2012 Chevrolet Corvette Owners Manual

from the filter before disposal. Never dispose of oil by putting it in the trash or pouring it on the ground, into sewers, or into streams or bodies of water. Recycle it by taking it to a place that collects used oil.

Vehicle Care

10-19

Engine Oil Life System

When to Change Engine Oil This vehicle has a computer that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles driven. Based on driving conditions, the mileage at which an oil change is indicated can vary considerably. For the oil life system to work properly, the system must be reset every time the oil is changed. Z06, ZR1, and Grand Sport models have a racetrack‐ready dry sump engine lubrication system. This high‐performance system operates differently than a standard engine lubrication system and requires a special procedure when changing the engine oil and filter. See Engine Oil on page 10‑14.

Chevrolet Corvette Owner Manual - 2012

Black plate (20,1)

10-20

Vehicle Care

When the system has calculated that oil life has been diminished, it indicates that an oil change is necessary. A CHANGE ENGINE OIL message comes on. Change the oil as soon as possible within the next 1 000 km (600 mi). It is possible that, if driving under the best conditions, the oil life system might indicate that an oil change is not necessary for up to a year. The engine oil and filter must be changed at least once a year and, at this time, the system must be reset. Your dealer has trained service people who will perform this work and reset the system. It is also important to check the oil regularly over the course of an oil drain interval and keep it at the proper level. If the system is ever reset accidentally, the oil must be changed at 5 000 km (3,000 mi) since the last oil change. Remember to reset the oil life system whenever the oil is changed.

How to Reset the Engine Oil Life System Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change. To reset the system: 1. Press the TRIP button so

the OIL LIFE percentage is displayed.

2. Press RESET and hold for

two seconds. OIL LIFE REMAINING 100% will appear.

If the CHANGE ENGINE OIL message comes back on when the vehicle is started, the engine oil life system has not reset. Repeat the procedure.

Automatic Transmission Fluid

How to Check Automatic Transmission Fluid It is not necessary to check the transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to the dealer and have it repaired as soon as possible. The vehicle is not equipped with a transmission fluid level dipstick. There is a special procedure for checking and changing the transmission fluid. Because this procedure is difficult, this should be done at the dealer. Contact the dealer for additional information or the procedure can be found in the service manual. To purchase a service manual, see Service Publications Ordering Information on page 13‑18.

Chevrolet Corvette Owner Manual - 2012

Black plate (21,1)

Notice: Use of the incorrect automatic transmission fluid may damage the vehicle, and the damages may not be covered by the vehicle warranty. Always use the automatic transmission fluid listed in Recommended Fluids and Lubricants on page 11‑12. Change the fluid and filter at the intervals listed in Maintenance Schedule on page 11‑3, and be sure to use the fluid listed in Recommended Fluids and Lubricants on page 11‑12.

Manual Transmission Fluid It is not necessary to check the manual transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to the dealer and have it repaired as soon as possible. See Recommended Fluids and Lubricants on page 11‑12
for the proper fluid to use.

Hydraulic Clutch It is not necessary to regularly check clutch fluid unless you suspect there is a leak in the system. Adding fluid will not correct a leak. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. When to Check and What to Use

The hydraulic clutch fluid reservoir cap has this symbol on it. See Engine Compartment Overview on page 10‑8 for reservoir location.

Vehicle Care

10-21

Refer to the Maintenance Schedule for the proper fluid to use. See Recommended Fluids and Lubricants on page 11‑12. The fluid requires changing every two years. See Maintenance Schedule on page 11‑3. How to Check and Add Fluid Visually check the clutch fluid reservoir to make sure the fluid level is at the MIN (minimum) line on the side of the reservoir. The hydraulic clutch fluid system should be closed and sealed. Do not remove the cap to check the fluid level or to top‐off the fluid level. Remove the cap only when necessary to add the proper fluid until the level reaches the MIN line.

