1993 Chevrolet Suburban Owners Manual

by the tire manufacturers and their warranties are delivered with every new vehicle. your spare tire is a different brand than your road tires, you will have warranty folder from each of these manufacturers.

If

a tire

6-40

Poorly maintained and improperly used tires are dangerous.

Overloading your tires can cause overheating as a result of too much friction. You could have an air-out and a serious accident. See “Loading Your Vehicle” Underinflated tires pose the same danger as overloaded tires. The resulting accident could cause serious frequently to maintain should be checked when your tires are cold,

injury. Check all tires the recommended pressure. Tire pressure

in the Index.

0 Overinflated tires are more likely to be cut, punctured,

by sudden impact, such as when you at the recommended pressure.

or broken hit a pothole. Keep tires

If your tread is badly worn,

have been damaged, replace them.

0 Worn, old tires can cause accidents,

or if your tires Even if it’s legal, don’t have 16 inch tires. See “Special Tire Inflation” loading and inflation pressures at speeds above

in this section for more information on

65 mph (105 kmh).

drive over 85 mph (135 kmh) if you

is on the rear edge

of the driver’s door, or in the cab, shows the correct inflation

Inflation-Tire Pressure The Certification/Tire label which on the incomplete vehicle document pressures for your tires, when they’re cold. “Cold” means your vehicle has been sitting for at least three hours You can operate some vehicles at reduced inflation pressures only when be carrying reduced loads. On those vehicles, the minimum cold inflation pressures for a typical reduced Pressure” label located on the driver’s door. Weigh the vehicle load on each tire and see the label for the minimum cold inflation pressures for that load.

load are printed on the “Improved Ride Tire to find the

or driven no more than a mile.

you’ll

6-49

Don’t let anyone tell you that underinflation or overinflation is all right. It’- 9 . If your tires don’t have enough air (underinflation)

you can get

Too much flexing Too much heat tire overloading Bad wear Bad handling Bad fuel economy.

too much air (overinflation), you can get:

I If your tires have Unusual wear Bad handling Rough ride Needless damage from road hazards.

nth or more. Also, check the

to check tire pressure.

tire pressure of the spare tire. How to Check: Use a good quality pocket-type gage Simply looking at the tires will not tell you the pressure, especially if you have radial tires-which may look properly inflated even underinflated. If your tires have valve caps, be sure to put them back on. They help prevent leaks by keeping out dirt and moisture. Special Tire Inflation

if they’re

If you have 16 inch tires on your vehicle, and: - You’ll be driving for very long at speeds mph (120 km/h) where legal, inflate tires the recommended cold inflation pressure,

of 66 mph (105 km/h) to 75 10 psi (70 kPa) more than

- You’ll be driving for

very long at speeds of 76 mph

(120 kmih) to 85

mph (135 km/h) where legal, cold inflation pressure should be increased by 10 psi (70 kPa) and you must also reduce axle load capacity by 10%. Do not drive over 85 mph (135 kmlh) even if it’s legal.

- Inflation pressures should never exceed

inflation specified for the maximum 6-50

10 psi (70 kPa) above the

load of the tire.

6-51

K2474

Service & Appearance Care

Tire lnspecfion and Rotation To make your tires mileages recommended Maintenance Services” in the Index.

last longer, have them inspected and rotated at the

in the Maintenance Schedule. See “Scheduled

FRT

FRT

K2655

Use this rotation pattern, If your vehicle has front tires with different load ratings or tread designs (such as all season vs. on/off road) than the rear tires, don’t rotate your tires front to rear, After the tires have been rotated, adjust the front and rear inflation pressure as shown on the CertificationRire label. Make certain that all wheel nuts are properly tightened. See “Wheel Nut Torque” 1 CAUTION

in the Index.

it is fastened, can

a time. The wheel could

Rust or dirt on a wheel, or on the parts to which make the wheel nuts become loose after come off and cause an accident. When you change any rust or dirt from places where the wheel attaches In an emergency, you can use be sure to use a scraper or wire brush later, all the rust or

dirt off. (See ‘Changing a Flat Tire” in the Index.)

a cloth or paper towel to

a wheel, remove to the vehicle. do this; but to get

if you need to,

&52

When It’s Time for New Tires

TREAD WEAR INDICATORS

K1656

to tell when it’s time for new tires

One way indicators, which will appear when your tires have only less of tread remaining. You need a new tire if:

is to check the treadwear

2/32 inch (1,6 mm) or

tire.

