1993 Chevrolet Corvette Owners Manual

h o w when theze’s a, problem with your vehicle, When one of the warning lights comes on and stays on when youwe driving, or when one of-the gages shows there may be a problem, check the section that tells you what to de about itr Please follow the manuaI’s advice. Waiting to .do repairs can be costly-and even dangerous. So please get ta h o w your warning lights and gages. They’wa big help. Your vehicle also has a Driver Infomation, Center that works .along with the warning lights and gages. See the Index under Driver Infomzatlcrn Center.

Fuel Gage Your fuel gage bars light up when the- ignition ken, -or if the ignition is off, wken you turn on your.parking lights, to’ show you about how much fuel you have left.. When the normal display -is ,down to .the last two bars, the message RESERVE will appear on the left of the-:gag.e.

Here are threethings that some owners ask about. None of these show a problem with your bel gage: At. the gas station, the gas pump shuts .off be€ore the gage reads F (Full). It takes a little more or. less fu.el to fill up than the gage indicated. For .example., the gage may have. indicated -t-he tank was half full, but it actually t0.olr.a 1.ittle more or. less than half the tanlr’s capacity to ‘fill the tank. The gage moves a lit& whmyau turn .a c-arner or spee.d up. For your fuel tank cap,acity, see Service Station Information an the last page of- this manual.

Engine Oil Preesure Gage Your oil pressure gage shows the oil pressute .in psi (ptiunds per. s-quare inch) or l

Features & Controls

.Driving. your vehicle with low oil pressure can cause extensive engine -damage.

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This gage shows your oil temperature in degrees Fahrenheit + It's normal fop the oil temperature to vary, depending on the type of driving you do and the weather conditions.. If "you drive for a long time, such as on a trip, the gage will show a higher reading- than if you had driven for only a short time. And if it's hot -outside, the-reading will be higher than if it were cold outside. If your oil temperature approaches the shaded area and stays there for some time; your oil temperature is too high. Check the engine oil levei and bring your vehicle in for service. You should also check the engine coolant temperature. If your engine is to.0 hot, see the.Index under Engine Cooling System. For accurate gage measurements refer to the GAUGES button on the Trip Monitor (see the Index under Trip Monitor).

LT1 Engine: Engine' Oil temperature Gage

"LT5 Engiie: Engine Oil Temperature, Gage

For accurate gage measurements refer to the. GAUGES button on the Trip Monitor (se.e -the In&x under Trip Monitor).

Voltmeter Your chafging system gage will show the rate of chafge-.when the engine is running. (When the engine is not running, the- display measures the voltage- output of your battery.) The reading will change sts the rate of charge changes (with .engine speed, etc.), but readings between the shaded are.as indkate the noma1 operating. range. Readings in either shaded area indicate-a passible-problem with ydur charging system. The CHECK GAUGES light will come on du-g both high and.10-w battery voltages. See your dealer to have your system sewiced immediately.

Features & Controls

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This gage shows the engine coolant temperature, I If the gage pointer moves-into the shaded area, yow-engine is too hot! It meamthat your engine coolant has overheated. If you have, been operating your vehicle under- normal driving. conditions, you should pull off the road, stop your vehicle and turn off the engine as soon as possible.

HOT COOLANT CAN BURN YOU BADLY! In Problems on the Road, the- manual shows what to do. See the Ifidex under Engine Overheating. For -accurate gage measurements refer to the GAUGES button on the Trip Monitor (see Trip Monitov later in this section). If the LOW COOLANT light, located -on the Driver Information Center, comes on, your system is low on coolant -and your engine may overheat.

Brake System Warning Light Your Corvette’s hydraulic brake system is divided.into two parts. If one part isn’t working, the other part can still work and stop you. For good braking, though, you need both parts working well. If the warning light goes on, there could be a brake problem. Have-your bralce system inspected right away. This light should come on as you start the vehicle. If it doesn’t come on then, have it fixed.so it will be ready to warn you if there’s a problem.

This; light will also cor ne^ on when y0.u set your parking brake:, and Will stay on if your parking brake doesn’t releast. fully. If.itstay-s on after your parking brake is fully released, it means you have a brake. problem. If the light comes on while driving, pull off the road and stop carefully. You may notice that the p.eda1 is harder ta push. Or, the-pedal may go closerto the floor. It may tale longer to stop. If the light is still on, have the vehi-cle towed fo’r service. (See the Index under Towing Your Corvette. ) When yo.ur ,aziti-loclr systerfi is working, the ABS ACTIVE light will come on. This means that slippe-ry road conditions may exist. Adjust your driving accordingly. See the Index under A B S Active Light.

if the brake light, SERVICE ASR light and SERVICE ABS Iight come on at the same time, you may have low brake fluid. See the Index under Brake Master Cylinder.

GAU I I U N

-with the brake- warning light. on can lead .to awaccident. ,If thclight is stiI.1 .on after you’ve.:,ptilled off the mad- . a d . st0ppe.d carefully; :have the vehicle.towed for service.

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Door Ajar Light This .li.ght.tells you that one of the doors isn2 fully closed. Have your Corvette serviced if this light comes on and stays on when your doors are closed. DOOR AJAR Reminder If a-do-or is not fully-closed when the ignition ley is in the Run position, the hformafion center in the instrument cluster will diq$ay DOOR AJAR. If the ley is in the Lock position and the driver’s door is ajaq :a chime will sound also. Your vehicle has a theft deterrent system. See the Index under Universal Theft D-gterrent.

Features & Controls

Check Gauges Light This light will come on briefly whien y6u are starting the engine. I€ the light comes on and stays on while you are driving, check your various gages to see if they are in the warning zones. If this light comes on and stays on with the engine running, this indicates one of the following conditions: high oil temperature high coolant temperattiE’ high battery voltage low battery voltage IOW or low fuel level (zero bars showing).

oil pressure

Security Light The SECURITY light reminds you to arm your theft deterrent system by flashing when the ignition is in Lock- and the doors are opened. It keeps flashing until you arm the theft deterrent system by locking the doors using the power door lock button or the Passive Keyless Entry system. Once the system is armed, the light stops flashing and remains lit. When the last door is shut, the light will stay on for two seconds and then go out. It will also remain lit if the hatch is left open but the theft deterrent system is still armed.

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If you close the doors and the hatch without arming the system, the SECURITY light goes out immediately. When you re-enter the vehicle, the light w.ill flash until you close the door or the hatch, or turn the ignition .on. See the Index under PASS-Key TM and Universal .Theft Deterrent.

