defogger grid. Cleaning the Outside of the Windshield and Wiper Blades If the windshield is not clear after using the windshield washer, or if the wiper blade chatters when running, wax or other material may be on the blade or windshield. Clean the outside of the windshield with GM Windshield Cleaner, Bon-Ami Powder@ (GM Part No. 105001 1). The windshield is clean if beads do not form when you rinse it with water. Clean the blade by wiping vigorously with a cloth soaked in full strength windshield washer solvent. Then rinse the blade with water. Wiper blades should be checked on a regular basis and replaced when worn. Cleaning the Outside of Your Vehicle The paint finish on your vehicle provides beauty, depth of color, gloss retention and durability.

6-84

Washing Your Vehicle The best way to preserve your vehicle’s finish is to keep it often with lukewarm or cold water. Don’t wash your vehicle in the direct rays of the sun. Don’t use strong soaps or chemical detergents. Use liquid hand, dish or car washing (mild detergent) soaps. Don’t use cleaning agents that contain acid or abrasives. All cleaning agents should be flushed promptly and not allowed the surface, or they could stain. Dry the finish with a soft, clean chamois or a 100% cotton towel to avoid surface scratches and water spotting. High pressure vehicle washes may cause water to enter your vehicle.

it clean by washing

to dry on

Finish Care Occasional waxing or mild polishing of your vehicle may be necessary to remove residue from the paint finish. You can get GM approved cleaning products from your dealer. (See “Appearance Care and Materials” in the Index.) Your GM manufactured vehicle may have a “basecoatklearcoat” paint finish. The clearcoat gives more depth and gloss to the colored basecoat. Always use waxes and polishes that are non-abrasive and made for a basecoatlclearcoat paint finish.

I NOTICE:

Machine compounding or aggressive polishing on a basecoatklearcoat paint finish may dull the finish or leave swirl marks.

Protecting Exterior Bright Metal Parts Bright metal parts should be cleaned regularly to keep their luster. Washing with water is all that is usually needed. However, you may use GM Chrome Polish on chrome or stainless steel trim, if necessary. Use special care with aluminum trim. To avoid damaging protective trim, never use auto or chrome polish, steam or caustic soap to clean aluminum. A coating of wax, rubbed to high polish, is recommended for all bright metal parts.

6-85

Aluminum Wheels (If So Equipped) Your aluminum wheels have a protective coating similar to the painted surface of your vehicle. Don’t use strong soaps, chemicals, chrome polish, abrasive cleaners or abrasive cleaning brushes on them because you could damage this coating. After rinsing thoroughly, a wax may be applied.

NOTICE: If you have aluminum wheels, don’t use an automatic vehicle wash that has hard silicon carbide cleaning brushes. These brushes can take off the protective coating.

White Side wall Tires Your GM dealer has a GM White Sidewall Tire Cleaner. You can use a stiff brush with the cleaner. Weatherstrips Silicone grease on weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone grease with a clean cloth at least every six months. During very cold, damp weather more frequent application may be required. (See “Recommended Fluids & Lubricants” in the Index.) Sheet Metal Damage If your vehicle is damaged and requires sheet metal repair or replacement, make sure the body repair shop applies anti-corrosion material to the parts repaired or replaced to restore corrosion protection. Foreign Material Calcium chloride and other salts, ice melting agents, road oil and tar, tree sap, bird droppings, chemicals from industrial chimneys, and other foreign matter can damage your vehicle’s finish if they remain on painted surfaces. Use cleaners that are marked safe for painted surfaces to remove foreign matter. Finish Damage Any stone chips, fractures or deep scratches in the finish should be repaired right away. Bare metal will corrode quickly and may develop into a major repair expense. Minor chips and scratches can be repaired with touch-up materials available from your dealer or other service outlets. Larger areas of finish damage can be corrected in your dealer’s body and paint shop.

6-86

Underbody Maintenance Chemicals used for ice and snow removal and dust control can collect on the underbody. If these are not removed, accelerated corrosion (rust) can occur on the underbody parts such as fuel lines, frame, floor pan, and exhaust system even though they have corrosion protection. At least every spring, tlush these materials from the underbody with plain water. Clean any areas where mud and other debris can collect. Dirt packed in closed areas of the frame should be loosened before being flushed. Your dealer or an underbody vehicle washing system can do this for you. Chemical Paint Spotting Some weather and atmospheric conditions can create a chemical fallout. Airborne pollutants can fall upon and attack painted surfaces on your vehicle. This damage can take two forms: blotchy, ringlet-shaped discolorations, and small irregular dark spots etched into the paint surface. Although no defect in the paint job causes this, GM will repair, at no charge to the owner, the surfaces of new vehicles damaged by this fallout condition within 12 months or 12,000 miles (20 000 km) of purchase, whichever comes first. This applies only to materials manufactured and sold by General Motors. Bodies, body conversions or equipment not made or sold by General Motors are not covered. Appearance Care Materials Chart PART NO. 1050172

USAGE Tar and Road Oil Removes old Remover

16 oz. (0.473L)

PRODUCT

SIZE

I050 173

16 oz. (0.473L)

1050174

I6 oz. (0.473L)

1050214

32 oz. (0.946L)

Chrome Cleaner and Polish

White Sidewall Tire Cleaner Vinyl Leather Cleaner

1050244

16 oz. (0.473L)

Fabric Cleaner

6-87

waxes, polishes, tar and road oil Removes rust and corrosion on chrome and stainless steel Cleans white and black tires Spot and stain removal on leather or vinyl Spot and stain removal on cloth and fabric

PART NO. I050427

SIZE

23 oz. (0.680L)

PRODUCT Glass Cleaner

1050429

6 lbs. (2.72 kg)

Multi-Purpose Powder Cleaner

I050729

8 oz. (0.237L)

Vinyl Top Cleaner

1051055 1051398

16 02. (0.473L) 8 oz. (0.237L)

Preservatone Spot Lifter

1052870

16 oz. (0.473L)

105020 1

16 oz. (0.473L)

Wash-Wax (conc.) Magic Mirror Cleaner-Polish

tires

USAGE Glass cleaning and spot cleaning on vinyls Cleans vinyl and cloth on door trim, seats, and carpet-also and mats. Cleaning of vinyl tops Vinyl top dressing Spot and stain removal on cloth and fabric Exterior wash

Exterior cleaner and polish

Vehicle Identification Number (VIN)

This is the legal identifier for your vehicle. It appears on a plate in the front corner of the instrument panel, on the driver’s side. You can see it if you look through the windshield from outside your vehicle. The VIN also appears on the Vehicle Certification and Service Parts labels and the certificates of title and registration.

6-88

Engine Identification The eighth character in your VIN is the engine code. This code will help 'ou identify your engine, specifications, and replacement parts.

4- '

6-89

Service Parts 1dent;fkation Label You’ll find this label on the inside of the glove box.