You can see the indicators at three places around the You can see cord or fabric showing through the tire’s rubber. The tread or sidewall is cracked, cut cord or fabric. The tire has a bump, bulge The tire has a puncture, cut, because of the size or location

of the damage,

or split. or other damage that can’t be repaired well

or snagged deep enough

to show

Buying New Tires To find out what kind and size of tires you need, label. The tires installed on your vehicle when it was new had a Tire Performance Criteria Specification (TPC Spec) number on each tire’s sidewall. When you get new tires, get ones with that same TPC Spec number. That way, your vehicle will continue to have tires that are designed endurance, handling, speed rating, traction, ride and other things during normal service on your vehicle. the TPC number will be followed by a

“MS” (for mud and snow).

If your tires have an all-season tread design,

to give proper

look at the Certificationnire

6-53

Service & Appearance Care

by

If you mix

to

TPC Spec number,

as your original tires.

to the system developed by the United

If you ever replace your tires with those not having a make sure they are the same size, load range, speed rating and construction type (bias, bias-belted or radial)

tires of different sizes or types (radial and bias-belted tires) the vehicle may not handle properly, and you could have a crash. Be sure to use the same size and type tires on all wheels.

I CAUTION A Mixing tires could cause you to lose control while driving. Uniform Tire Quarity Grading The following information relates States National Highway Traffic Safety Administration which grades tires treadwear, traction and temperature performance. (This applies only vehicles sold in the United States.) Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government course. For example, a tire graded times as well on the government course as a tire graded performance of tires depends upon the actual conditions however, and may depart significantly from the norm due to variations driving habits, service practices and differences climate. Traction-A, B, C The traction grades, from highest the tire’s ability to stop on wet pavement conditions on specified government test surfaces tire marked C may have poor traction performance. Warning: The (straight-ahead) traction tests and does not include cornering (turning) traction. Temperature-A, B, C The temperature grades resistance to the generation of heat and tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material and reduce tire life, and excessive temperature can failure. The grade C corresponds to a level of performance which passenger car tires must meet under the Federal Motor Vehicle Safety

as measured under controlled of asphalt and concrete. A

its ability to dissipate heat when

this tire is based on braking

150 would wear one and a half

traction grade assigned to

in in road characteristics and

to lowesr are: A,

test (1 1/2) 100. The relative of their use,

are A (the highest), B, and C, representing the tire’s

of the tire to degenerate lead to sudden tire all

8, and C. They represent

6-54

of performance on

on General

or

is established for a tire that is

in combination, can cause heat buildup

of passenger car tires.

to these grades, all such tires meet General

test wheel than the minimum required by law.

Standard No. 109. Grades B and A represent higher levels the laboratory Warning: The temperature grade for this tire properly inflated and not overloaded. Excessive speed, underinflation, excessive loading, either separately or and possible tire failure. Those grades are molded on the sidewalls While the tires available as standard or optional equipment on General Motors vehicles may vary with respect Motors performance standards and have been approved for use Motors vehicles. All passenger type (P Metric) tires must conform to Federal safety requirements in addition to these grades. Wheel Alignment and Tire Balance The wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest In most cases, you will not need However, if you notice unusual tire wear the other, the alignment may need vibrating when driving on rebalanced. Wheel Replacement Replace any wheel that is bent, cracked or badly rusted. coming loose, the wheel, wheel bolts, and wheel nuts should be replaced. the wheel leaks air out, replace it (except some aluminum wheels, which can be repaired). See your GM truck dealer dealer will know what kind Each new wheel should have the same load carrying capacity, diameter, width, offset, and be mounted the same If you need to replace any replace them only with be sure you have the right wheel, wheel bolts, and wheel nuts vehicle.

or your vehicle pulling one way or to be reset. If you notice your vehicle to be

new GM original equipment parts. This

of your wheels, wheel bolts, or wheel nuts,

tire life and best overall performance.

a smooth road, your wheels may need

to have your wheels aligned again.

of wheel you need.

way as the one

it replaces.

way, you will for your

If wheel nuts keep

if any of these conditions exist. Your

If

6-55

I

I CAUTION

A Using the wrong replacement wheels, wheel bolts

or wheel nuts on

It could affect the braking and your vehicle can be dangerous. handling of your vehicle, make your tires lose air and make you lose control. You could have an collision in which you or others could be injured. Always use the correct wheel, wheel for

bolts, and wheel nuts replacement.

The wrong wheel can also cause problems with bearing life, brake cooling, speedometerlodometer calibration, headlight aim, bumper height, vehicle tire or tire chain clearance to the body and chassis. ground clearance, and

A Putting a used wheel on your vehicle is dangerous. You can't know how it's been used or how many miles it's been driven. It could fail suddenly and cause an accident. If you have to replace a wheel, use a new GM original equipment wheel,

Tire Chains

rNOTICE 'If p u t vehicle has LT265/75R16 size tires, don't use tire chams; they damage your vehicle.

c a n !