Chevrolet Corvette Owner Manual - 2012

Black plate (22,1)

10-22

Vehicle Care

Engine Air Cleaner/Filter See Engine Compartment Overview on page 10‑8 for the location of the engine air cleaner/filter. Notice: If you spray water into the engine air cleaner/filter intake and water enters the engine air cleaner/filter housing, you could damage your vehicle's engine. The repairs would not be covered by your warranty. Do not spray water into the engine air cleaner/ filter intake and/or housing. If cleaning the vehicle with the hood open, take care not to spray water directly near the filter opening of the air cleaner, as shown in the illustration, as this could damage the vehicle's engine.

When to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/filter at the scheduled maintenance intervals and replace them at the first oil change after each 80 000 km (50,000 mi) interval. See Maintenance Schedule on page 11‑3 for more information. If driving in dusty/dirty conditions, inspect the filter at each engine oil change.

How to Inspect the Engine Air Cleaner/Filter To inspect the air cleaner/filter, remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains covered with dirt, a new filter is required.

To inspect or replace the engine air cleaner/filter: 1. Open the hood. See Hood on

page 10‑7.

6.2 L V8 Engine LS3 Shown,

6.2 L V8 Engine LS9 and

7.0 L V8 Engine LS7 Similar A. Tube B. Clamp C. Duct

2. Remove the tube (A) from the

air cleaner assembly.

Chevrolet Corvette Owner Manual - 2012

Black plate (23,1)

3. Loosen the clamp (B) at the throttle body and remove the duct (C).

5. Press on the top and bottom of

the mass air flow sensor connector (A) and remove.

Vehicle Care

10-23

6.2 L V8 Engine LS3

6.2 L V8 Engine LS3 Shown,

6.2 L V8 Engine LS9 and

7.0 L V8 Engine LS7 Similar A. Mass Air Flow Sensor

Connector

B. Connector Lock

4. Remove the connector lock (B)

located at the bottom of the mass air flow sensor connector (A).

6.2 L V8 Engine LS9 Shown, 7.0 L V8 Engine LS7 Similar

6. To access the air filter element,

gently pull the air cleaner assembly upward until the fasteners are released from the retainer pins in the upper radiator support. The LS3 engine has three retainer pins and the LS7 and LS9 engines have two.

Chevrolet Corvette Owner Manual - 2012

Black plate (24,1)

10-24

Vehicle Care

7. To remove the filter from the

LS3 and LS7 engines, remove the six screws (A) securing the filter cover (B) then pull away to gain access to the air filter (C). To remove the filter assembly from the LS9 engine, remove the six screws securing the filter cover. The filter cover and the air filter are one piece. Inspect or replace the filter or filter cover assembly. See Maintenance Replacement Parts on page 11‑14.

8.

9. Reverse Steps 2 through 7 to

replace the air cleaner/filter cover.

{ WARNING

Operating the engine with the air cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans the air; it helps to stop flames if the engine backfires. Use caution when working on the engine and do not drive with the air cleaner/filter off.

Notice: If the air cleaner/filter is off, dirt can easily get into the engine, which could damage it. Always have the air cleaner/filter in place when you are driving.

6.2 L V8 Engine LS3 Shown,

6.2 L V8 Engine LS9 and

7.0 L V8 Engine LS7 Similar A. Screw B. Filter Cover C. Filter

Chevrolet Corvette Owner Manual - 2012

Black plate (25,1)

Vehicle Care

10-25

Notice: Using coolant other than DEX-COOL® can cause premature engine, heater core, or radiator corrosion. In addition, the engine coolant could require changing sooner, at 50 000 km (30,000 mi) or 24 months, whichever occurs first. Any repairs would not be covered by the vehicle warranty. Always use DEX-COOL (silicate-free) coolant in the vehicle.

Cooling System (Engine) The cooling system allows the engine to maintain the correct working temperature.