VEHICLE < M)ooooMN)~ooooo

IDENTIFICATION NUMBER

WHEELBASE

Service Ports identification

6BJ 62L 62U 67D 671 679 7BJ BHJ 9HJ c

. DO NOT REMOVE OW00 E6E E92 FLT GU1 JM7

ARL ~ 0 2 ~ 6 5 ~ 6 y K19 K64

%oooo B ~ A B9K C60 018 D35 E52

LC3 MX1 M31 NA5 NE1 QMXVK3 Vc2 VY1 VY4 V73

J- MODELDESIGNATION

OPTIONCONTENT

‘f19

PAINTTECHNOLOGY

EXTERIOR COLORS

ORDER

NUMBER

It’s very helpful if you ever need to order parts. On this label is:

your VIN, the model designation, 0 paint information, and

a list of all production options and special equipment.

Be sure that this label is not removed from the vehicle. Add-on Electrical Equipment

NOTICE: Don’t add anything electrical to your vehicle unless you check with your dealer first. Some electrical equipment can damage your vehicle and the damage wouldn’t be covered by your warranty. Some add-on electrical equipment can keep other components from working as they should.

6-90

Specification Charts Replacement Parts Replacement part numbers listed in this section are based on the latest information available at the time of printing, and are subject to change. If a part listed in this manual is not the same as the part used in your vehicle when it was built, or if you have any questions, please contact your GM truck dealer. Engine Identification - Gas Engines Engine Type VIN Code Fuel System Produced By Emissions

4.3L V6 TBI? U.S.

5.0L V8 TB I?

U.S., CAN.

LD*/HD**

LD

"Light Duty Emissions with 8500 GVWR and below or: **Heavy Duty Emissions with 8501 GVWR and above ?Throttle Body Injection Engine Identification - Gas Engines (cont.) Engine Type VIN Code Fuel System Produced By Emissions

U.S., CAN. LD4:/HD**

5.7L V8

TB I?

*Light Duty Emissions with 8500 GVWR and below or: *:kHeavy Duty Emissions with 8501 GVWR and above ?Throttle Body Injection

6-91

6.5L V8

Engine ldenfificafion - Diesel Engines Engine Type VIN Code Fuel System Produced By Emissions Wheel Nut Torque

Diesel U.S. LD

6.5L V8

us. LD

Turbo Diesel

6.5L V8

Turbo Diesel

U.S. HD

MODEL

C 1500 K 1500 & C-K 2500 C-K 2500 (w/C6P) C-K 3500-Single Rear Wheels C3500-Dual Rear Wheels C3500 HD-Front C3500 HD-Rear Cooling System Capacity

DESCRIPTION 5 bolts (I41nm) 6 bolts (14mm) 8 bolts ( I4mm) 8 bolts (14mm)

8 bolts (14mm) 5 bolts (5/8 in.) 10 bolts (5/8 in.)

TORQUE

120 ft. Ibs. (160 Nom) 120 ft. lbs. ( 160 Nom) 120 ft. lbs. (160 Nom) 120 ft. lbs. (1 60 Nom)

140 ft. Ibs. (190 Nom) 175 ft. lbs. (240 Nom) 175 ft. Ibs. (240 Nom)

ENGINE

VIN QTY Without A/C*

QTY With AlC*

4.3L 5 .OL 5.7L

5.7L w/3500

HD 6.5L 6.5L 6.5L 7.4L

7.4L w/3500

HD

10.9 Quarts (10.3 Liters) 10.9 Quarts (10.3 Liters) 17.5 Quarts (16.5 Liters) 18 Quarts (17 Liters) 17.5 Quarts (16.5 Liters) 18 Quarts (17 Liters)

K 26.5 Quarts (25 Liters)

27 Quarts (25.5 Liters)

25 Quarts (23.5 Liters) 25 Quarts (23.5 Liters) 26.5 Quarts (25 Liters) 23 Quarts (22 Liters) 26.5 Quarts (25 Liters)

25 Quarts (23.5 Liters) 25 Quarts (23.5 Liters) 26.5 Quarts (25 Liters) 25 Quarts (23.5 Liters) 28.5 Quarts (27 Liters)

After refill, the level MUST be checked as outlined under “Engine Cooling System” in Section 5. *All quantities are approximate.

6-92

Crankcase Capacity ENGINE

VIN QTY Without Filter*

4.3L 5 .OL 5.7L** 6.5L 6.5L 6.5L 7 . a * *

P t st H-

4 Quarts (3.8 Liters) 4 Quarts (3.8 Liters)

4 Quarts (3.8 Liters) 6 Quarts (5.7 Liters)

QTY With Filter* 4.5 Quarts (4.3 Liters) 5 Quarts (4.8 Liters) 5 Quarts (4.8 Liters) 7 Quarts (6.5 Liters) 7 Quarts (6.5 Liters) 7 Quarts (6.5 Liters) 7 Quarts (6.5 Liters)

After refill, the level MUST be checked as outlined under “Engine Oil And Filter Recommendations’’ in Section 5. *All quantities are approximate. **Add one additional quart for C3500 HD Models. ?Oil filter should be changed at EVERY oil change.

Fuel Tank Capacity TYPE GasolineDiesel

with Short Bed with Long Bed

Crew Cab Standard

Chassis-Cab Models

Standard (Side Tank) Optional (Rear Tank)

3500 HD Models

Standard (Side Tank) Optional (Rear Tank)

QUANTITY

26 Gallons (98 Liters) 34 Gallons (128 Liters)

34 Gallons (128 Liters)

23 Gallons (87 Liters) 3 1 Gallons (1 17 Liters)

23 Gallons (87 Liters) 3 1 Gallons (1 17 Liters)

All quantities are for a completely dry tank and are approximate.

6-93

5.OL

4.3L PF52

Service Replacement Part and Filter Recommendations - Gas Engines Engine VIN Oil Filter Air Cleaner Filter PCV Valve Spark Plugs* Fuel Filter Radiator Cap

PF1218T A348C cv774c .CR43TS GF48 1 RC36

A178CW. CV789C .CR43TS GF48 1 RC36

PF1218t A348C cv774c .CR43TS GF48 1 RC36

5.7L

“four Wheel Drive Vehicle -use a PF52 oil filter *Use AC copper-cored resister type spark plugs

Service Replacement Part and Filter Recommendations - Diesel Engines Engine VIN Oil Filter Air Cleaner Fuel Filter Surge Tank Cap

PF1218 A917C TP 1006 RC33

PF1218 A9 17C TP 1006 RC33

6.5L

6.5L

7.4L

PF1218 A348C cv774c .CR43TS GF48 1 RC36

6.5L F*

PF1218 A917C TP 1006 RC33

“Heavy Duty Emission Engine Air Conditioning Refrigerants Not all air conditioning refrigerants are the same. If the air conditioning system in your vehicle needs refrigerant, be sure the proper refrigerant is used. If you’re not sure, ask your GM dealer. For additional information, see your “Warranty and Owner Assistance Information” booklet. Air Conditioning Refrigerant Capacity

TYPE

Refrigerant R 134A

QTY

2.25 lbs. (1.020 kg)

6-94

Fuse Block

FUSE LEGEND

I 25 AMP I CLEAR I 30 AMP I GREEN

I GAGES I TURN/BU

I PCM1'GN

lNJA

WIPER

DRL W l

STOPlHAZ

6-95

Fuses and Circuit Breakers NAME

CIRCUITS PROTECTED

Gages

Turn-B/U EMC/Ign

Ign. A Brake AC/Htr Ctsy

Park LP

P. Lps

Stop/Haz. Wiper Radio Acc/Ign. Acc/Batt.