6-56

I

can be hazardous. Some are' toxic. Others can you strike a match or get them on a hot part are dangerous if you breathe their fumes

Cleaning products if urst into flame the vehicle. Some closed space. When you use anything vehicle, be sure doors or windows when you're cleaning the inside. Never use these to clean your vehicle:

to follow the instructions. And always open your

in a in a container to clean your

of

0 Gasoline 0 Benzene 0 Naphtha 0 Carbon Tetrachloride

Acetone Paint Thinner 0 Turpentine 0 Lacquer Thinner * Nail Polish Remover

They can all be hazardous-some more than all damage your vehicle,

too.

others-and they can

NOTICE

6-57

Service & Appearance Care

Cleaning the Inside of Your Vehjcle Use a vacuum cleaner often to get rid of dust and loose dirt. Wipe vinyl with a clean, damp cloth. Your GM dealer has powdered cleaner. They will clean normal spots and stains very well. Here are some cleaning tips:

two GM cleaners-a solvent-type spot lifter and

Always read the instructions on the cleaner label. Clean up stains as soon as you can-before they set. Use a clean cloth brush may be used Use solvent-type cleaners in a well ventilated area only. don’t saturate the stained area. If a ring forms after spot cleaning, clean the entire area immediately will set.

or sponge, and change if stains are stubborn.

to a clean area often.

a foam-type

A soft

If you use them,

Using Foam-Type CIeaner on Fabric

or section. Mask surrounding trim along

to remove any loose dirt.

Vacuum and brush the area Always clean a whole trim panel 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 As soon as you’ve cleaned the section, use a sponge suds. Rinse the section with a clean, wet sponge. Wipe off what’s left with a slightly damp paper towel Then dry it immediately with an air hose, a hair dryer

it roughly.

to remove the

or cloth. or a heat lamp.

NOTICE Be careful with a hair dryer or heat lamp. You

could scorch the fabric

Wipe with a clean cloth.

6-58

or it

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

Some spots and

soil from the trim material with a clean, dull knife little cleaner, light pressure and clean cloths

Gently scrape excess or scraper. Use very (preferably cheesecloth). Cleaning should start at the outside of the stain, “feathering” toward the center. Keep changing to a clean section of the cloth . 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 previous NOTICE.) Fabric Profection Your vehicle has upholstery that has been treated with ScotchgardTM Fabric Protector, a 3M product. ScotchgardTM 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 often Further information on cleaning is available by calling Minnesota, 1-800-642-61 67). Special Cleaning Problems Greasy or Oily Stains: Like grease, oil, butter, margarine, shoe polish, coffee with cream, chewing gum, cosmetic creams, vegetable oils, wax crayon, and asp ha1 t .

to keep it looking new.

1-800-433-3296 (in

tar

Carefully scrape off excess stain. Then follow the solvent-type instructions above. Shoe polish, wax crayon, tar and asphalt will stain seat fabric. They should be removed as soon as possible. Be careful, because the cleaner will dissolve them and may cause them

if left on a vehicle

to bleed.

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

Carefully scrape off excess stain, then sponge the place with If a stain remains, follow the foam-type instructions above. If an odor lingers after cleaning vomit watedbaking soda solution: (250 ml) of lukewarm water. Finally, if needed, clean lightly with solvent-type cleaner.

or urine, treat the area with a

1 teaspoon (5 ml) of baking soda to 1 cup

cool water.

6-59

Service & Appearance Care

Combination Stains: Like candy, ice cream, mayonnaise, chili sauce and unknown stains,

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

it with solvent-type cleaner.

Cleaning Vinyl or Leather Just use warm water and a clean cloth.

Rub with a clean, damp cloth to remove dirt. more than once. Things like tar, asphalt and shoe polish off quickly. Use a clean cloth and solvent-type vinylheather cleaner.

You may have to do

will stain if you don’t get them

it

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 certain conditions. Care of Safety Belts Keep belts clean and dry.

it difficult to see through the windshield under

it may severely weaken

safety belts. If you do,

Do not bleach or dye them. In a crash they might not be able to provide adequate protection. Clean safety belts only with mild soap and lukewarm water.