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1 Engine The Engine Oil Life Monitor us&& engine oil temperature and engine revolutions to 'determine when the oil is nearly worn out. There ,is a CHANGE OIL light on the left side ,of the- instrument cluster. It comes on for a fkw seconds as a bulb check when you sta-rtyour vehicle. It mrnes on and stays on when it is time to change yuur oil. The CHANGE OIL light is only a reminder. You should change, your oil at $he intervals recommended in your Maintersance- Schedule menif the CHANGE OIL 1-ight hasn't come on.

Resetting the Engine Oil Life Monitor: 1, %LEU the key to the Run pasition, but

don't start the engine.

2. Press the ENG MET button .on the Trip Monitor. Within five seconds, press the ENG MET button again. 3. Within five seconds of step 2, press and hold the GAUGES button on the Trip Monitor. The CHANGE OIL light d flash.

4..Hold the GAUGES button until the. CHANGE OIL light stops flashing and goes out; This should take about ten seconds. When the light goes out, the Engine Oil Life Monitor is reset. If it doesn't reset, tum the- ignition to Of€ and repeat the procedure.

Features & Controls

Trip Monitor The Trip Monitor allows control of the display in the center of your instrument panel and provides useful travel infomatioi on: Fuel Economy Fuel Range Distance Traveled Gages

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I Control Buffons There are six control buttons on the Trip Monitor. The buttons and the infomation they display are: FUEL pressed the:

INFO: Each time this button is

instantaneous fuel economy average fuel economy or fuel range

will be displayed. Pressing the button a fourth time will blank the display. The FUEL INFO button displays instantaneous fuel economy and average fuel economy calculated €or your specific driving conditions. Press FUEL INFO to display instantaneous fuel economy, such as:

28 INST. MPG or 8.4 INST. U l O O KM

! Press FUEL INFO again to display average fuel economy, such as: 25.2 AVERAGE MPG or 9.3 AVERAGE u100 KM

Press again to return to fuel range information. Fuel range is the remaining distance you can drive without refueling. It's based on he1 economy and the fuel remaining in the tank, such as:

RANGE 235 or RANGE 378

FUEL RESET: This button resets the system in order to accurately compute your fuel economy and range. Press FUEL after refueling.

TRIP OD0 Press. this button to. change the odometer. Ee,ading to- a trip odometer--teading. P1es.s again t a - r e t m the display to the odometer reading., The trip odometer can be u-sehl to measure the actual distance you travel on a trip. TQ -set it to zero, see TRIP RESET below. The..adometer will. ihrninate with the fgni"tion off .and the parkifig lights on. TRIP RESET: With TRIP OD0 selected for, dis.play, .p m s ..and hold.the TRJP button for two seconds to change the trip odometer ,reading to zero. ENG MET This batton c h a q p the display from customary .Uaited States measures. (English) tu Canadian measures (mettic).

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OH femperature Display GAUGES: E+& time this button is prwsed the:

Coolant Temperature Dtsplay

oil temperature

-4 coolant temperature. . - or battery voltage will be- digitally displayed. The displey will change to: HI OIL HI COUL HI VOLT or LO VOLT, .If conditions in the. c.prresponding gages read higher or lower th.m normal. If the oil mdxoolant ternpxatur.e$ arc below 32°F (O,*C), the trip monitor will display LO when the,actual gage ternpiratwe i s displayed

Battery Voltage Displ,ay

Features & Controls

Low Coolant Warning Light If this light comes on, your system is a low on coolant and the engine may overheat. See the Index under Engine Coolant and have your vehicle serviced as soon as you can.

Driver Infomtation Center The Driver Information Center (DIC) gives you important safety and maintenance facts. It will display warning lights €or the following:

LOW COOLANT LOW TIRE PRESSURE [Option] SERVICE LTPWS (Low Tire Pressure Warning System) [Option] INFL REST (Inflatable Restraint)

(Charging System)

SERVICE ABS (Anti-Lock Brake System) SERVICE ENGINE SOON SERVICE RIDE CONTROL [Option] LOW OIL A B S ACTIVE SERVICE ASR (Acceleration Slip Regulation) ASR ACTIVE ASR OFF PASSIVE KEYLESS ENTRY

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Low 7ire Pressure Warning Light (OPTION) The LTPWS has a sensor 'on each road wheel that transmits-to a receiver on the instrument panel. The system operates on a radio frequency subject to Federal Communications Cbmission (FCC) Ruks. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interhence, and (2) This device.must accept any interhence received, including interference that-may cause undesired operation. Changes or modifications to- this system by other than an authorized service

facility could void authorization to use this equipment. The Low Tre Pressure Warning System (LTPWS) monitors the air pressure in each road tire (except the spare tire) while the car is being driven. The LTFWS will not warn the driver if a tire is already flat before the vehicle is started. This light comes on whenever a tire pressure goes below 25 psi (I 75 Ha) in any road tire while your Corvette is being driven. You must drive the car faster than 25 mph (40 km/h) and for more than 2 miles (4 h) -for the system to work properly. The Low Tire Pressure Warming Light also warns you if any of the system's comp.onents-are not working properly. The LOW TIRE PRESSURE light will remain on until the ignition is turned off. This will also reset the system.

When the LOW TIRE PRESSURE fight comes on, check the tire -pressure .in all four road tires as soon as you can, using the tire pre:ssure gage.provided in thesenter console. Adjust the tire pressure as needed to those shown on the Tire-Loading Information label 10-cated on the driver's door, The LOW TIRE PRESSURE light may come on if your vehicle is close to aaother vehicle that has a Low Tire Pressure Warning System and has a tire-with low pressure. The LTPWS sensor is directly opposite the valve stem on the tire. Take extreme care when servicing or having your tires serviced. The sensors may not work properly if damaged. . . If you need to take the tire off the wheel, do it at a 90" angle from the valve stem. Removing the tire from the wheel at any