7.0L Engine Shown, 6.2L Engine Similar

A. Electric Engine Cooling Fan B. Coolant Surge Tank with

Pressure Cap

{ WARNING

An electric engine cooling fan under the hood can start up even when the engine is not running and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan.

{ WARNING

Heater and radiator hoses, and other engine parts, can be very hot. Do not touch them. If you do, you can be burned. Do not run the engine if there is a leak. If you run the engine, it could lose all coolant. That could cause an engine fire, and you could be burned. Get any leak fixed before you drive the vehicle.

Chevrolet Corvette Owner Manual - 2012

Black plate (26,1)

10-26

Vehicle Care

Cooling System (Intercooler) The 6.2L LS9 supercharged V8 engine has an intercooler cooling system. See Engine Compartment Overview on page 10‑8 for location of the intercooler. The intercooler cooling system has a special procedure for draining and adding coolant. Because this procedure is difficult, see the dealer for service if the intercooler is low on coolant. The procedure can also be found in the service manual. To purchase a service manual, see Service Publications Ordering Information on page 13‑18.

Checking Coolant

1. Verify that the engine and

intercooler are no longer hot.

2. Place a cloth to absorb possible

coolant loss under the driver's side bleeder valve (A).

3. Loosen, but do not completely

unscrew the bleeder valve to check for coolant in the system.

4. Tighten the bleeder valve if there

5.

is coolant flowing out of the bleeder valve. If there is no coolant flowing out of the bleeder valve, there could be a leak in the system. Tighten the bleeder valve and contact the dealer for service.

Engine Coolant The cooling system in the vehicle is filled with DEX-COOL® engine coolant. This coolant is designed to remain in the vehicle for 5 years or 240 000 km (150,000 mi), whichever occurs first. The following explains the cooling system and how to check and add coolant when it is low. If there is a problem with engine overheating, see Engine Overheating on page 10‑30.

Chevrolet Corvette Owner Manual - 2012

Black plate (27,1)

What to Use

{ WARNING

Adding only plain water or some other liquid to the cooling system can be dangerous. Plain water and other liquids, can boil before the proper coolant mixture will. The vehicle's coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, the engine could get too hot but you would not get the overheat warning. The engine could catch fire and you or others could be burned. Use a 50/50 mixture of clean, drinkable water and DEX-COOL coolant.

Use a 50/50 mixture of clean, drinkable water and DEX-COOL coolant. If using this mixture, nothing else needs to be added. This mixture: . Gives freezing protection down

to −37°C (−34°F), outside temperature.

. Gives boiling protection

up to 129°C (265°F), engine temperature.

. Protects against rust and

corrosion.

. Will not damage aluminum parts. . Helps keep the proper engine

temperature.

Notice: If an improper coolant mixture is used, the engine could overheat and be badly damaged. The repair cost would not be covered by the vehicle warranty. Too much water in the mixture can freeze and crack the engine, radiator, heater core, and other parts.

Vehicle Care

10-27

Notice: If extra inhibitors and/or additives are used in the vehicle cooling system, the vehicle could be damaged. Use only the proper mixture of the engine coolant listed in this manual for the cooling system. See Recommended Fluids and Lubricants on page 11‑12 for more information. Never dispose of engine coolant by putting it in the trash, pouring it on the ground, or into sewers, streams, or bodies of water. Have the coolant changed by an authorized service center, familiar with legal requirements regarding used coolant disposal. This will help protect the environment and your health.

Chevrolet Corvette Owner Manual - 2012

Black plate (28,1)

10-28

Vehicle Care

Checking Coolant The vehicle must be on a level surface when checking the coolant level. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down. If coolant is visible but the coolant level is not at or above the FULL COLD mark, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant at the coolant recovery tank, but be sure the cooling system is cool before this is done. See Engine Coolant on page 10‑26 for more information.

How to Add Coolant to the Coolant Surge Tank

{ WARNING

You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol and it will burn if the engine parts are hot enough. Do not spill coolant on a hot engine.