Glass Glass should be cleaned often. GM Glass Cleaner 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 iicense should not be attached across the defogger grid.

be damaged. Any temporary

(GM Part No. 1050427) or

6-60

if the wiper

GM Windshield Cleaner, Bon-Ami Powder@

of color, gloss

in full strength

if beads do not form when

Cleaning the Outside of the Windshield and Wiper Blades If the windshield is not clear after using the windshield washer, or blade chatters when running, wax or other material may be on the blade or windshield, Clean the outside windshield with (GM Part No. 1050011). The windshield is clean you rinse it with water. Clean the blade by wiping vigorously with a cloth soaked 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 retention and durability. 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 or chemical detergents. Use liquid hand, soaps. Don’t use cleaning agents that contain acid agents should be flushed promptly and not allowed to dry on the surface, or they could stain. Dry the finish with a soft, clean chamois towel to avoid surface scratches and water spotting. High pressure vehicle washes may cause water Finish Care Occasional waxing or mild polishing remove residue from the paint finish. products from your dealer. (See “Appearance Care and Materials” Index.) Your vehicle has a “basecoatlclearcoat” paint finish. depth and gloss to the colored basecoat.

be necessary to of your vehicle may You can get GM approved cleaning in the

to enter your vehicle.

of the sun, Don’t use strong soaps dish or car washing (non-detergent) or abrasives. All cleaning

The clearcoat gives more

or a 100% cotton

it clean by washing

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

6-6 1

I f

GM Chrome

To avoid damaging protective trim, never

to clean aluminum. A

if necessary.

to a high polish, is recommended for all bright metal

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 Polish on chrome or stainless steel trim, Use special care with aluminum trim. use auto or chrome polish, steam or caustic soap coating of wax, rubbed parts. Aluminum Wheels (If So Equipped) Your aluminum wheels have of your vehicle. Don’t use strong soaps, chemicals, chrome polish, or other abrasive cleaners on them because you could damage this coating. After rinsing thoroughly, a wax may be apptied. NOTICE f you have aluminum wheels, don’t use ?as hard silicon carbide cleaning brushes. These brushes can take xotective coating.

a protective coating similar to the painted surface

off the

an automatic vehicle wash that

GM White Sidewall Tire Cleaner. You can

it.

last longer, seal better, and not stick or squeak. Apply silicone

White Sidewall Tires Your General Motors dealer has a use a stiff brush with Weatherstrips These are places where glass or metal meets rubber. Silicone grease there will make them grease with a clean cloth at least eve@ six months. Sheet Metal Damage is damaged and requires sheet metal repair If your vehicle make sure the body repair shop applies anti-corrosion material repaired or replaced Foreign Material Calcium chloride and other salts, ice melting agents, road oil and tar, tree sap, bird droppings, chemicals from industrial chimneys, and 0the.r foreign matter can damage your vehicle’s finish Use cleaners that are marked safe for painted surfaces for these stains. Finish Damage Any stone chips, fractures or deep scratches right away. Bare metal repair expense.

will corrode quickty and may develop into a major

to restore corrosion protection.

if they remain on painted surfaces.

in the finish should be repaired

or replacement, to the parts

6-62

ice and snow removal and dust control can collect on the

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. Underbody Maintenance Chemicals used for 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, flush these materials from the underbody with 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. dealer or an underbody washing system can do this for you. Chemical Paint Spotting Some weather and atmospheric conditions can create Airborne pollutants 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 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.

in the paint job causes this, General Motors will repair, at

a chemical fallout.

plain

Your

6-63

old waxes, polishes, tar

Service & Appearance Care

Appearance Care Materials

PART NUMBER 1050172

1050173

I0501 74

1050214 32

1050244

I050427

USAGE

DESCRIPTION

SIZE 16 02. Tar and Road Removes (0.473L) Oil Remover and road oil 16 oz. (0.473L) and 16 02. White Sidewall Cleans white and black tires (0.473L) Tire Cleaner

Polish chrome and stainless steel

Chrome Cleaner Removes rust and corrosion on

and stain removal on leather

VinvVLeather Spot

oz. (0.946L) Cleaner 16 02. Fabric Cleaner Spot and stain removal on cloth (0.473L) 23 02. Glass Cleaner Glass cleanina and sDot (0.680L)

on vinyls

and fabric

or vinyl

1050429 6 Ibs. Multi-PurDose Cleans vinvl and cloth on door trim,

(2.72 kg) Powder

1050729

1051 055

IO51 398

1052870

1050201

Vinyl Top

Cleaner

8 02. (0.237L) 16 02. Preservatone (0.473L) 8 02. (0.237L) 16 02. Wash-Wax (0.473L) 16 02. Magic Mirror Exterior cleaner and I (0.473L) I Cleaner-Polish

Spot Lifter

(conc.)

1 polish

cleaner seats, and'carpet-also mats Cleaning of vinyl tops

Vinyl top dressing

Spot and stain removal on cloth and fabric Exterior wash

cleaning

tires and

TO077

6-64

Vehicle ldentification Number (\ I) m

t-

KO641

your vehicle.