Features & Contro1.s

LTPWS light will come on. Each time the vehicle is started thereafter, the light will come mand stay on until the vehicle. is moved. When the vehicle is moved, the- SERVICE LTPWS light will go out. This is a normal condition, and does not indicate anything-wrong with the system. (If you would Iilre to permanently clear the SERVICE LTPWS light from your Driver Information Center, see your dealer for assistance.) The SERVICE LTPWS light will also corne. on if.the vehicle is operated for three consecutive half-hour periods- when ,dl four tires- have been replaced with snow tires or aftermarket tires, or if all four LT-PWS sensors. are damaged or missing. The SERVICE LTPWS light will stay o.n until the system receives a sensor signal. I€ the light 'comes on and stays on even when the vehicle is driven, this may .indicate a problem. See your dealer for assistance. To prevent damage to the sensor, follow the instructions for mounting and dismounting tires in the 1993 Corvette, Service Manua.1. LTPWS can warn you of a Idw tire situation-or a system problem, but it -does not substitute .foT.norrnal tire maintenance. See the Itzdex under Tires;

Service LTPWS Light (OPTION) The SERVICE LTPWS light comes on whenever a Low Tire PressureWrtming System component is not working properly. It may also come on during law speed (less than 25 rnph, 40 I d h ) or. stop-and-go driving, even though tire pressure is above 25 psi (175 kPa-) in each tire. This light turns o€f when the electronic receiver gets a coded signal from each sensor.. .Check the system by turning the ignition off, then on again. If'lhe system is worling, the light should come on-and then go out. See your dealer if the light remains on or doesn'.t come on .at ail. If your vehicle is operated for three consecutive half-hour time periods without being moved, the . . SERVICE

point more than 90" from the valve stem may damage the LTPWS sensors.. If this light stays on after the tire pressure i s properly adjusted, see your dealer.

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/iflatable Restraint light The. INFL REST (Inflatable. Re'str'aint) light Is part ofthe Supplemental Inflatable Restraint system on your vehicle. This light will flash -seven t,o hine ti-mes when you turn the ignition key to Ruil. If: thklight comes oh.when you are driving, fails to glow when you turn the key to Run, or stays on after turning the key to Run, there may be a problem with the system.

.ASR System. Warning and lndicator Lights The following three 1ights.m your Driver Information Center tell you abo.ut your .ASR (Ac.ce1eratio.n Slip Regulation),

ASR Acfive Light This indicator on the Driver- Information Center will come on when you turn the ignition on and remain on for a few seconds during a system check. It also indicates when the ASR system has been activated. See the Index under Accel@rution Slip Regulation. (ASR) System.

Features & Controls

ASR Off Ught This indicator will coine on when you turn the ignition on and remain on for a few seconds during a system check. It also comes on and stays on when the ASR button is pressed to turn the system off. See the Index under Acceleration Slip Reguluat'a'on (ASR) system.

Seruice ASR Light This indicator will come on when you turn the ignition on and remain on for a few seconds during a.system check. If it stays on, this may indicate a problem with the ASR system. See your dealer for service.

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~f you let y m i tires :spin at- high .speed when.~e.. .ASR. .. .OFF light is.:on, :or dieg-the ',SERVICE ASR Iight ,is on, .your . .' tires can pplode,.and, you 'or others could .be injured. And, spinning your tires with either- of -these light2 on can cause the-automatic . transmission to overheat or can .: 'cause other problems. That .could cause an engine fire or other damage. When you're stuck, spin the wheels as little as possible. If' your vehicle is stuck; don't: .spin the wheels above 35 mph (56 W h ) as shown on the speedometer,

NOTICE

i I 1 ABS Active Light

This light c0me.s on when the-anti-lo-clr brake system is engaged to prevent wheel lock when braking. You may hear or. feel the-anti-lock system running through a diagnostic test. This light will also come on as a test for .about two seconds when the engine is ‘started.

Service ABS Light This light will come on as a test for .about- two seconds when the engine is .started. If it stays on, - or comes an while you are driving, carefully stop your vehicle as .soon as you can and turn the ignition off. Then start the engine to restart the system. If the SERVICE ABS light stays on, or it comes on again while you are driving; the anti-lock system needs service. Unless the BRAKE warning light is also on,. you will still have brakes, but not ABS. See the Index under-How the Anti-Lock SyStePn Works.

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Features & Controls

Charging System Light The charging system light will come on when you turn on the ignition, but the engine is not running, as a check to show you it is working. Then it should go out. If it stays on when the engine is running; or comes on while you are driving, you may have a problem with the electrical charging system. It could indicate that you have. a loose or broken drive belt or another electrical problem. Have it checked right away. Driving while thisJight is. on could drain your battery. If you must drive a short distance with the lght un, be certain to turn of€ aU. your accessories, such as the radio and air conditioner.

Low Oil Light This light will come on for a few seconds wheri you start your vehicle and will stay on if your oil is '/z to 1% quarts low (with the vehicle nearly level). See the Index under Engine UiE. For the LT5 Engine Only: If this light comes on, and you need to verify the oil level, let your vehicle sit for approximately two hours with the engine off before checlung the oil, See the Index under Checking Engine Oil Level for the proper procedure. You should check your oil level regulariy. This light is an added reminder.

Malfuncfion Indicator Lamp (Senrice h g h e Soon Light) A computer monitors operation of your fuel, ignition and emission control systems. This light should come on when the ignition is on, but the engine is not running, as a check to show you it is working. If it does not come on at all, have it fixed right away. If it stays on, or it comes on while you are driving, the computer is indicating th,at you have a problem. You should take your vehicle in for service soon.

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The Selective Ride Control system is designed to sense vehicle speed in the first minute after the vehicle is started. If the vehicle has not been moved in the first minute, the Selective Ride Control system will interpret this as a vehicle speed fault. After thee consecutive . vehicle speed faults, the SERVICE RIDE CONTROL light will turn on. Once the vehicle is moved, the SERVICE RIDE CONTROL light will go out.

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Features & Controls

Passive Keyless Entry Light If the.Passive Keyless Entry system is on, this light comes on for two seconds whenyou put the key in the ignition and turn it to the Run position. If the Passive -Keyless Entry .system is off, the light will not cume on. This light also comes on .md flashes when you we programming~ one or more transmitters. See the- Index under. Passive Keyless Entry System.

System Problems The Central Control Module (CCM) controls several electronic systems on your Corvette. SYS will flash three times every 15 seconds on the display near the he1 gage if there is a problem with one of the CCM-cantrolled systems. Have your vehicle checked by a. Chevrolet dealer if SYS keeps appearing. If the SECURITY light flashes at the same t h e SYS flashes on the instrument panel, a ,problem has been detected in your the& deterrent system. If this OCCUTS, have YQW vehicle serviced.

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Roof Panel ~ X W E ) Removing the Roof Panel: ' 1. Be sure your vehicle is on a level

place.