{ WARNING

Steam and scalding liquids from a hot cooling system can blow out and burn you badly. They are under pressure, and if you turn the coolant surge tank pressure cap — even a little — they can come out at high speed.

(Continued)

The engine coolant surge tank is located toward the rear of the engine compartment on the driver side of the vehicle. See Engine Compartment Overview on page 10‑8 for more information on location. When the engine is cold, the coolant level should be at the FULL COLD mark on the coolant surge tank. When the engine is hot, the level could be higher than the FULL COLD line. If the coolant is below the FULL COLD line when the engine is hot, there could be a leak in the cooling system. If the coolant is low, add the coolant or take the vehicle to a dealer for service.

Chevrolet Corvette Owner Manual - 2012

Black plate (29,1)

Vehicle Care

10-29

WARNING (Continued)

Never turn the cap when the cooling system, including the coolant surge tank pressure cap, is hot. Wait for the cooling system and coolant surge tank pressure cap to cool if you ever have to turn the pressure cap.

If coolant is needed, add the proper DEX-COOL coolant mixture directly to the surge tank, but be sure the cooling system is cool before this is done.

3. Fill the coolant surge tank with the proper DEX-COOL coolant mixture until the level inside stabilizes at the FULL COLD mark on the front of the surge tank.

1. When the cooling system,

including the coolant surge tank pressure cap and upper radiator hose, is no longer hot, remove the pressure cap. Turn the pressure cap slowly counterclockwise about one-quarter turn and then stop. If a hiss is heard, wait for that to stop. A hiss means there is still some pressure left.

2. Keep turning the pressure cap

slowly, and remove it.

Chevrolet Corvette Owner Manual - 2012

Black plate (30,1)

10-30

Vehicle Care

mixture to the coolant surge tank until the level stabilizes at the FULL COLD mark on the coolant surge tank.

5. Replace the pressure cap. Be sure the pressure cap is hand-tight and fully seated. Check the level in the surge tank when the system has cooled down. If the coolant is not at the proper level, repeat Steps 1
through 4, then reinstall the pressure cap. If the coolant is not at the proper level when the system cools down again, see the dealer.

Notice: If the pressure cap is not tightly installed, coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured.

Engine Overheating The vehicle has several indicators to warn of engine overheating. There is an engine coolant temperature gauge on the instrument panel cluster. See Engine Coolant Temperature Gauge on page 5‑16. The vehicle may also display a COOLANT OVER TEMPERATURE message on the Driver Information Center (DIC). See Engine Cooling System Messages on page 5‑39
for more information. If the decision is made not to lift the hood but to get service help right away. See Roadside Assistance Program (U.S. and Canada) on page 13‑8 or Roadside Assistance Program (Mexico) on page 13‑10. If the decision is made to lift the hood, make sure the vehicle is parked on a level surface.

4. With the coolant surge tank

pressure cap off, start the engine and let it run until the upper radiator hose can be felt getting hot. Any time during this procedure, watch out for the engine cooling fan. By this time, the coolant level inside the coolant surge tank may be lower. If the level is lower, add more of the proper

Chevrolet Corvette Owner Manual - 2012

Black plate (31,1)

Then check to see if the engine cooling fan is running. If the engine is overheating, the fan should be running. If it is not, do not continue to run the engine and have the vehicle serviced. Notice: Engine damage from running your engine without coolant is not covered by the vehicle warranty. See Overheated Engine Protection Operating Mode for information on driving to a safe place in an emergency. Notice: If the engine catches fire while driving with no coolant, the vehicle can be badly damaged. The costly repairs would not be covered by the vehicle warranty. See Overheated Engine Protection Operating Mode on page 10‑32 for information on driving to a safe place in an emergency.

If Steam is Coming from the Engine

{ WARNING

Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Turn it off and get everyone away from the vehicle until it cools down. Wait until there is no sign of steam or coolant before you open the hood. If you keep driving when the vehicles engine is overheated, the liquids in it can catch fire. You or others could be badly burned. Stop the engine if it overheats, and get out of the vehicle until the engine is cool.