It appears on a plate

in the front the instrument panel, on the driver's side. You can see it if you VIN also appears of

This is the legal identifier for corner of look through the windshield from outside your vehicle. The on the Vehicle Certification and Service Parts labels and the certificates title and registration. Engine Identification The eighth character This code will help parts in this section.

GM engine. you identify your engine, specifications, and replacement

is the engine code for your

in your VIN

6-65

Service & Appearance Cam

v) 0 a

Q,

pe: w 3 z

Qo

I-

O t J

It

C 9

6-66

POI 72

Service Parts Iden M f l cation Label

WHEELBASE

VEH!CLE IDENTfFlCATlOb NUMBER

6BJ 621. 62U 670 671 679 763 BHJ 9HJ

PAINT TECHNOLOGY

ORDER NUMBER

EXTERIORCOLORS

MODELMSIGNATION

OPTIONCONTENT

K2680

if you

You’ll find this label on the inside ever need to order parts. On this label

is:

of the glove box. It’s very helpful

Your VIN. Its model designation. Paint information. A list of all production options and special equipment.

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

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 ther things from working as they should.

by your warranty. Some of it can just keep

6-67

Service & Appearance Care

Specification Charts Replacement Parts Replacement part numbers listed in this section are based on the latest of printing, and are subject information available at the time part listed in this manual is not the same as the part used in your vehicle when it was built, or dealer. Engine identification

if you have any questions, please contact your

to change. If a

VIN

Fuel

Produced

BY U.S., Can. us.

TB I TB I

GVWR and below or: GVWR and above.

GM truck

Emissions

TO291

Liter

Displacement Type Engine System Code V8 V8

5.7 7.4

*Light Duty Emissions with 8500 Heavy Duty Emissions with 8501

Wheel Nut Torque

DESCRIPTION

MODEL

C 1500 K 1500, C-K 2500 C-K 2500 Cooling System Capacity

5 bolts

120 (14mm) 6 bolts (1 4mm) 8 bolts (14mm)

ft. Ibs. (1 60 Nmm) 120 ft. Ibs. (160 N-m) 120 ft. Ibs. (160 Nem)

TO2951

Without

ENGINE

CODE

5.7L 7.4-

VIN

NC

17.5 Quarts (16.5 Liters) 23 Quarts (22 Liters)

QUANTITY* AIC 18 Quarts (1 7 Liters) 25 Quarts (23.5 Liters)

With

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

5.

TO292

6-68

Crankcase Capacify

QUANTITY*

Filter

With

CODE Without ENGINE VIN Filter 5.7L 7.4L *All quantities are approximate. *After refill, the level MUST be checked as outlined under “Engine Oil And Filter Recommendations” in Section

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

5.

Air Condifioning Refrigeranf Capacify

5 Quarts (4.8 Liters) 7 Quarts (6.6 Liters)

TYPE* Refrigerant R-12 Front

AJC 3.0 Ibs.

kg) (1.360

Front and Rear AJC 4.25 Ibs. (1.927 kg)

If the air conditioning

GM ask sure, not your dealer.

*Not all air conditioning refrigerants are the same. system in your vehicle needs refrigerant, be sure the proper refrigerant is used. If you’re Fuel Tank Capacify

Model-Standard

Utility 30

Gallons

Wagon (159

Gallons 42

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

Model-Standard

Service Replacemenf Part and Filfer Recommendations

TO296

QUANTITY

TO302

TO2971

- 1 Air

Oil Filter PF5 1 PF35t PF35t PF35 PF35 PF35 PF35

5.7 (K) 6.2 (C) 6.2 (J)* 6.5 (F)*

PCV Valve Cleaner AI 7acw cv7agc A348C A348C A644C A644C A91 7C A348C

cv774c cv774c

cv774c

Spark** Plugs .CR43TS .CR43TS .CR43TS

.CR43TS

use a PF51 oil filter

Radiator

Fuel Filter GF481 GF481 GF481 TP 1 006 TP 1 006 TP 1 006 G F48 1

Cap RC36 RC36 RC36 RC32 RC32 RC32 RC36

*Heavy Duty Emission Engine **Use AC copper-cored resistor type spark plugs.

6-69

Fuses and Circuit Breakers

Circuit Breaker

Fuse 20 Amp

Name Gages

Circuits Protected

E.G.R., E.C.M.