2. Set the parking brake. 3. Shift your automatic transmission into P (Park). Or, if you have the manual transmission, shift it into R {Reverse).

4. Lower the side windows all the'way

down.

position.

5. Turn your ignition key to the Lock

6. Move both sun visors to the side to uncover the .front bolt access holes.

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7. Remove the ratchet wench from the center console storage compartment.

8. Use the-wrench to loosen the two -front attaching bolts. Don't remove them. They'll stay in place when theyke luase.

9. The two rear attaching bolts are,on

the roof, one above each seat; Use the wrench to loosen these two bolts until the roof panel is -free. The rear bolts are designed to stay securely in the roof panel. This prevents rattling when the roof panel is stored.

10. To store your roof panel, open the rear hatch lid. Look for the two storage brackets in the rear area, .one below each courtesy light,

11. Use assistance when removing the

roof panel until you 'are sure you can do it alone. Stand onzeither side of the vehicIe. First, lift the front of - the roof panel up. Then move it forward as,.you lift it off the vehicle.

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Features & Controls

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Roof Panel (CONT.) Storing the Roof Panel: 1. Store-the roof panel with its-top up

and rear pciintiqg fornard.

2. Slide the rear corners of the roof

panel into the storage brackets and push forward.

3. Lower the front of the roof panel,

centering it over the latch pin.

.4. Pull the latch release toward you and press down on the roof panel until the

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Reinstalling the Roof Panel: '1. Follow steps 1-7 in Removing the Roof Panel, earlier this .section, to prepare your vehicle.

2. Open the rear hatch and remove the

roof panel horn its stored position by reversing the procedure in Storing the Roof Panel, earlier in this section.

3. Lower the roof panel onto the top of

the vehicle, rear edge first, placing the rear guide pins of the roof panel into their locating holes.

4. Lower the front of the roof panel and

position the front guide pins.

7. Fully tighten the rear bolts, then the front bolts. If the balts- aren't tight enough, the roof panel may male a popping noise wbde you drive. If this

I happens, tighten the bolts securely.

5. Use the wrench to partially tighten

the two rear attaching bslts.

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6. Use the wrench to loosely start the

front two attaching bolts, making sure the bolts are properly threaded into the roof panel. If the front bolts seem hard to start, tighten the rear bolts some more. Also, holding down the panel on the outside will help you start the bolts.

Features & Controls

Ccznverfible Top fopTIoNJ The following sequences explain the pruper operation of your convertible top. Follow these instructions and be sure to-take pmper care of your convertible top. See the Index under Cltming Your Cunvertibk Top.

If your Comette suffers a power loss, such as a "dead battery," you can still open the storage: compartnient by using the manual release handles located behind the safety belt anchors on each side of your vehicle.

Locating the release handles may be difficult. Reach up and behind the safety belt anchors; you will find a releas-e handle near the sidewall and behind thi- safety belt .anchor on each side of your vehicle. Move the handle toward the rear of the vehicle and upward, as shown in the illustration above.

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To Lower Your Convertible Tow

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. Park on a level surface, set the parking brake firmly, shift an automatic transmission into P (Park) and shut off the engine. Shift a manual transmission into R (Reverse). Then lower both windpp and-sun visors.

3. Tilt the driver's seatback forward.

The convertible top release handle is located behind the driver's seat and beneath the deck lid. Pull the release handle forward to unlock the rear of the convertible top, then lift and hold the rear of the convertible top.

i 1. Unlock the front of the convertible

top by turning the latch handles outward and then lift the top off the windshield slightly. Then unfasten the Velcro@ strips at the rear of each window opening.

Features & Controls

Convertible Top (CONT.) 4. Press either the stoTage compartment lid button located behind the driver's seat or the button in the c.enter console. Then rake the lid.

5. Lower the rear of the top back to its original :pasition. Then lift the front edge -of the top up and back with a slow, smooth motion. When folding the top into the storage compartment, make sure the fabric is folded between bows.

4. Latch:the top by tuning the handles

toward the center of the vehicle. If needed, push down on the outside corners .

5. Lift the re-ar ofthe tap and close the

cdmpartment lid firmly.

To Raise Your Convertible Top: 1 .Park on a level surface and set the

parlung brake firmly. If you have an automatic trmsmission, shift into P (Park) and shut of€ the engine. If you have a manual transmission, shut off the engine and shift into R (Reverse). Then lower- both windows and 'sun visors.

2. Ud-ock the sturage compartment by

pressing either the storage co,mpartment lid. button ioc-ated ... behind the driver's seat or the button in the center console. Now raise the lid. 3. Turn the latch hahdles outward. Pull the top up and forward until It lines up with ehe- whdshield.

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Features & Controls

Convertible Top (CONT.) 6. Lower the rear of the top so the latch pins align with the holes in the lid. To secure the rear of the top, push down firmly on both corners:

7. Fasten the Velcro@ strips for the

headliner at the rear of each window opening. Then fasten the Velcro@ buttons at the lower kont corner of the top.

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For care and cleaning of your convertible top, see the Index under Cleaning Your Convertible Top.

Converfible Hardtop (OPTION) The convertible hardtop, has.:been designed: for extended use inboth warm and cold weather. The installation and removal of this top requires two people and takes approximately 30 minutes. For hardtop removal, you will need the Tom@ wrench and flat ratchet wrench stored'in the center console.

To 'Remove Your Convertible. Hardt0.p: 1,. Make:.sure you ppk -on a h e 1 surface -and set the parking bpalce firmly. Shift the transmission, (:auttmatic or. rriiaiual) to N (Neutral) and lo-wer bot-h windows: Then turil off -the ignition.

Features & Controls

Convertiible Hardtop (CONT.) 4. Loosen the rear comer bracket bolts

with the ratchet wrench.

5. Using the Torx@ wrench, remove the

two lower bolts (A) from th-e lock pillar bracket on each side, Remove the bolt (B) from the bottom flange of each lock pillar bracket. Then remove the two upper bolts (C) from the -receiver bracket on each side.

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6. Slide both lock pillar brackets down * and forward from the receiver

brackets. The hardtop may have to be lifted slightly to remove the brackets.

7. Disconnect both wife connectors

located behind the lock pillar brackets. These are the rear window defogger wires.