Crank 4WD DRL

Cruise Control, 4 WD Display Illum. Rear Window Defogger Timer, Aux. Batt. Relay Feed, Safety Belt Buzzer Timer, Cluster Ign. Feed Back-up Lamps, Turn Signals T.C.C., Air Diverter, E.S.C., E.G.R., E.C.M. Ign., R.W.A.L. Brake Switch Throttle Body Injectors R.W.A.L., Cluster-Speedo H.V.A.C. 4WD, Aux. Batt. Relay Dome Lamp, Cargo Lamp, Ctsy, and Glove Box Lps. (TR-R), Radio (Memory-Clock) Horn Relay, Horn Feed, Cigar Lighter, Park Lamps C49 SW Illum., Headlamp “On” Warning, Radio Illum., H.V.A.C. Illum. Haz. Flasher, Seat Belt Buzzer, Stop Lmps., R.W.A.L. Memory Windshield Wiper, Washer Radio Feed Pwr. Windows Door Locks, Rear Window Defogger Crank, Discreet Four Wheel Drive Daytime Running Lights

FUSE

CIRCUIT BREAKER

20 Amp

15 Amp 10 Amp

10 Amp 15 Amp 25 Amp 20 Amp

20 Amp

5 Amp

15 Amp 25 Amp 10 Amp

5 Amp 25 Amp 15 Amp

30 Amp 30 Amp

*An inline fuse is used for the underhood lamp Do not use fuses of higher amperage than those recommended above.

6-96

Lamp and Bulb Data LAMP OR BULB TRADE

NO.

HEADLAMPS 2 Headlamp System Halogen (Opt.) 4 Headlamp System (Composite)

6052

H6054 6052

9005

LAMP OR BULB EXTERIOR Fog Lamp Front Marker Lamp Front Park and Turn Lamp Rear Parking Lamp Rear Stop and Turn Lamp Backup Lamp Backup Lamp Rear Park, Stop, and Turn Lamp’” Fender Clearance Lamp Roof Marker Lamp Cargo LampICHMSL License Plate Lamp Underhood Lamp Reel Lamp

*Chassis Cab Only LAMP OR BULB INTERIOR Dome Lamps Reading Lamps Roof Console Lamps” Courtesy Lamp

POWER

RATING AT 12.8V, WATTS

55/65

35/65 55/65

65

TRADE NO.

QTY

H3 194

2357NA

3057 3057 3156 1156 1157 194 194 92 1 194 232 232

TRADE NO.

21 1-2 21 1-2 I68 I003

6-97

Heater or A/C Control Lamp Four Wheel Drive Indicator rour Wheel Drive Shift Lever Instrument Panel Compartment Lamp Ashtray Lamp Sunshade Vanity Mirror

"Crew Cab Only LAMP OR BULB INSTRUMENT PANEL Transmission Indicator (PRNDL) Daytime Running Lights Indicatory Charging System Indicator Lamp Instrument Cluster Illumination --Gage Cluster Instrument Cluster Illumination -Tachometer Cluster Headlamp Beam Indicator Directional Signal Indicator Brake Warning Indicator Safety Belt Warning Check Gages Indicator Malfunction Indicator ("Service Engine Soon") Lamp Upshift Indicator Glow Plugs Lamp*:$: Low Coolant Water in Fuel Lamp*'$ Service Throttle Soon Lamp*"

194 161 194 194 I94 74

TRADE NO.

161 74 74 I94

I94

74 74 74 74 74 74

74 74 74 74 74

6-98

Scheduled Maintenance Services

Section

for your General Motors

This section covers the maintenance required vehicle . Your vehicle needs these services to retain it’s safety. dependability. and emission control performance . A Word About Maintenance .................................. Your Vehicle and the Environment ............................. Recording Maintenance Services ............................... Scheduled Maintenance Services ...............................

7-3 7-3 7-3 7-4 Selecting Your Vehicle’s Maintenance Services . . . . . . . . . . . . . . . . . 7-4 Gasoline Engines with Light Duty Emissions -

7-6 7-8

Diesel Engines .

Gasoline Engines with Heavy Duty Emissions -

MaintenanceScheduleI ................................ MaintenanceScheduleII ................................ Maintenance Schedule I ............................... Maintenance Schedule I1 ............................. Maintenance Schedule I ............................... Maintenance Schedule 11 ............................... Owner Checks and Services .................................. Recommended Fluids & Lubricants ........................... Maintenance Record ....................................... Service Station Checks .... ., ................................

7-14 7-16 Explanation of Scheduled Maintenance Services . . . . . . . . . . . . . . . 7-18 7-22 7-25 7-27 7-28

7-10 7-12

Have you purchased the GM Protection Plan? The Plan supplements the new vehicle warranties . See your GM dealer for details .

7-1

A Word About Maintenance We at General Motors want to help you keep your vehicle in good working condition. But we don’t know exactly how you’ll drive it. You may drive very short distances only a few times a week. Or you may drive long distances all the time in very hot, dusty weather. You may use your vehicle in making deliveries. Or you may drive it to work, to do errands, or in many other ways. Because of all the different ways people use their GM vehicles, maintenance needs vary. You may even need more frequent checks and replacements than you will find in the schedules in this section. So please read this section and note how you drive. If you have any questions on how to keep your vehicle in good condition? see your GM dealer, the place many GM owners choose to have their maintenance work done. Your dealer can be relied upon to use the proper parts and practices. Your Vehicle and the Environment Proper vehicle maintenance not only helps keep your vehicle in good working condition? but also helps the environment. All recommended maintenance procedures are important. Improper vehicle maintenance or the removal of important components can significantly affect the quality of the air we breathe. Improper fluid levels or even the wrong tire inflation can increase the level of emissions from your vehicle. To help protect our environment, and to help keep your vehicle in good condition, please maintain your vehicle properly. Recording Maintenance Services The Maintenance Record near the end of this section provides a place for you to record the maintenance performed on your vehicle. Whenever any maintenance is performed, be sure to write it down in the Maintenance Record. This will help you determine when your next maintenance should be done. In addition, it is a good idea to keep your maintenance receipts. They may be needed to qualify your vehicle warranty repairs.