Park LP P. Lps

15 Amp 10 Amp

Turn-BIU EMCIIgn

Inj. A Brake AC/Htr ctsy

10 Amp 15 Amp 25 Amp 20 Amp

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., Ign., R.W.A.L. Brake Switch Throttle Body Injectors A.B.S., Cluster-Speed0 H.V.A.C. 4 WD, Aux. Batt. Relay Dome Lamp, Ctsy. and Glove Box Lps. (TR-9), Radio (Memory-Clock) Horn Relay, Horn Feed, Park Lamps C49 SW Illum., Headlamp Radio Illum., H.V.A.C. Illum. Haz. Flasher, Seat Belt Buzzer, Stop Lmps., A.B.S. Memory Wiper Windshield Wiper, Washer Radio Radio Feed Acc/lgn. Pwr. Windows AcdBatt. Door Locks, Rear Window Defogger Crank Crank, Discreet 4WD Four Wheel Drive DRL Daytime Running Lights RR Wpr Rear Window Wiperwasher TIG Re1 Cigar Lighter, Rear Hatch Release An inline fuse is used for the underhood lamp Jo not use fuses of higher amperage than those recommended above.

5 Amp 25 Amp 15 Amp 25 Amp 25 Amp

20 Amp 5 Amp

25 Amp 10 Amp

“On” Warning,

StopiHaz.

15 Amp

30 Amp 30 Amp

TO291

6-70

FUSE LEGEND

pJ I ~

GAGES

HTR AIC

WIPER 19

TURNlBU

r.

4WD

PCM/IGN

BRAKE

rm

PARK LP

I rn

I INJA p # € m

PANEL LPS

TRANS

DRL

STOPIHAZ

6-7 1

Service & Appearance Care

Light Bulb Data

Lamp or Bulb Exterior Liqhts: Headlamps: 2 Headlamp System

Headlamps: 4 Headlamp System

Haloaen (Opt.)

(Composite)

Trade No.

6052 H6054 9005 9006

Power Rating

Candle

55/65 35/65 65

2 1

32-2

Lamps

Interior Lights: Dome Lamps 21 I Readina

Roof Console Lamps , Courtesy Lamp , Heater or N C Control Lamp Four Wheel Drive Indicator Four Wheel Drive Shift Lever Instrument Panel Compartment Lamp 1 Ashtray

Lamp

10

12

1-2 I 211-2 168 1003 194 161 1 94 1 94 I 194

Malfunction Indicator (“Service Engine - Soon”) Upshift Indicator *Suburban only tCanadian Vehicles

74 74

only

TO293

6-72

Scheduled Mainfenance Services Section

to retain it’s safety, dependability, and

This section covers the maintenance required for your General Motors vehicle. Your vehicle needs these services emission control performance. A Word About Maintenance ................................................................................. 7-3 Your Vehicle and the Environment ...................................................................... 7-3 Recording Maintenance Services ......................................................................... 7-3 Scheduled Maintenance Services ........................................................................ 7-4 Selecting The Proper Maintenance Services ............................................... 7-4 Gasoline Engines with Light Duty Emissions-

Maintenance Schedule I ............................................................................ 7-6

Gasoline Engines with Light Duty Emissions- Maintenance Schedule II ........................................................................... 7-8

Gasoline Engines with Heavy Duty Emissions-

Maintenance Schedule I .......................................................................... 7-1 C

Gasoline Engines with Heavy Duty Emissions-

Maintenance Schedule II ......................................................................... 7-1 2

6.2L and 6.5L Diesel Engines- Maintenance Schedule I .......................................................................... 7-1 4 6.2L and 6.5L Diesel Engines-

Maintenance Schedule II ......................................................................... 7-1 6

7-1

Scheduled Mainfenance Services

Explanation of Scheduled Maintenance Services ...................................... 7-18 Owner Checks and Services .............................................................................. 7-22 Recommended Fluids & Lubricants ................................................................... 7-25 Maintenance Record ........................................................................................... 7-27 Service Station Checks ....................................................................................... 7-28

7-2

in good working You may drive very

long distances all

in many other ways.

need more frequent checks and replacements than

Your dealer can be relied upon to use

GM dealer, the place many GM owners choose

If you have any questions on how to keep your vehicle

in very hot, dusty weather. You may use your vehicle in making

A Word About Maintenance We at General Motors want to help you keep your vehicle condition. But we don’t know exactly how you’ll drive it. short distances only a few times a week. Or you may drive the time deliveries. Or you may drive it to work, to do errands, or Because of all the different ways people use their GM vehicles, maintenance needs vary. You may even you will find in the schedules in this section. So please read this section and note how you drive. in good condition, see your to have their maintenance work done. 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. procedures are important. Improper vehicle maintenance or the removal of important components can significantly affect the quality Improper fluid levels or even the wrong emissions from your vehicle. keep your vehicle Recording Maintenance Services The Maintenance Record near the end of this section provides you to record the maintenance performed on your vehicle. Whenever any maintenance is performed, be sure to write 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

in good condition, please maintain your vehicle properly.