(Continued)

Vehicle Care

10-31

WARNING (Continued)

See Overheated Engine Protection Operating Mode on page 10‑32 for information on driving to a safe place in an emergency.

If No Steam is Coming from the Engine If an engine overheat warning is displayed but no steam can be seen or heard, the problem may not be too serious. Sometimes the engine can get a little too hot when the vehicle: . Climbs a long hill on a hot day . Stops after high-speed driving Idles for long periods in traffic

Chevrolet Corvette Owner Manual - 2012

Black plate (32,1)

10-32

Vehicle Care

If the overheat warning is displayed with no sign of steam: 1. Turn the air conditioning off. 2. Turn the heater on to the highest

3.

temperature and to the highest fan speed. Open the windows as necessary. If in a traffic jam, shift to N (Neutral) while stopped. If it is safe to do so, pull off the road, shift to P (Park) or N (Neutral) and let the engine idle.

If the temperature overheat gauge is no longer in the overheat zone or an overheat warning no longer displays, the vehicle can be driven. Continue to drive the vehicle slowly for about 10 minutes. Keep a safe vehicle distance from the vehicle in front. If the warning does not come back on, continue to drive normally. If the warning continues, pull over, stop, and park the vehicle right away.

If there is no sign of steam, idle the engine for three minutes while parked. If the warning is still displayed, turn off the engine until it cools down. Also, see “Overheated Engine Protection Operating Mode” next in this section.

Overheated Engine Protection Operating Mode This emergency operating mode lets the vehicle be driven to a safe place, up to 80 km (50 mi), in an emergency situation. If an overheated engine condition exists and the messages COOLANT OVER TEMPERATURE and REDUCED ENGINE POWER are displayed, along with the check engine light, an overheat protection mode which alternates firing groups of cylinders helps prevent engine damage. In this mode, there is a significant loss in power and engine performance.

Driving extended distances in the overheat protection mode should be avoided. Notice: After driving in the overheated engine protection operating mode, to avoid engine damage, allow the engine to cool before attempting any repair. The engine oil will be severely degraded. Repair the cause of coolant loss, change the oil and reset the oil life system. See Engine Oil on page 10‑14.

Power Steering Fluid

See Engine Compartment Overview on page 10‑8 for reservoir location.

Chevrolet Corvette Owner Manual - 2012

Black plate (33,1)

When to Check Power Steering Fluid It is not necessary to regularly check power steering fluid unless there is a leak suspected in the system or an unusual noise is heard. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. How to Check Power Steering Fluid Notice: Extremely small amounts of contamination can cause steering system damage and cause it to not work properly. Do not allow contaminants to contact the fluid side of the reservoir cap/dipstick or to enter the reservoir. To check the power steering fluid: 1. Turn the ignition off and let the

engine compartment cool down. 2. Wipe the cap and the top of the

reservoir clean.

3. Unscrew the cap and wipe the

dipstick with a clean rag.

4. Replace the cap and completely

tighten it.

5. Remove the cap again and look at the fluid level on the dipstick. There are markings on both sides of the dipstick.

The level should be at the FULL COLD mark. If necessary, add only enough fluid to bring the level up to the mark.

Vehicle Care

10-33

When the engine compartment is cool, the level should be at the FULL COLD mark. What to Use To determine what kind of fluid to use, see Recommended Fluids and Lubricants on page 11‑12. Always use the proper fluid. Notice: Use of the incorrect fluid may damage the vehicle and the damages may not be covered by the vehicle's warranty. Always use the correct fluid listed in Recommended Fluids and Lubricants on page 11‑12.

When the engine compartment is hot, the level should be at the HOT mark.