7-2

Tf you are skilled enough to do some work on your vehicle, you will probably want to get the service information GM publishes. For information on how to obtain various service publications for your vehicle, see “Service Publications” in the Index. You will find a list of publications and an order form in the back of the book. Scheduled Maintenance Services This part tells you the maintenance services that you should have done and the times you should schedule them. Your GM dealer knows your vehicle best and wants you to be happy with it. If you go to your dealer for your service needs, you’ll know that GM-trained and supported service people will perform the work using genuine GM parts. These schedules are for vehicles that:

0 carry passengers and cargo within the recommended limits. You will find these limits on your vehicle’s Certification Label. See “Loading Your Vehicle’’ in the Index. are driven on regular road surfaces, and within legal driving limits, as described in Section 4 “Your Driving and the Road.”

0 are driven off-road in the recommended manner. See “Off Road

Driving With Your Four-wheel Drive Vehicle” in the Index.

0 use the recommended fuel. See “Fuel” in the Index. Selecting the Proper Maintenance Services To find the proper maintenance schedule for your vehicle, you must know two things. What engine your vehicle has, and how you use your vehicle. Your engine type will tell you which chart to use, and your driving conditions will tell you which schedule to use. ’The charts are found later in this section.

Selecting the Proper Maintenance Chart Your engine type (Gasoline or Diesel) and its emissions classification (Light Duty or Heavy Duty Emissions) will tell you which maintenance chart to use. Find your Vehicle Identification Number (VIN), and look at the eighth character to see what your engine code is. Then use the following Engine Emissions Classifications tables to find your emissions classification. Your VIN is on the plate on the top left corner of your instrument panel, the Certification Label and on the Service Parts Identification Label. See “Vehicle Identification Number’’ in the Tndex. If your engine has more than one emissions classification, look at your Certification Label to see what your Gross Vehicle Weight Rating (GVWR) is. See “Loading Your Vehicle” in the Index.

7-3

Engine Emissions Classification - Gas Engines Engine Type VIN Fuel System Emissions

5.0L V8

TBIT LD

*Light Duty Emissions with 8500 GVWR and below or: :%*Heavy Duty Emissions with 8501 GVWR and above +Throttle Body Injection Engine Emissions Classification - Gas Engines (cont.) 7.4L Engine V8 Type VTN Fuel System Emissions

5.7L V8

LD*/HD*'k

TBTT

TBIY

LD*/HD**

*Light Duty Emissions with 8500 GVWR and below or: **Heavy Duty Emissions with 8501 GVWR and above ?Throttle Body Injection

Engine Emissions Classification - Diesel Engines Engine Type VIN Fuel System Emissions

6.5L V8

6.5L V8

Diesel LD

Turbo Diesel

LD

6.5L V8

HD

Turbo Diesel

7-4

Selecting the Proper Maintenance Schedule Here is how to tell which schedule to follow once you find the proper maintenance chart to use. MAINTENANCE SCHEDULE I Is any one of these true for your vehicle?

Most trips are less than 4 miles (6 kilometers.) Most trips are less than 10 miles ( 16 kilometers), and the outside temperatures are below freezing. The engine is at low speed most of the time (as in door-to-door delivery, stop-and-go traffic, or commercial use). You operate in dusty areas or off-road frequently. You tow a trailer.

If any one (or more) of these is true for your driving, follow Schedule I. Schedule I is shown by a plus sign (+) on the chart. MAINTENANCE SCHEDULE I1 Follow Schedule I1 ONLY if none of the above conditions are true. Schedule TI is shown by a dot ( 0 ) on the chart.

7-5

GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS - MAINTENANCE SCHEDULE ft

* An Emission Control Service ** See “Explanation of Scheduled Maintenance Services” in the Index $ The California Air Resources Board has determined that the failure to perform this

maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of vehicle useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded. t To determine the emissions classification of your engine, refer to “Selecting the Proper TO40 1 KO90 1

Maintenance Chart” in this section.

GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS - MAINTENANCE SCHEDULE 13. (continued)

If your driving conditions do NOT meet those specified in “Scheduled Maintenance Services” in this section, use Maintenance Schedule II (e).

-HE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE )ONE AFTER 60,000 MILES AT THE SAME INTERVALS. ’0402R0902

7-7

GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS - MAINTENANCE SCHEDULE 113.

* An Emission Control Service ** See “Explanation of Scheduled Maintenance Services” in the Index. $ The California Air Resources Board has determined that the failure

to perform this

maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of vehicle useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded. t To determine the emissions classification of your engine, refer to “Selecting the Proper T0403/T0903

Maintenance Chart” in this section.

7-8

GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS - MAINTENANCE SCHEDULE I@ (continued) If your driving conditions do NOT meet those specified in “Scheduled Maintenance Services” in this section, use Maintenance Schedule II (e),

THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE DONE AFTER 60,000 MILES AT THE SAME INTERVALS. T0403alT0903a

7-9

GA! -/I

;OLINE ENGINES WITH HEAVY DUTY EMISSIONS IAINTENANCE SCHEDULE If your driving conditions meet those specified in “Scheduled Maintenance Services’’ in this section (or see Index), use Maintenance Schedule I (t).

Item No.

10 11 12 13

14 15 16

17

18 19 20 21

23 24 25 n Emission Control Service

* I ** ee “Explanation of Scheduled Maintenance Services” in the Index. < A I Noise Emission Control Service pplicable only to vehicles sold in the United States 2 determine the emissions classification of your engine, refer to “Selecting the Proper t 1 F laintenance Chart” in this section. TO404

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THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE DONE AFTER 60,000 MILES AT THE SAME INTERVALS. TO405

7-11

GASOLINE ENGINES WITH HEAVY DUTY EMISSIONS - MAINTENANCE SCHEDULE Iff

* An Emission Control Service ** See “Explanation of Scheduled Maintenance Services” in the Index. A A Noise Emission Control Service V Applicable only to vehicles sold in the United States t To determine the emissions classification of your engine, refer to “Selecting the Proper TO406

Maintenance Chart” in this section.

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GASOLINE ENGINES WITH HEAVY DUTY EMISSIONS - MAINTENANCE SCHEDULE lh- (continued)

THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (1 00 000 km) ARE TO BE DONE AFTER 60,000 MILES AT THE SAME INTERVALS. TO407

7-13

DIESEL ENGINES - MAINTENANCE SCHEDULE yf

System

Intake

Fan

20 Air InspectionAB 21 Thermostatically Controlled Engine

CheckAW-Every

Cooling 12 Months or

22 Exhaust Pressure Regulator Valve

Inspection*

Wheel and

Rotation**

Axle

Drive

Tire

23 24 25 Brake Systems Inspection** A Change filter every 15,000 miles (24 000 km), except when operating in dusty

conditions. Dusty conditions may require more frequent filter replacement. Extreme dust and dirt operating conditions (off-road), may require the air filter often as every 300 miles (483 km) and replaced as necessary.

to be checked as

* An Emission Control Service ** See “Explanation of Scheduled Maintenance Services” in this section. A A Noise Emission Control Service 1 Applicable only to vehicles sold in the United States t This maintenance schedule applies to all diesel engines available. T0408/T0908

7-14

DIESEL ENGINES - MAINTENANCE SCHEDULE (continued) If your driving conditions do NOT meet those specified in “Scheduled Maintenance Services”’ in this section, use Maintenance Schedule II (e).

THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE DONE AFTER 60,000 MILES AT THE SAME INTERVALS. T0409R0909

7 - 15

DIESEL ENGINES - MAINTENANCE SCHEDULE I@

* An Emission Control Service ** See “Explanation of Scheduled Maintenance Services” in this section. A A Noise Emission Control Service t This maintenance scheduled applies to all diesel engines available. TO41 OR091 0

Applicable only to vehicles sold in the United States.

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DIESEL ENGINES - MAINTENANCE SCHEDULE lh (continued) If your driving conditions do NOT meet those specified in “Scheduled Maintenance Services” in this section, use Maintenance Schedule II (a).

THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE DONE AFTER 60,000 MILES AT THE SAME INTERVALS. TO41 1Tr0911

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Explanation Of Scheduled Mainienance Services Below are explanations of the services listed in the maintenance charts. The proper fluids and lubricants to use are listed in this section. Make sure whoever services your vehicle uses these. All parts should be replaced and all necessary repairs done before you or anyone else drives the vehicle. 1. ENGINE OIL AND OIL FILTER CHANGE“‘ - ALWAYS USE

SJ3 ENERGY CONSERVING I1 (GASOLINE ENGINE) OR CF-4/SH (DIESEL ENGINE) QUALITY OILS OF THE PROPER VISCOSITY. To determine the preferred viscosity oil for your vehicle’s engine (e.g. SAE 5W-30 or 10W-30), see “Engine Oil” in the Index.

2. CHASSIS LUBRICATION - Lubricate the front suspension, king

pin bushings, steering linkage, transmission, and transfer case shift linkage, parking brake cable guides, rear driveline center splines and front axle propshaft splines, brake pedal springs, and clutch pedal springs at the intervals specified. If you have a 3500 HD, lubricate the king pins and king pin bushings, every 1,500 miles (2500 km) for Maintenance Schedule I, or every 3,000 (5000 km) for Maintenance Schedule 11. Ball joints and king pin bushings should not be lubricated unless their temperature is 10” F (-12”C), or higher. When the weather is cold, let them warm up before lubrication or they could be damaged. Also, be sure to check all the vehicle fluid levels at this time.

3. CLUTCH FORK BALL STUD LUBRICATION (5-SPEED

MANUAL TRANSMISSION WITH DEEP LOW ) - Lubricate the clutch fork ball stud through the fitting on the clutch housing. Lubricant must be added “sparingly” to the fitting, as only .0066 lb. (.003 kg) is required to lubricate the ball stud surface. Do not add lubricant more often than the intervals in the Maintenance Charts. Too much lubricant will damage the clutch assembly.

4. COOLING SYSTEM SERVICE”’? - Drain, flush and refill system

with new coolant. See “Engine Coolant” in the Index for the proper coolant and mixture to use in your vehicle. Also inspect the hoses and replace them if they are cracked, swollen, or deteriorated. Tighten all hose clamps (except constant tension clamps). Remove debris and clean the outside of the radiator and air conditioning condenser. Wash the radiator neck. To ensure proper operation, pressure test. the radiator and cap. * An Emission Control Service ?A fluid loss in these systems may indicate a problem. Have them inspected and repaired at once.

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5. AIR CLEANER FILTER REPLACEMENT* - Replace at every 30,000 miles (50 000 km) or more often under dusty conditions. Ask your dealer for the proper replacement intervals for your driving conditions.

6. FRONT WHEEL BEARING REPACK (2-WHEEL DRIVE

ONLY) - Clean and repack the front wheel bearings at each brake relining, or at the specified interval, whichever comes first.

7. TRANSMISSION SERVICE’/-

Automatic Transmission - Change the transmission fluid and filter every 15,000 miles (25 000 km) for vehicles under 8,600 GVWR or every 12,000 miles (20 000 km) for vehicles over 8,600 GVWR if the vehicle is mainly driven under one or more of these conditions:

In heavy city traffic.

0 Where the outside temperature regularly reaches 90°F (32°C) or

higher.

0 In hilly or mountainous terrain.

Frequent trailer pulling. Uses such as taxi, police, delivery or other commercial service.

If the vehicle is not used mainly under any of these conditions, change the fluid and filter every 30,000 miles (50 000 km) for vehicles under 8,600 GVWR or every 24,000 miles (40 000 km) for vehicles over 8,600 GVWR see “Automatic Transmission Fluid” in the Index for more information. Manual Transmission - Transmission fluid does not require periodic changing.

8. CDRV SYSTEM INSPECTION* - Check the Crankcase

Depression Regulator Valve System for any worn, plugged or collapsed hoses. Have the system checked as described in the Service Manual. 9. FUEL FILTER REPLACEMENT*$ - Replace the fuel filter at the

specified interval or sooner if clogged. ?A fluid loss in these systems may indicate a problem. Have them inspected and repaired at once. :i: An Emission Control Service $The California Air Resources Board bas determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of the vehicle useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded.

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10.

11.

12.

13.

14.

15.

16.

17.

SPARK PLUG REPLACEMENT* - Replace spark plugs with the type listed in Section 6. See “Specification Charts” in the Index. SPARK PLUG WIRE INSPECTION - Clean wires and inspect for bums, cracks or other damage. Check the wire boot fit at the distributor and at the spark plugs. Replace wires as needed. -f‘A fluid loss in these systems may indicate a problem. Have them inspected and repaired at once. EGR SYSTEM INSPECTION* - Conduct EGR SYSTEM CHECK as described in the Service Manual. ELECTRONIC VACUUM REGULATOR VALVE (EVRV) INSPECTION* - Inspect filter for excessive contamination or plugging. If required, clean element with a solution of biodegradable soap and water, let dry and reinstall element. ENGINE TIMING CHECK AND DISTRIBUTOR CHECK (SOME MODELS)*$ - Adjust timing to underhood label specifications. Inspect the inside and outside of the distributor cap and rotor for cracks, carbon tracking and corrosion. Clean or replace as needed. FUEL TANK, CAP AND LINES INSPECTION*$ - Inspect the fuel tank, cap and lines for damage or leaks. Remove fuel cap, inspect gasket for an even filler neck imprint, and any damage. Replace parts as needed. THERMOSTATICALLY CONTROLLED AIR CLEANER INSPECTION*A - (If so equipped.) Inspect all hoses and ducts for proper hook-up. Be sure the valve works properly. SINGLE ENGINE ACCESSORY DRIVE (SERPENTINE) BELT INSPECTION* - Inspect belt. Look for cracks, fraying, wear, and proper tension. Adjust or replace as needed.

* An Emission Control Service ANoise Emission Control Service $The California Air Resources Board has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of the vehicle useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded.