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To Install Your Convertible Hardtop: '1. Park on a level surface, set the parking brake fimily, shift an automatic transmission into P (Park), and shut off the engine. Shift a manual transmission into R (Reverse), Then lower both windows. Turn off the.radio to lower the power antenna and then turn off the ignition. Laww the- convertible top into the normal st.orage-position.. See the Index under Lowering Your Cowertib1.e Top.

2. T&h one. person on each side,

carefully position the. hardtop .over the vehicle. Lower, the hardtop slowly, aligning the rear bolt spacers onto the bezels, and front .conical nuts into the tapered receivers. Realign the hardtop, if necessary.

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Features & Controls

Insert the two upper Tarx@ bolts (C) into both receiver brackets:. The hardtop may have- to be lifted slightly to install the lock pillar bracket.

5. Secure, but don’t fully tighten, the rear corner bracket bdts using the flat ratchet wrench.

A ’ To help,avbid .p&oial

,injury,,tighten all hardtop

.fasteners before driving the vehicle.

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4. If the hardtop hasn’t lowered into place, pull the release lever -behind the driver3 seat.under the storage compartment lid.

Convertible Hardtop (CONT.) -3. Move both seats forward. Then slide the lock pillar bracket into the receiver bracket until the scribed line is even with the lower edge of the receiver bracket. Make-sure the black wire. connectors are inside the vehicle and connected.

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6. :Tighten the front bolts by inserting

the Torx@wrench, through the access holes above the sun visors.

7. Insert the lower TorX@ bolt (B) into the bottom flange of the 1o.ckpillar brackets and tighten. Install and tighten the remaining Tmx@ bolts -(A) into the lockpillar brackets.

8. Using the Bat ratchet wrench, tighten the. rear corner bracket bolts. Do not over-tighten these bolts. Then slide -the. rear shelf panel over the rear shelf deck..

A If the .hardtop isn't' secure, it

can't give as much -protection

in a cmh. A loose hardt0.p co.uld fly .off the; vehicle accident or sudden maneuver. You or others could be injured. Don't :&tie your vehicle until all the hardtop hsteners .are tight..

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1 n this part you'll find out how to operate the comfort control systems and audio systems offered with your Corvette. Be sure to read about the particular system supplied with your vehicle.

.Co,mfort '

Player

Climate Control ................................................................................................ 136 Automatic Electronic Climate Control .......................................................... 140 Setting the Clock .............................................................................................. 148 AM/FM Stereo with Cassette 149 AM/FM Stereo with Cassette Player (Delco-Bose@- Music System) ............. 152 AM/FM Stereo with Cas.sette/CD Player (Delco-Base@ Music System) ...... 155 Understanding Radio Reception .................................................................... 159 Care o€Your Cassette Tape Player ................................................................. 160 Care of Your Compact Discs .......................................................................... 160 Power Antenna Mast Care .............................................................................. 161

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Comfort Controls & Audio Systems

CZimate Coratrol The air conditioner and heater work best if you keep your windows closed while using them. Your vehicle also has the flow-through ventilation system described later in this section. OFF: Press this button to turn the system off. Press any function button to turn the system on. Temperature Control Lever: This lever regulates the temperature of the air coming through the system. Fan: The two fan buttons allow you to select the force of air you want. Press r3f to lower the fan speed, or

A to raise it.

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Air Condifioning On very hot days, open the windows long enough to let hot inside air escape. Your system has three air conditioning settings: & (Maximum A/C): Use for maximum cooling or quick cool-down on very hot days. This setting will not operate when outside temperatures are below 40°F (5°C).

A/C) : Use for normal

-(Normal ’ caoling on hot days. This setting brings in outside air, cools it, and directs it through the instrument panel outlets.

(Bi-Level): This setting brings in outside air, cools it, and directs it in two ways-through the instrument panel outlets, as well 9s-t.bough the heater ducts. For each air conditioning setting, adjust the temperature control lever and f a n speed as desired.

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Heating and VentMion In these settings, the air conditioner compressor doesn't run. Outside air enters the vehicle as indicated. For each setting, adjust the temperature control lever and -fan speed as desired. 4 (Vent): In this setting, outside air flows through the instrument panel outlets. *A (Hwt): .In this setting, most air flows through heater ducts near the floor. Some air will also flow through the defroster vents. If your vehicle has an engine block heater and you use it during cold weather, 0°F (-18°C) or lower, your heating system will more quickly provide ,heat because the engine coolant is already warmed. See the Index under Engine Block Heater.

Defogging and Defrosting YoUr vehicle has two settings for clearing your windows. The-air conditioner compressor will run in both of these settings to remove moisture from the air when the temperature is above freezing. For each setting, adjust the temperature control lever and fan speed as desired. (@ (Defrost): This setting directs 90% of the air through the windshield defroster vents and the side window vents, and 10% though the floor heater ducts.

To defrost the windshield, slide the temperature control lever to the far right, press the (@ button, and adjust the fan to the highest speed. For rapid defrosting, 90% of the air will be directed to the windshield and side window vents.

Comfort Controls & Audio Systems

Defogging and Defrosting ( c o w -2. Pressing these two buttons at the same time allows most air to flow to the floor heater ducts,

with some going to the windshield and side window vents located in the windshield pillars. Use this setting to warm passengers while keeping the windshield clear.

To quickly defog the side windows, slide the temperature control lever to

the far right, press the -2 button, and

adjust the fan to the highest speed. Aim the side vents toward the side windows. For increased air flow from the side vents, close the center vents. Pressing both the *A and buttons at the same time will direct air through both the defroster and heater outlets.

Rear Window Defogger (COUPE AND HARDTOP CONVERTIBLE) The rear window defogger uses a warming grid to remove fog from the rear window. It also warms the power mirrors.

(Rear Window Defogger): Press this button to turn the defogger on. The defogger will return to OFF automatically after about 10 minutes of use. You can also turn the defogger off by turning off the ignition or by pressing the The rear window defogger operates only when the engine is running.

button again.

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Do not attach a temporary vehicle ficense across the defogger grid .on the rear window.

Power Mirror Defogger 4 (Power ,Mirror Defogger): Press (COW€RT/BLE WITHOUT HARDTOP)

this buttqn to warm and defog the power mirrors. The power mirror defugger will turn off automatically after about 10 minutes .of usei You can also turn the defogger off the 4 but'ton again. by turning off the-ignition or by pressing

The power mirror defogger operates only-when the engine is running.