Chevrolet Corvette Owner Manual - 2012

Black plate (34,1)

10-34

Vehicle Care

Washer Fluid

Notice

Brakes

What to Use When the vehicle needs windshield washer fluid, be sure to read the manufacturer's instructions before use. If the vehicle will be operating in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing. Adding Washer Fluid

Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview on page 10‑8 for reservoir location.

. When using concentrated

washer fluid, follow the manufacturer's instructions for adding water.

. Do not mix water with

ready-to-use washer fluid. Water can cause the solution to freeze and damage the washer fluid tank and other parts of the washer system. Also, water does not clean as well as washer fluid.

. Fill the washer fluid tank only

three-quarters full when it is very cold. This allows for fluid expansion if freezing occurs, which could damage the tank if it is completely full.

. Do not use engine coolant

(antifreeze) in the windshield washer. It can damage the windshield washer system and paint.

Brake Wear (Except ZR1, Z06, and Grand Sport) This vehicle has disc brakes. Disc brake pads have built-in wear indicators that make a high-pitched warning sound when the brake pads are worn and new pads are needed. The sound can come and go or be heard all the time the vehicle is moving, except when applying the brake pedal firmly.

{ WARNING

The brake wear warning sound means that soon the brakes will not work well. That could lead to a crash. When the brake wear warning sound is heard, have the vehicle serviced.

Chevrolet Corvette Owner Manual - 2012

Black plate (35,1)

Notice: Continuing to drive with worn-out brake pads could result in costly brake repair. Some driving conditions or climates can cause a brake squeal when the brakes are first applied or lightly applied. This does not mean something is wrong with the brakes. Brake linings should always be replaced as complete axle sets. Brake Wear (ZR1, Z06, and Grand Sport Only) The ZR1, Z06, and Grand Sport models do not have built-in brake pad wear indicators and periodic visual inspection of the brake pads is required to determine when to replace the brake pads.

Vehicle Care

10-35

Notice: Continuing to drive with worn-out brake pads could result in costly brake repair. . Make sure that the brakes have been given sufficient time to cool and then set the park brake.

Rear

Front

. Brake pads can be visually

inspected through the wheel by inspecting the outer brake pads at each wheel.

. Brake pads should be replaced

when worn to 2 mm of pad thickness. New pads are 10 mm thick. In addition, brake pad inspection is required any time the tires are removed.

Chevrolet Corvette Owner Manual - 2012

Black plate (36,1)

10-36

Vehicle Care

Brake Rotor Protector

{ WARNING

Ceramic rotors will be very hot after operation and touching them may cause burns. Be sure brake system is completely cool prior to installation of protector, or coming in contact with them.

Notice: Rotors may be chipped if hard contact is made with the wheel during wheel installation or removal. Always use the rotor protectors. Be sure to carefully follow wheel removal and installation instructions.

Some driving conditions or climates can cause a brake squeal when the brakes are first applied or lightly applied. This does not mean something is wrong with the brakes. Brake linings should always be replaced as complete axle sets.

Brake Rotor Wear ZR1 models have, and Z06 and Grand Sport models may have, ceramic brake rotors. Rotors should be visually inspected whenever the brake pads are replaced. Rotors also need to be weighed before brake pads are replaced to confirm that the rotor mass is greater than the wear‐out mass printed on the rotor. The rotor can be reused if the weight of the rotor is above the mass limit. Rotor inspection and weighing methods can be found in the service manual. See Service Publications Ordering Information on page 13‑18.

The ZR1, Z06, and Grand Sport models also have an electronic brake pad wear sensor system. When pads are worn, the CHANGE BRAKE PADS message displays in the Driver Information Center. See Brake System Messages on page 5‑36.

Chevrolet Corvette Owner Manual - 2012

Black plate (37,1)

A rotor protector should always be installed before any wheel removal. The protector can be installed by feeding it through the wheel spokes and slipping it over the outer edge of the rotor. Leave the protector in place, over the rotor edge, until the wheel is re‐installed. Rotor protectors are available through your dealer. Brake Pedal Travel See your dealer if the brake pedal does not return to normal height, or if there is a rapid increase in pedal travel. This could be a sign that brake service might be required. Brake Adjustment Every brake stop, the disc brakes automatically adjust for wear.