7-20

18. EVAPORATIVE CONTROL SYSTEM (ECS) INSPECTION* -

Check all fuel and vapor lines and hoses for proper hookup, routing, and condition. Check that the purge valve works properly, if equipped. Replace as needed.

19. SHIELDS AND UNDERHOOD INSULATION

INSPECTIONAV - Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required.

20. AIR INTAKE SYSTEM INSPECTIONAV - Check the air intake system installation to see that gaskets are sealed properly and all hose connections, fasteners, and other components are tight. Also check to be sure that the air cleaner housing is properly seated, that the cover fits tightly, and the wing nuts are tight. Tighten connections and fasteners or replace damaged parts as required.

2 1. THERMOSTATICALLY CONTROLLED ENGINE COOLING FAN INSPECTIONAV - (If so equipped.) Inspect all hoses and ducts for proper hook-up. Be sure the valve works properly.

22. EXHAUST PRESSURE REGULATOR VALVE INSPECTION” - Check that the valve works properly. Correct any binding. Inspect hoses for cracks, chafing or decay. Replace parts as needed.

23. TIRE AND WHEEL ROTATION AND INSPECTION - For

proper wear and maximum tire life, rotate tires at the first 6,000 miles ( 10 000 kilometers) for Schedule I (+) or 7,500 miles (1 2 500 kilometers) for Schedule IT ( 0 ) and then every 15,000 miles (25 000 kilometers) thereafter. Follow the instructions and patterns shown in Section 6. Check tires for uneven wear or damage. If irregular or premature wear is apparent, check wheel alignment. Also, check or damaged wheels. See “Tires” in the Index for more information. For dual wheels, whenever the vehicle, wheels, or fasteners are new, have the wheel fastener torque set at the first 100, 1,000 and 6,000 miles (1 60, 1600 and 10 000 km). Block the tires opposite those being removed to keep the vehicle from rolling.

‘i: An Emission Control Service ANoise Emission Control Service VApplicable only to vehicles sold in the United States

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24. DRIVE AXLE SERVICE? - Check readfront axle fluid level and

add as needed. Check constant velocity joints and axle seals for leaking.

Locking differential - Drain fluid at first oil change and refill. Check fluid level and add as needed at subsequent oil changes. In dusty areas, or trailer towing applications drain fluid at every 15,000 miles (24 135 kilometers) and refill. Standard differential - Check fluid level and add as needed at every oil change. In dusty areas, or trailer towing applications, drain fluid every 15,000 miles (24 I35 kilometers) and refill. More frequent lubrication may be required on heavy-duty or off-road use. 3500 HD Models - 3500 HD Models with applications requiring extreme overload/trdiler tow conditions and high speed conditions (above 45 mph (72 k d h ) ) for extended periods of time must change drive axle fluid every 3,000 miles (4828 kilometers) or 3 months, whichever comes first, OR must use 75W-140 synthetic fluid meeting GM specifications. See “Recommended Fluids and Lubricants” at the end of this section for the proper fluid to use.

25. BRAKE SYSTEM INSPECTION-f - When the engine oil is

changed, inspect the lines and hoses for proper hookup, binding, leaks, cracks, chafing, etc. Check the parking brake adjust, and the fluid level in the master cylinder. A low fluid level can indicate worn disc brake pads which may need to be serviced. When the wheels are removed for rotation, inspect disc brake pads for wear and rotors for surfxe condition. Also inspect drum brake linings for wear and cracks. Inspect other brake parts, including drums, wheel cylinders, parking brake, etc., at the same time. Remove any rust or dirt from the wheel and mounting surfaces before mounting the wheel. Inspect brakes more often if driving habits or conditions result in frequent braking.

?A fluid loss in these systems may indicate a problem. Have them inspected and repaired at once.

7-22

Owner Checks and Services Listed below are owner checks and services which should be made at the time period specified to help ensure proper safety, emission performance, and dependability of your vehicle. Be sure any necessary repairs are completed at once. Whenever any fluids or lubricants are added to your vehicle, make sure they are the proper ones, as shown in this Section.

At Least Once a Month Tire inflation pressure check - Check the tires for proper inflation. If they are low, inflate them to the level specified on the Certification/Tire label. See “Loading Your Vehicle” or “Inflation-Tire Pressure” in the Index.

At Least Once a Year Key lock cylinder lubrication - Lubricate key lock cylinders with engine oil. See the “Recommended Fluid and Lubricants” chart in this section. Transmission neutral or clutch start switch operation -

1. Before you start, be sure you have enough room around the vehicle. 2. Firmly apply both the manual parking brake and the regular brake. See “Brakes” and “Parking Brake” in the Index. Do not use the accelerator pedal.

3. Be ready to turn off the engine immediately if it starts. 4. On automatic transmission vehicles, try to start the engine in each gear.

The starter should work only in “ P ’ (Park) or “N” (Neutral).

On manual transmission vehicles, put the shift lever in “N” (Neutral), push the clutch down halfway, and try to start the engine. The starter should work only when the clutch is pushed down all the way to the floor. Steering column lock operation - While parked, try to turn the key to LOCK in each gear shift position. With an automatic transmission, the key should turn to LOCK only when the gear shift is in “P” (Park).

7-23

On vehicles with a key release lever, try to turn the key to LOCK without pressing the lever. The key should turn to LOCK only with the key lever depressed. On all vehicles, the key should come out only in LOCK. Parking brake and transmission “P” (PARK) mechanism operation -

Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the manual parking brake.

To check the parking brake: With the engine running and the transmission in “N” (Neutral), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only.

0 To check the “ P ’ (Park) mechanism’s holding ability: Apply the regular

brake and shift to “ P ’ (Park). Release the manual parking brake, then slowly release the regular brake.

Lap and Shoulder Belts Condition and Operation - Inspect belt system, including webbing, buckles, latch plates, retractors, guide loops and anchors. Have a belt assembly replaced if the webbing has been cut or otherwise damaged. Body Lubrication Service - Lubricate all body door hinges with engine oil. Also lubricate the tailgate, tailgate handle pivot points, and tailgate mounted spare tire carrier (if equipped}. Lubricate the body hood, fuel door and rear compartment hinges, latches and locks including interior glove box and console doors, and any folding seat hardware. Lubricate the hood safety lever pivot and prop rod pivot. More frequent lubrication may be required when exposed to a corrosive environment. Periodic Maintenance Inspections - Listed below are inspections and services which should be performed at least twice a year (for instance each spring or fall). You should let your GM dealer’s service department or other qualified service center do these jobs. Make sure any necessary repairs are completed at once.