SpecMy Tieated Windshield (ZR- 7) Yolar ZR-1 windshield is specially treated to reduce the amount of solar heat entering your vehicle. This makes it easier for your air conilitioning system to keep you comfortable. The specially treated windshield will decrease the effective distance of some add-on electronic devices, such as garage door openers. If you use such a device, aim it through the opening at the bottom center of the windshield.

Comfort Controls & Audio Systems

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Automutic Ekctronic Climate Control (OPTION) With this system, you can control the ventilation, heating and air conditioning in your vehicle, or you can use the automatic setting. Your vehicle also has the flow-through ventilation system described later in this section. The digital screen displays the outside temperature, the inside temperature setting, and the fan speed. If the inside temperature is changed, or if the system is changed from OFF to any mode, the inside temperature setting will be displayed for several seconds before the outside temperature is again displayed. The air conditioner compressor operates in all air conditioning positions, and in

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(@ (Defrost) when the outside temperature is above freezing. When the air conditioner is on, you may sometimes notice slight changes in your vehicle's engine speed and power. This is normal, because the Automatic EIectronic Climate Control system is designed to cycle the compressor on and off to keep the desired cooling and to help your vehicle's fuel economy. TEMP SET: This control sets the interior temperature you want. Press V to lower the inside temperature setting; press A to raise the setting. The temperature you set will be displayed on the digital screen. Once you set the temperature you want, the system will try to maintain this

temperature, whether you are using the heating or the cooling controls. However, if you set the temperature for 60°F (16°C) or 90°F (3Z°C), the fan will stay on 3p udess you select a different speed. Your Automatic Electronic Climate Control system has three sensors. The sun load sensor on top of the dashboard detects increased interior temperature caused by sunlight. To keep you comfortable, it reduces the interior temperature by as much as 5°F (3°C) below the setting on the digital screen. The outside air temperature sensor, located on the right side of the upper radiator support in the grille opening, reads the outside temperature. This is what you usually see on the display.

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The outside ternperatufe sensor reading is filtered (to minimize false readings) as follows: If- the outside temperature decreases, the -&splayed temperature will update immediately. I€- the outside temperature increases (such as when stopped in traffic), the displayed temperature will not update until one of the following eonditiom is met:

Vehicle speed is above 25 mph (40 ,nn/h) for at least 3 minutes, or Vehicle speed 'is above 45 mph (72 krn/h) for 1% minutes.

Updates will occur continuously as long as the vehicle speed remains above 25 mph (40 W h ) . zf the ignition is turned off for more than three hours, the current outside air tempepature when the vehicle is restarted will be stored in the system immediately. The third sensor is the in-vehicle tempefature sensor, located in-the center air outlet on the passenger side. If you block or cover either interior sensor, the sensor will give your system a false reading.

AUTO (Automatic): This system autmnatically adjusts to the temperature range you select. rt stays at. this temperature with the least possible noise level and it will select the best mode (Heater, Air Conditioning or Bi-Level) and fm speed to keep you comfortable. The fan blower will vary its speed automatically unless you ovenide it with theVqrAbutton,

Set the temperature you want with the TEMP SET switch.

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2. Press AUTO. An indicator light will glow above this.hutton. 3. Press A (Vent) to allow outside. air to flaw into the vehicle.

Comfort Controls & Audio Systems

Automutic Electrunic Climate Cuntvul (C0nt.j Use These Settings to Set Your Fan Speed V (Lqw.Ean): 'This. setting overrides. the automatic fan speed. To decrease fan speed, press the V button and hold until you see the fan speed you want. AUTO # (Automatic Fan): when you use this setting, the controller chooses the fan speed based on the mode input signals. In the AUTO during hot weather (after the vehicle has not been running for a period of time) the-fan speed will be low when the vehicle is initially started. This I42

initial low fan speed is used to purge the vehicle of hot interior air. In the

AUTO 3f mode during cold weather,

the fan speed will be delayed. in the heat mode until the engine coolant reaches an adequate temperature to provide heat. A (High .Fan) : This setting overrides the automatic fan speed. To increase fan speed, press the A button and hold until you see the fan speed you want. There is no €an blower delay. Fan speeds wil1 range from 1 (lowest setting) to 10 (highest setting). When any fan speed is selected, it will appear on the digital screen briefly and the ot~tside temperature will also appear.

Air Conditioning System If a light above a button flashes when you turn on the ignition, it may indicate an electrical problem with your air conditioning system. The flashing will continue for one minute, then go but. It means you should have your system checked and serviced if needed. It may also mean the rekigerant level is too low in your air conditioner system. The. light will still flash after rebigerant is added. This means your system will not cool the air until it is reset.

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To Reset Your System: 1. Turn your ignition.lrey to Off or

Lock.

2. Pull the Courtesy Lights Fuse and

Radio Fuse .out of the- main fuse panel for one minute.

3. Put-the fuses back in and start your

vehicle. Your system shuuld be working. If you still have a problem, see your deder,

.For fuse location, see the Index under Fuses E. CircuitBreakers and Fuse .Panel.

Directional Controls When the €allowing buttons are pressed, an indicator light. will glow above .the button and the fan speed will go to

AUTO 3f unless you select a dBerent

speed. When the system is'changed €rum OFF tu any mode, the inside temperature setting is displayed for several seconds before the .outside temperature is again displayed. & (Maximum A/C): Use for maximum cooling or quick cool-down on very hot days.. This setting will not operate when outside temperatures are below 40°F (5°C)

-2 (Bi-Level): This setting lets air

inte the vehicle only through the .heater and air conditioner outlets and brings.the temperature to the range you choose. It controls the fan blower speed by using t-he input signals. Bi-Level al.so defogs the side windows, You can. override the,fan blower speed by using the V and A buttons. a ( V e n t ) : In this setting, the compressor will not. mn. The-system will adju-st to the temperature you choose, but it cannot cool the vehicle to a temperature colder than the outside air temperature, This setting

Comfort Controls & Audio Systems

Directional Controls (CONT.) also controls the fan speed -automaticallyy, unless the fan is overridden by the 7 or A button. 'YJJ(Heater): In this setting, all air coming into the vehicle. is forced to the floor. The fan blower motor will vary in speed unless yowpress the Vur A button. The in-car temperature will adjust to the setting you choose. The air conditioning compressor will not. run in the manual heater mode. If .your vehicle has an engine block heater and you.use .it during cold weather, UoF (-18°C) or lower, your heating system will .more quickly provide heat became the engine coolant is already warmed. See the Index under Engine Bluck Heater. 44

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(Defrost): With this setting, mast of the air is forced. through the windshield defroster vents. The cornpressor runs by using all the input signals. The fan blower also .goes to a fixed high speed with no delay. After start-up you can override the High fan blower speed by pushing or AUTO. DEFOG: Press the buttons at the same time to operate the defog mode. This directs warmed air through the windshield defroster vents, and through the heater ducts. OFF: Press to turn off the system.

and (@'

Rear Window Defogger (COUPE AND HARDTOP CONVERTlBLE)

a (Rear Window Defogger) :Press

this button to warm the defogger grid on the rear window and warm the power mirrors. The indicator light will glow while the rear window defogger is operating. If you have a convertible, you. will have the 4 (Power Mirror Defogger) button .on your climate control system. This button is for heated mirrors only. The -rear window defogger will turn:off automatically after. about 10 minutes. of use, You can also- turn the defogger off by turning off the ignition or by pressing the @ button again.