Vehicle Care

10-37

Replacing Brake System Parts The braking system on a vehicle is complex. Its many parts have to be of top quality and work well together if the vehicle is to have really good braking. The vehicle was designed and tested with top-quality brake parts. When parts of the braking system are replaced — for example, when the brake linings wear down and new ones are installed — be sure to get new approved replacement parts. If this is not done, the brakes might not work properly. For example, if someone puts in brake linings that are wrong for the vehicle, the balance between the front and rear brakes can change — for the worse. The braking performance expected can change in many other ways if the wrong replacement brake parts are installed.

Chevrolet Corvette Owner Manual - 2012

Black plate (38,1)

10-38

Vehicle Care

Brake Fluid

The brake master cylinder reservoir is filled with DOT 3 brake fluid. See Engine Compartment Overview on page 10‑8 for the location of the reservoir. There are only two reasons why the brake fluid level in the reservoir might go down:

The brake fluid level goes down because of normal brake lining wear. When new linings are installed, the fluid level goes back up.

. A fluid leak in the brake

hydraulic system can also cause a low fluid level. Have the brake hydraulic system fixed, since a leak means that sooner or later the brakes will not work well.

Do not top off the brake fluid. Adding fluid does not correct a leak. If fluid is added when the linings are worn, there will be too much fluid when new brake linings are installed. Add or remove brake fluid, as necessary, only when work is done on the brake hydraulic system.

{ WARNING

If too much brake fluid is added, it can spill on the engine and burn, if the engine is hot enough. (Continued)

WARNING (Continued)

You or others could be burned, and the vehicle could be damaged. Add brake fluid only when work is done on the brake hydraulic system. See “Checking Brake Fluid” in this section.

Refer to the Maintenance Schedule to determine when to check the brake fluid. See Maintenance Schedule on page 11‑3.

Chevrolet Corvette Owner Manual - 2012

Black plate (39,1)

Checking Brake Fluid Check brake fluid by looking at the brake fluid reservoir. See Engine Compartment Overview on page 10‑8. The fluid level should be above the MIN mark on the reservoir. If it is not, have the brake hydraulic system checked to see if there is a leak. After work is done on the brake hydraulic system, make sure the level is between the MIN and MAX marks.

What to Add Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 11‑12. Always clean the brake fluid reservoir cap and the area around the cap before removing it. This helps keep dirt from entering the reservoir.

{ WARNING

With the wrong kind of fluid in the brake hydraulic system, the brakes might not work well. This could cause a crash. Always use the proper brake fluid.

Vehicle Care

10-39

Notice

. Using the wrong fluid

can badly damage brake hydraulic system parts. For example, just a few drops of mineral-based oil, such as engine oil, in the brake hydraulic system can damage brake hydraulic system parts so badly that they will have to be replaced. Do not let someone put in the wrong kind of fluid.

. If brake fluid is spilled on the

vehicle's painted surfaces, the paint finish can be damaged. Be careful not to spill brake fluid on the vehicle. If you do, wash it off immediately.

Chevrolet Corvette Owner Manual - 2012

Black plate (40,1)

10-40

Vehicle Care

Battery Refer to the replacement number on the original battery label when a new battery is needed. For battery replacement, see your dealer or the service manual. To purchase a service manual, see Service Publications Ordering Information on page 13‑18. { WARNING

Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling.

Vehicle Storage

{ WARNING

Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting on page 10‑78 for tips on working around a battery without getting hurt.

Infrequent Usage: Remove the black, negative (−) cable from the battery to keep the battery from running down. See “Power Window Initialization” in Power Windows on page 2‑18. Extended Storage: Remove the black, negative (−) cable from the battery or use a battery trickle charger.