7-24

Steering and Suspension Inspection? - Inspect front and rear suspension and steering system for damaged, loose or missing parts, signs of wear or lack of lubrication. Inspect power steering lines and hoses for proper hook-up, binding, leaks, cracks, chafing, etc. Lubricate the steering linkage. Accelerator Control System - On gasoline engines, lubricate the pivot at the TBI throttle lever stud with engine oil. Do not oil any accelerator or cruise control cables. Replace any cables that have high effort or excessive wear. Exhaust System Inspection - Inspect the complete system including the three-way catalytic converter. Inspect the body near the exhaust system. Look for broken, damaged, missing or out-of-position parts, as well as, open seams, holes, loose connections or other conditions which could cause a heat buildup in the floor pan or could let exhaust fumes seep into the passenger compartments. Drive Axle Service? - Check readfront axle fluid level and add as needed. Check constant velocity joints and axle seals for leaking. I-- oil change intervals, check front axle and transfer case and add lubricant when necessary. Oil the control lever pivot point and all exposed control linkage. Check vent hose at transfer case for kinks and proper installation. More frequent lubrication may be required on heavy-duty or off-road use.

lsfer Case (Four-wheel Drive) Inspection? - Every 12 months or at

?'A fluid loss in these systems may indicate a problem. Have them inspected and repaired at once.

7-25

Recommended Fluids & Lubricants NOTE: Fluids and lubricants identified below by name, part number or specification may be obtained from your GM Dealer.

USAGE

Engine Oil - Gasoline Engines

Engine Oil - Diesel Engines

Engine Coolant

Hydraulic Clutch System

Hydraulic Brake Systems

Parking Brake Cables

Power Steering System

Automatic Transmission

FLUIDLUBRICANT

API service SH or SG Energy Conserving I1 oils of the recommended viscosity. The “SH” designation may be shown alone or in combination with others, such as “SH/CD,” “SH, SG, CD,”“SG/CD,” etc. To determine the preferred viscosity for your vehicle’s engine, see “Engine Oil” in the Index. API service C F 4 S H . The “CF4SH” designation may be shown alone or in combination with others, such as “CF-4/SG,” “CE/SH” or “CE/SG,” etc. The designation may also be listed in reverse order, such as “SH/CF-4.” To determine the preferred viscosity for your vehicle’s engine, see “Engine Oil” in the Index. Mixture of water and a good quality ethylene glycol base antifreeze conforming to “GM Specification 6038-M” (GM Part No. 1052753)’ or approved recycled coolant conforming to “GM Specification 603%”’ with a complete coolant flush and refill. Hydraulic Clutch Fluid (GM Part No. I2345347 or equivalent). Delco Supreme 11 Part No. 1052535 or equivalent DOT-3 brake fluid). Chassis Lubricant (GM Part No. I2346003 or equivalent) or lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB. GM Power Steering Fluid (GM Part No. 1050017 or equivalent) conforming to “GM Specification 99850 10.” D E X R O N ~ 111 or D E X R O N ~ IIE Automatic Transmission Fluid.

brake fluid (GM

7-26

USAGE

FLUIDLUBRICANT

Manual Transmission: a. 5-Speed with Low Gear (FWO MT8)

a. Castrol Syntorq or equivalent (GM Part No. 12345871 - 1 gal.) (GM Part NO. 12346074 - 1 st.).

b. $-Speed without Low Gear b. Synchromesh Transmission Fluid (RPO MG5) (GM Differential: a. Standard (Saginaw) Front and Rear Axle

equivalent).

Part No.

12345349

or

Column Shift, Transfer Case, Chassis Lubricant (GM Part No. Shift Lever, and Propeller Shaft

b. Locking

c. 3500 HD Models used under extreme conditions Transfer Case

Gas Line

Clutch Fork Ball Stud (5-Speed with Low Gear)

Hood Latch Assembly a. Pivots and spring anchor

b. Release Pawl

Front Wheel Bearings

a. Axle Lubricant (GM Part No. 1052271) or SAE-8OW-90 Gear Lubricant. b. Axle Lubricant (GM Part No. 1052271) or SAE-8OW-90 Gear Lubricant. c. Axle Lubricant SAE-75W-140 Synthetic Gear Lubricant. DEXRON~ 111 or DEXRON@ IIE Automatic Transmission fluid. Gas Line De-Icer (GM Part No. 105 15 16 or equivalent).

12346003 or equivalent) or lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB. Chassis Lubricant (GM Part No. 12346003 or equivalent) or lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB.

a. Engine Oil (GM Part No. 1050109 or equivalent). Chassis Lubricant (GM Part No. 12346003 or equivalent) or lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB. Wheel Bearing Lubricant (GM Part No. 12346003 or equivalent) or lubricant meeting requirements of NLGI Grade 2, Category GC or GC-LB.

7-27

USAGE

Propeller Shaft SplineNniversal Joint

FLUIDLUBRICANT

Chassis Lubricant (GM Part No. 12346003 or equivalent) or lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB.

No. 1050109 or

Automatic Transmission Shift Engine Oil (GM Part Linkage, Floor Shift Linkage, equivalent). Hood and Door Hinges, Body Door Hinge Pins, Tailgate Hinge and Linkage, Folding Seat, Fuel Door Hinge Key Lock Cylinders

Chassis Lubrication

Windshield Washer Solvent and Anti-Freeze Weatherstrip Squeaks

Weatherstrip Conditioning

Outer Tailgate Handle Pivot Points

Engine Oil (GM Part No. 1050109 or equivalent) or a synthetic light weight engine oil (SAE 5W-30). Chassis Lubricant (GM Part No. 12346003 or equivalent) or lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB. GM Optikleen washer solvent (GM Part No. 105 15 15 or equivalent). Spray-A-Squeek (GM Part No. 1052277). Dielectric Silicone Grease (GM Part No. 12345579 or equivalent). Multi-Purpose Lubricant (GM Part No. 12345 120 or equivalent).

7-28

Maintenance Record After each of the preceding Scheduled Maintenance Services is performed, record the date, odometer reading, services performed (list item numbers) and who performed the services in the appropriate column. In addition, retain copies of your receipts. It is suggested that receipts be kept with your Owner’s Manual.

TO001

7-29

Service Station Checks It is important for you or a service station attendant under-hood checks at each fuel fill.

to perform these

Check the engine oil level and add if necessary. Check the engine coolant level in the recovery bottle and add if necessary. Check the windshield washer fluid level and add if necessary.

See these items in the Index for information on how to check them.

7-30

Secondary Hood Release See Page 6-15.

, Battery

Your vehicle's Delco Freedom battery never needs to have water added. See Page 6-52.

Cooling System 3 Check and add coolant only at the coolant recovery tank (gasoline engine) or only at the coolant surge tank (diesel engine). The fluid level should be at the COLD mark. See Page 6-38.

Transmission Fluid See Page 6-30.

- Spare Tire Pressure See the Certificatisnflire label on the inside rear edge of the driver's door. See Page 6-71.

Fluid See Page 6-45.

engines, use 87 octane (or higher) unleaded gasoline only.

For diesel engines, use at least 1 D diesel fuel. For fuel tank capacity See Page 6-93.

Cold Tire /

Pressure See the Certificationflire label on the inside rear edge of the driver's door. See Page 6-65,6-71.