To help protect our environment, and

it down in the Maintenance

to qualify your vehicle for warranty repairs. rn

I CAUTION I A Performing maintenance work on a vehicle can be dangerous. In L trying to do some jobs, you can be seriously injured. Do your own maintenance work only if you have the required know-how and the proper tools and equipment for the job. If you have any doubt, have a qualified technician do the work.

tire inflation can increase the level

All recommended maintenance

a place for

to help

of the air we breathe. of

to do some work on your vehicle, you will probably

If you are skilled enough how to want to get the service information 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.

GM publishes. For information on

Scheduled Maintenance Services

Scheduled Maintenance Services This part tells you the maintenance services that you should have done and the times you should schedule them. and wants you to be happy with it. 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:

Your GM dealer knows your vehicle best If you go to your dealer for your service

carry passengers and cargo within the recommended limits. these limits on your vehicle’s Certification Label. See “Loading Vehicle” in the Index. are driven on regular road surfaces, and within legal driving limits. are driven off-road “Off Road Driving With Your Four Wheel Drive Vehicle.” use the recommended fuel. See “Fuel” in the Index.

in the recommended manner. See the index Under

You will find

Your

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. engine type will tell you which chart tell you which schedule to use. The charts are found later Selecting the Proper Maintenance Chart Your engine Duty or Heavy Duty Emissions) will tell you which maintenance chart Find your Vehicle Identification Number (VIN), and to see what your engine code Classifications table to find your emissions classification.

type (Gasoline or Diesel) and its emissions classification (Light

is. Then use the following Engine Emissions

to use, and your driving conditions will

in this section.

to use. look at the eighth character

Your

on the Service Parts Identification Label. See

of your instrument panel,

the plate on the top left corner

Your VIN is on the Certification Label and “Vehicle Identification Number” If your engine has more than one emissions classification, Certification Label to see what your Gross Vehicle Weight (GVWR) is. See “Loading Your Vehicle” in the Index.

in the Index.

look at your Rating

7-4

r

VIN Code

EMISSIONS ENGINE CLASSIFICATION

Enaine Description

4.3L V6TTBI with 8500 GVWR and below with 8501 GVWR and above 5.0L V8TTBI 5.7L V8TTBI with 8500 G W R and below with 8501 GVWR and above 6.2L V8IDiesel 6.2L V8IDiesel 6.5L V8IDiesel 7.4L V8/TBI .Except 454 SS Model with 454 SS Model

Emissions

LD HD LD

LD HD LD HD HD

HD LD

TO268

NOTE: TBI is a throttle body injection system. 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 Is any one of these Most trips are Most trips are temperatures are below freezing. The engine stop-and-go traffic, or commercial use). You operate in dusty areas or off-road frequently. You tow a trailer

true for your vehicle? less than 4 miles less than 10 miles (16 kilometers), and the outside

is at low speed most of the time (as

(6 kilometers).

of these is true for your driving,

If any one (or more) Schedule 1 is shown by a plus sign (t) on the chart. MAINTENANCE SCHEDULE Follow Schedule II ONLY if none of the above conditions are true. Schedule II is shown by a dot (.) on the chart.

follow Schedule I.

II

7-5

in door-to-door delivery,

Scheduled Maintenance Services

GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS-

FOOTNOTES: *An Emission Control Service **See “Explanation of Scheduled Maintenance Services” in this section. tTo determine the emissions classification

of your engine refer

Proper Maintenance Chart”

in this section.

to “Selecting the

TO337

7-6

MAINTENANCE SCHEDULE It

TO334

7-7

Scheduled Maintenance Services

GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS-

If your driving conditions meet those specified in “Scheduled Maintenancc I (t). 15 12

Services” in this section, use Maintenance Schedule

Miles (000) 3

(000) 5 10 12.5 15

6 7.5 25

20

18 30

Kilometers

Item No. Service Engine Change*-Every Oil Months, Filter 12 Change*-Every Oil or 2 Chassis Lubrication-Every 12 or Months, 3 Clutch Fork Ball Stud Lubrication 5 Cooling System Service*-Every

Months or

6 Air Cleaner Filter Replacement* 7 Front Wheel Bearing Repack 8 Transmission Service**

12 Months,

or

24

25 Drive Axle Service** 26 Brake Systems Inspection** FOOTNOTES: *An Emission Control Service **See “Explanation of Scheduled Maintenance Services” tTo determine the emissions classification of your engine refer

Proper Maintenance Chart”

in this section.

in this section.

to “Selecting the

TO332

MAINTENANCE SCHEDULE Ilt

THE SERVICES SHOWN ON THIS CHART ARE TO BE DONE AFTER 60,000 MILES AT THE SAME INTERVALS.