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The rear window defogger and power window defogger .ody aperate when the ' engine is r u ~ g . Do pot attach a temparary vehicke license across the defogger grid on the, rear window.

Flow-Throuflh Ventilation System Your corvette's flow-through ventilation system supplies outside air into the vehicle when it is moving. Outside air will also enter the vehicle when the heater or the air conditioning fan is m a g .

Ventilation Tips

work far better,

Kkp the hood and €rant air inlet free -of ice, snow, or any other obstruction (such as leaves). The heater and. defroster d l reducing the chance of fogging the inside of y o u windows. When you enter a vehicle in cold weather, turn the blower fan to the highest speed f6r.a few moments before driving off. This helps clear the intake ducts of 'snow and moisture, .and reduces the chance of fogging the inside a€ your windows. Keep the air path u,nder the frwt . seats clear of objects. This- helps air to circulate t.hroughout your vehicle. See the Ind& under Engim? Exhaust.

Comfort Controls & Audio Systems

The following .pages describe the audio systems available for your Corvette, and how to get the best performance from them.. Please read about ,the system in your vehicle.

CAUTION I A Hearing damage from loud

noise is almost undetectable until it is too late. Your hearing can adapt to. higher volumes of sound. Sound that s-eems normal.can-be loud and harmful to your hearing. Take precautions by adjusting the volume control on your radio to-a. safe sound level before yaur hearing adapts to it. To help avoid hearing loss OK damage: 1. Adjust the volume control to the

lowest setting.

2. Increase volume slowly until you

hear comfortably and clearly.

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Comfort Controls & Audio Systems

Accessory Wiring Plug (CONTJ This Wiring Plug has Three Separate Wires:

The orange wire connects to the battery. The pink wire connects to the ignition (power is only available in the Run position). The black wire connects to the ground.

When.using $he.accessory wiring .plug:

Don't splice wires -directly into the accessory plug wire. If done incmrectly, splicing might cause damage.to p u r electrical system. The maximum bad dany electric,al,equipment..shauld.not exceed I15 amps, . .Be sure to turn off any electricai equipment when-not-in use.. Leaving electrical equipment on €or extended periods ..can drain your battery. Do not use this plug if the electrical equipment you're using requires frequent connecting and disconnecting. This may cause excessive wear on the accessory plug and damage your eiectricai system.

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ietting the Clock ietting the cloclc is easy. , With the radio on or off and the ignition on, press SET. The SET indicator light will glow for five seconds. !. You must begin to set the clock to the correct hour and minute during those five seconds. Set the clock by pressing the TUNE button. TUNE 7 will set the hour. TUNE A sets the minute.

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IMjFM Stereo wjth Cassette 'layer qOL/PROG/RCL Turns the unit on md off when the ignition is on. Idjusts volume up or down. BAIJFADE: Turn the inside control mob to adjust the sound from the left :o the right speakers. rum the control ring to adjust the bund from the front to the rear ;peakem.

Radio Controls: The digital display indicates infomation on time or radio stationfrequency, the AM or FM radio band, whether the station is in stereo, and other radio functions. AMEM: Press this button to select either the AM or FM radio band. The band you select will be displayed on the digital screen. The frequency of the station will be displayed, and if the station is in stereo, the ST indicator will also be displayed.

RCL (Recall): Press to change between the clock or the radio station frequency displayed on the digital screen. AUTO: Press this button, then press TUNE to tune to the next station on the AM or FM band. An indicator light above a preset station button will glow when the seek mode stops at that station.

Comfort Controls & Audio Systems

AMlFM Stereo with Cassette PIayer (cum) TUNE. Press this control to tune in. stations higher or lower on the AM.or FM radio band. For rapid tuning, press and hold one side of.TUNE., then:press the other side. The display will revert to time if the tuning activity has ceased for approximately five sec0nd.s. BASWXREB (Treble): The inside knob adjusts the bass level up or down. The autside ring;adjQsts the treble level up or down.

To Preset Radio Stations: The six numbered- pushbuttons can be. used to preset up to twelve-radio stations (six AM -and six FM stati.ons). 1. Tune in the desired station. 2, Press SET. The SET indicator light

will glow.

3. While the SET indicator. light- glows, press one. of the six pushbuttons. Whenever you press this button again, the preset station will be tuned in. 4. Repeat steps 1-3 -for each of six AM

and six FM stations,

To Play a Cassette Tape: This audio system has automatic. on Dolby B NR@- to reduce background noise. on Dolby encoded tapes. Dolby" Noise Re:du.ction is manufactured under license from Dolby Laboratories Licensing Corporation. Dolby@ and the 00 symbol are trademarks of Dolby Laboratories Licensing Corporation. Turn the VOL 1Znd.b.ts turn the radio on. Then push a Cassetteinto the cassette entry door (the tape side goes in :first). Do not use tapes-that are loQger- than 45 minutes on each,:side. The display will indicate CA IN when a cassette tape is in tkplayer.

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FF (Fast Forward): Press to advance the tape rapidly; press again to play. (The radio plays while the tape is fast forwarding.) The indicator light will glow when this button is pressed. REV (Reverse): Press to reverse the tape rapidly; press again to play. (The radio plays while the tape is rewinding.) The indicator light will glow when this button is pressed. CrO,: Press this button when playing high bias chrome or metal tapes. An indicator light will glow when this button is pressed. When playing standard tapes, press again.