7-31

Notes

7-32

Customer Assistance Information

Section

Here you will find out how to contact GMC Truck if you need assistance. This section also tells you how to obtain service publications and how to report any safety defects. Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . 8-2 Customer Assistance for the Hearing or Speech Impaired (TDD) . . . , . 8-3 GM Participation in BBB AUTO LINE - Alternative Dispute Resolution

Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-3 Reporting Safety Defects To the United States Government . . . . . . . . . . 8-4 Reporting Safety Defects To the Canadian Government . . . . . . . . . . . . . 8-5 Reporting Safety Defects To General Motors . . . . . . . . . . . . . . . . . . . . . 8-5 Roadside Assistance . . . . . . . . . , . . . . , . , . . . . . . . . . . . . . . . . . . . . . . . . 8-6 Courtesy Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6 Service Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

8-1

Customer Satisfaction Procedure Your satisfaction and goodwill are important to your dealer and GMC Truck. Normally, any concern with the sales transaction or the operation of your vehicle will be resolved by your dealer’s Sales or Service Departments. Sometimes, however, despite the best intentions of all concerned, misunderstandings can occur. If your concern has not been resolved to your satisfaction, the following steps should be taken: STEP ONE - Discuss your concern with a member of dealership management. Normally, concerns can be quickly resolved at that level. If the matter has already been reviewed with the Sales, Service, or Parts Manager, contact the owner of the dealership or the General Manager. STEP TWO - If after contacting a member of dealership management, it appears your concern cannot be resolved by the dealership without further help, contact your GMC Truck Consumer Relations Manager by calling I -800-GMC-TRUCK Canada, contact GM of Canada Customer Assistance Center in Oshawa bl calling 1-800-263-3777 In Mexico, call (525) 254-3777. In Puerto Rico or U.S. Virgin Islands, cal 1-809-763-1315. In all American Export Sales in Canada by calling 1-905-644-41 12. For prompt assistance, please have the following information available to give the Customer Assistance Manager:

( 1 -8OO-462-8782, Customer Assistance prompt.) In

other overseas locations, contact GM North

(English) or 1-800-263-7854

(French).

0 Your name, address, home and business telephone number 0 Vehicle Identification Number (This is available from the vehicle

registration or title, or the plate at the left top of the instrument panel and visible through the windshield.) Dealership name and location

0 Vehicle delivery date and present mileage

Nature of concern

We encourage you to call the toll free number listed previously in order to give your inquiry prompt attention. However, if you wish to write GMC Truck, write to:

GMC Truck Customer Assistance 31 E. Judson Street 1607-04 Pontiac, MI 48342-2230

Refer to your Warranty and Owner Information booklet for addresses of Canadian and GM overseas offices. When contacting GMC Truck, please remember that your concern will likely be resolved in the dealership, using the dealership’s facilities,

8-2

equipment and personnel. That is why we suggest you follow Step One first if you have a concern, Customer Assistance for the Hearing or Speech Impaired (TDD) To assist customers who have hearing difficulties, GMC Truck has installed special TDD (Telecommunication Devices for the Deaf) equipment at its Customer Assistance Center. Any hearing or speech impaired customer who has access to a TDD or a conventional teletypewriter (TTY) can communicate with GMC Truck by dialing: In the United States, 1-800-GMC-TKTD 1-800-263-3830.)

(1-800-462-8583). (TDD users in Canada can dial

GM Participation in BBB AUTO LINE - Alternative Dispute Resolution Program * *This program may not be available in all states, depending on state law. Canadian owners refer to your Warranty and Owner Assistance Information booklet. General Motors reserves the right to change eligibility limitations and/or to discontinue its participation in this program. Both GMC Truck and your GMC Truck dealer are committed to making sure you are completely satisfied with your new vehicle. Our experience has shown if a situation arises where you feel your concern has not been adequately addressed, the Customer Satisfaction Procedure described earlier in this section is very successful. There may be instances where an impartial third-party can assist in arriving at a solution to a disagreement regarding vehicle repairs or interpretation of the New Vehicle Limited Warranty. To assist in resolving these disagreements GMC Truck voluntarily participates in BBB AUTO LINE. BBB AUTO LINE is an out-of-court program administered by the Better Business Bureau system to settle disputes between customers and automobile manufacturers. This program is available free of charge to customers who currently own or lease a GM vehicle. If you are not satisfied after following the Customer Satisfaction Procedure, you may contact the BBB using the toll-free telephone number, or write them at the following address:

BBB AUTO LINE Council of Better Business Bureaus 4200 Wilson Boulevard Suite 800 Arlington, VA 22203 Telephone: 1-800-955-5 100

8-3

To file a claim, you will be asked to provide your name and address, your vehicle identification number (VIN), and a statement of the nature of your complaint. Eligibility is limited by vehicle age and mileage, and other factors. We prefer you utilize the Customer Satisfaction Procedure before you resort to AUTO LINE, but you may contact the BBB at any time. The BBB will attempt to resolve the complaint by serving as an intermediary between you and GMC Truck. If this mediation is unsuccessful, an informal hearing will be scheduled where eligible customers may present their case to an impartial third-party arbitrator. The arbitrator will make a decision which you may accept or reject. If you accept the decision, GM will be bound by that decision. The entire dispute resolution procedure should ordinarily take about forty days from the time you file a claim until a decision is made. Some state laws may require you to use this program before filing a claim with a state-run arbitration program or in the courts. For further information, contact the BBB at 1-800-955-5 100 or the GMC Truck Customer Assistance Center at 1-800-GMC-TRUCK REPORTING SAFETY DEFECTS TO THE UNITED STATES GOVERNMENT If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA), in addition to notifying General Motors. If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in a group of vehicles, it may order a recall and remedy campaign. However, NHTSA cannot become involved in individual problems between you, your dealer, or General Motors. To contact NHTSA, you may either call the Auto Safety Hotline toll-free at 1-800-424-9393 (or 366-0123 in the Washington, D.C. area) or write to:

(I -800-442-8782).

NHTSA, U.S. Department of Transportation Washington, D.C. 20590 You can also obtain other information about motor vehicle safety from the Hotline.

8-4

REPORTING SAFETY DEFECTS TO THE CANADIAN GOVERNMENT If you live in Canada, and you believe that your vehicle has a safety defect, you should immediately notify Transport Canada, in addition to notifying General Motors of Canada Limited. You may write to:

Transport Canada, Box 8880 Ottawa, Ontario K1 G 352 REPORTING SAFETY DEFECTS TO GENERAL MOTORS In addition to notifying NHTSA (or Transport Canada) in a situation like this, we certainly hope you’ll notify us. Please call us at I-800-GMC-TRUCK (1-800-462-8782)

, or write:

GMC Truck Consumer Relations 3 1 E. Judson Street 1607-04 Pontiac, MI 48342-2230 In Canada, please call us at 1-800-263-3777 (French). Or, write:

General Motors of Canada Limited Customer Assistance Center 1908 Colonel Sam Drive Oshawa, Ontario LlH 8P7

(English) or 1-800-263-7854

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Roadside Assistance GMC Truck’s Roadside Assistance provides stranded owners with