UP TO 60,000 MILES (100 000 km)

TO333

7-9

Scheduled Maintenance Services

GASOLINE ENGINES WITH HEAVY DUTY EMISSIONS-

I If your driving conditions meet those specified

in “Scheduled Maintenance

m -

‘OOTNOTES:

An Emission Control Service

“See “Exglal?ation of Scheduled Maintenance Services” L Also a Noise Emission Control Service I Applicable only to vehicles sold in the United States - To determine the emissions classification

Chart” Proper Maintenance

section.

in this

of your engine refer

in this section.

to “Selecting the

TO339

7-1 0

MAINTENANCE SCHEDULE It

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.

TO340

7-1 1

Scheduled Maintenance Services

GASOLINE ENGINES WITH HEAVY DUTY EMISSIONS-

Services” in this section, use Maintenance Schedule

If your driving conditions meet those specified in “Scheduled Maintenancc I (t). 15 10

Miles (000) (000)

Service

Item Kilometers No.

12 20

1 -

Oil Filter Change*-Every 12 Months,

or

10 11 12 13 14

’

15 16 17 18 19 I 20 ! 21 1 22

24 * Drive Axle Service** 25 3rake Systems 26 I

Inspection**

FOOTNOTES: * An Emission Control Service **See “Explanation of Scheduled Maintenance Services” in this section. A Also a Noise Emission Control Service I Applicable only t To determine the emissions classification of your engine refer

to vehicles sold in the United States

Chart”

Maintenance

to “Selecting the Proper

T033f

7-1 2

MAINTENANCE SCHEDULE If your driving conditions Maintenance Services”

Ilt

do NOT meet those specified

in this section, use Maintenance Schedule

in “Scheduled II (9.

THE SERVICES SHOWN ON THIS CHART ARE TO BE DONE AFTER 60,000 MILES AT THE SAME

UP TO 60,000 MILES (100 000 km)

INTERVALS.

TO335

7-1 3

Scheduled Maintenance Services

6.2L AND 6.5L DIESEL ENGINES-

FOOTNOTES:

* 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 checked as often as every * An Emission Control Service ** See “Explanation of Scheduled Maintenance Services” in this section. to trucks sold A Also, a Noise Control Service (applicable t This maintenance schedule applies

300 miles (483 km) and replaced as necessary.

to vehicles with engine VIN Code J).

to all diesel engines available.

in the United States.

Applicable only

TO330

to be

7-1 4

MAINTENANCE SCHEDULE It

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.

TO341 I

7-1 5

Scheduled Maintenance Services

6.2L AND 6.5L DIESEL ENGINES-

-0OTNOTES:

* An Emission Control Service ** See “Explanation of Scheduled Maintenance Services” in this section. W Applicable only A Also, a Noise Control Service (applicable t This maintenance schedule applies

to trucks sold in the United States.

to sll diesel engines available.

to vehicles with engine VIN Code J).

TO33 1

7-1 6

MAINTENANCE SCHEDULE Ilt

If your driving conditions do Maintenance Services” in this section, use Maintenance Schedule

NOT meet those specified

in “Scheduled II (0).

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.

TO336

7-1 7

Scheduled Maintenance Services

Explanation Of Scheduled Maintenance Services Below are explanations of the services listed in the maintenance charts. The proper fluids and lubricants to use are listed whoever services your vehicle uses these. all necessary repairs done before you or anyone else drives the vehicle.

in this section. Make sure All parts should be replaced and

1. ENGINE OIL AND OIL FILTER CHANGE* -ALWAYS USE SG OR

SG/CE QUALITY, ENERGY CONSERVING VISCOSITY. To determine the preferred viscosity engine (e.g. SAE 5W-30 or 2. CHASSIS LUBRICATION

10W-30), see “Engine Oil”

-Lubricate the front suspension, king

oil for your vehicle’s in the Index. pin

II OILS OF THE PROPER

(2 wheel drive), brake

bushings, steering linkage, transmission, and transfer case shift linkage, parking brake cable guides, propshaft splines 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 1, or every 3,000 (5000 km) for Maintenance Schedule 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 or they could be damaged. them warm up before lubrication Also, be sure to check all the vehicle fluid levels at this time.

2.

3. CLUTCH FORK BALL STUD LUBRICATION

-Lubricate the clutch fork

ball stud through the fitting on the clutch housing. Lubricant must be added “sparingly” to the fitting, as only. lubricate the ball stud surface. Do not add lubricant more often than the intervals in the Maintenance Charts.