PROG (Program) : Press to change the side of the tape being played. Arrows in the display will indicate the side currently playing. The tape player automatically begins playing the other side of the cassette when it reaches the end of a tape. SRCH (Search): Press to search for the next selection on the tape. There must be at least a three-second gap between selections on the tape for this function to work. An indicator light will glow when this button is pressed. SCAN: Press to listen to the beginning eight seconds of each track or passage. To stop scanning, press SCAN again; the indicator light will go out and the tape will continue to play.

REPT (Repeat): Press to return to the beginning of the current selection after 10 seconds or more of play. After 10 seconds or less of play, the player will return to the beginning of the previous selection. EJCT (Eject): Press to have the cassette tape ejected (the radio will then play). This button will also work when the radio or ignition are turned Off. STOPIPLAY: Press this to listen to the radio without ejecting the cassette.

Comfort Controls & Audio Systems

AMIFIW Stereo wifh Cassette Player (Delco-Bose@ Music System) VOL/PRBG/R@L: Turns the unit on and o€€ when the ignition is on. Adjusts volume up or down. FADE: Adjusts the fronthear speaker balance. There is no control to adjust for le€t/right speaker balance because none is required.

Radio Controls: The digital display indicates information on time or radio station frequency, the AM or FM radio band, whether the station is in stereo, and other radio functions. AM/FM: Press this button to select either the AM or FM radio band. The band you select will be displayed on the digital screen. The frequency of the station will also be displayed, and if the station is in stereo, the ST indicator will also be displayed.

Your radio has an AMAX-certified receiver. It can produce quality AM stereo sound and receive C-Quam@ stereo broadcasts. AMAX reduces noise without reducing the high frequencies you need for the best sound. You don't have to do anything to your Delco/GM radio because AMAX is automatic. RCL (Recall): Press to change between the clock or the radio station frequency displayed on the digital screen. AUTO: Press this button, then press TUNE to tune to the next station on the AM or FM band. An indicator light above a preset station button will glow when the seek mode stops at that station.

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TUNE: Press this control to tune in stations higher d o w e r on the AM or %M radio b-and. For rapid tuning, press and hold one side of TUNE, theirpress the other side. The di-splay will revert to time if the tuning -activity has ceased for approximately five seconds. BASS/TREB (Treblej: -The. inside knob adjusts the bass .level up or down. The outside rin,g adjusts the treble ievel up or down.

To Preset Radio Stations: The six numbered pushbuttons can be used to preset-up to twelve Eadio,. stations (six AM a d six FM.stations). 1. Tune in the desired station. 2. Press SET. The SET indicator light

will glow.

3. While the SET indicator light glows,

press one of the six .pushbuttons. Whenever you.press this button again, the preset station will 'be tuned in.

4. Repeat steps 1-3 for each of six AM

and six FM stations.

To Play a Cassette Tape: TGs audio system has automatic UI Ddby B NR@ to reduce backpurid noise on Dolby encoded tapes* Dolby@ Noise Redudtion is.manufactwed under license f r ~ m Dolby Laboratories Licensing Corporation. Dolby" and the 00 symbol are trademarks of Dolby Laboratories Licensing- Corporation. Turn the.VOL knob to. turn t.he fadio: on. Then push a cassette into the cassette entry door (the tape side goes in first).. Do not use tapes that .are longer than 45 minutes on each side. The, display will indicate CA IN when a cassette tape.& in the player.

Comfort Controls & Audio Systems

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AMIFM Stereo with Cassette Player (Delco-Bose@ Music System) ~conrr.) FF (Fast Forward): Press to advance the tape rapidly; press again to play. (The radio plays while the tape is fast forwarding.) The indicator light will glow when this button is pressed. REV (Reverse): Press to reverse the tape rapidly; press again to play. (The radio plays while the tape is rewinding.) The indicator light will glow when this button is pressed. CrO,: Press this button when playing high bias chrome or metal tapes. An indicator light will glow when this button is pressed. When playing standard tapes, press again.

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PROG (Program): Press to change the side of the tape being played. Arrows in the display will indicate the side currently playing. The tape player automatically begins playing the other side of the cass-ettg. W&n it xeahez, the end of a tape. SRCH (Search): Press to search for the next selection on the tape. There must be at least a three-second gap between selections on the tape for this function to work. An indicator light will glow when this button is pressed. SCAN: Press to listen to the beginning eight seconds of each track or passage. To stop scanning, press SCAN again; the indicator light will go out and the tape will continue to play.

REPT (Repeat): Press to return to ' the beginning of the current selection after 10 seconds or more of play. After 10 seconds or less of play, the player will return to the beginning of the previous selection. EJCT (Eject): Press to have the cassette tape ejected (the radio will then play). This button wilI also work when the radio or ignition are turned off. STOP/PLAY: Press this to listen to the radio without ejecting the cassette.

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FADE Adjusts the fronthear speaker balance. There is no control to adjust for left/right speaker balance because none is required.

I AMIFM Stereo with CassettelCD Player (Delco-Bose@ Musk System) SCV/VOL: The inside lcnob turns the unit on and off when the ignition is on and adjusts volume up or down. SCV (Speed-Compensated Volume): This three-position control ring will automatically compensate for the increase in road noise levels at higher speeds. At normal driving speed, set the volume control as desired. Switching to L (Low) or H (High) causes the volume to increase as your speed increases.

The high position will give you a higher maximum volume than the low position. The high position will also increase the volume faster. Use the low position when driving with the roof panel on, or the convertible top up and the windows closed. The high position is best when driving with the roof panel off, or the convertible top down and the windows open. SCV will be indicated on the display when on. This feature can be turned off by turning the control ring to the OFF position.

Comfort Controls & Audio Systems

AMIFM Stereo with CassettelCD Player (Delco-Bose@ Music System) (CONT.) Radio Contro~s: -The digitd display indicates information on- time or radio station frequency, the AM or FM radio- band, whether the station is in stereo, and other radio functions.. AMtFM: Press this button to select either -the AM OF FM radio- band. The band you -select-will be displayed on the digital screen. The frequency -of the station will also be displayed, and if the station is in. stereo, ST will-:also be displayed. Y w r radio has an AMAX-certified .receiver. .It can produce quality AM stereo sound and receive C-Qu.am@ stereo broadcasts. AMAX reduces noise with0u.t reducing the high frequencies. you need for the best sound. You don't Jiave,to do anything to your Delco/GM radio because. AMAX is automatic. 156

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RCL (Recall): Press to change between the clock or the radio station frequency displayed on the digital screen. AUTO: Press this button, then press TUNE to tune to the next station on