Rear Axle

Some vehicles have a battery maintainer package. Follow the instructions provided with the battery maintainer package to keep the battery charged when the vehicle is not in use. For vehicles without a battery maintainer, see the following information.

When to Check Lubricant It is not necessary to regularly check rear axle fluid unless a leak is suspected or an unusual noise is heard. A fluid loss could indicate a problem. Have it inspected and repaired.

Chevrolet Corvette Owner Manual - 2012

Black plate (41,1)

How to Check Lubricant

To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the fill plug hole, some lubricant will need to be added. Add enough lubricant to raise the level to the bottom of the fill plug hole.

What to Use To add lubricant when the level is low or to completely refill after draining, see Recommended Fluids and Lubricants on page 11‑12. Then fill to the bottom of the fill plug hole with the required lubricant.

Starter Switch Check

{ WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be

sure there is enough room around the vehicle.

Vehicle Care

10-41

2. Firmly apply both the parking brake and the regular brake. See Parking Brake on page 9‑36. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts.

3. For automatic transmission

vehicles, try to start the engine in each gear. The vehicle should start only in P (Park) or N (Neutral). If the vehicle starts in any other position, contact your dealer for service. For manual transmission vehicles, put the shift lever in Neutral, push the clutch pedal down halfway, and try to start the engine. The vehicle should start only when the clutch pedal is pushed down all the way to the floor. If the vehicle starts when the clutch pedal is not pushed all the way down, contact your dealer for service.

Chevrolet Corvette Owner Manual - 2012

Black plate (42,1)

10-42

Vehicle Care

Automatic Transmission Shift Lock Control Function Check

{ WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be

sure there is enough room around the vehicle. It should be parked on a level surface.

2. Firmly apply the parking brake.

See Parking Brake on page 9‑36. Be ready to apply the regular brake immediately if the vehicle begins to move.

3. With the engine off, turn the

ignition on, but do not start the engine. Without applying the regular brake, try to move the shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), contact your dealer for service.

Park Brake and P (Park) Mechanism Check { WARNING

When you are doing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move.

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

To check the parking brake's holding ability: With the engine running and the transmission in N (Neutral), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only. To check the P (Park) mechanism's holding ability: With the engine running, shift to P (Park). Then release the parking brake followed by the regular brake.

Contact your dealer if service is required.

Chevrolet Corvette Owner Manual - 2012

Black plate (43,1)

Wiper Blade Replacement Windshield wiper blades should be inspected for wear or cracking. See Maintenance Schedule on page 11‑3 for more information. Replacement blades come in different types and are removed in different ways. For proper windshield wiper blade length and type, see Maintenance Replacement Parts on page 11‑14. Notice: Allowing the wiper arm to touch the windshield when no wiper blade is installed could damage the windshield. Any damage that occurs would not be covered by your warranty. Do not allow the wiper arm to touch the windshield.

To replace the windshield wiper blade: 1. Pull the wiper assembly away

from the windshield.

2. Lift up on the plastic latch in the middle of the wiper blade where the wiper arm attaches.

3. With the latch open, pull the wiper blade down toward the windshield far enough to release it from the J-hooked end of the wiper arm.

Vehicle Care

10-43

4. Remove the wiper blade.

Allowing the wiper blade arm to touch the windshield when no wiper blade is installed could damage the windshield. Any damage that occurs would not be covered by the vehicle warranty. Do not allow the wiper blade to touch the windshield. 5. Reverse Steps 1 through 3 for

wiper blade replacement.

Windshield Replacement The windshield is part of the Head-Up Display (HUD) system. If you ever have to get the windshield replaced, get one that is designed for HUD or the HUD image may look out of focus.

Chevrolet Corvette Owner Manual - 2012

Black plate (44,1)

10-44

Vehicle Care

Headlamp Aiming Headlamp aim has been preset at the factory and should need no further adjustment. However, if the vehicle is damaged in a crash, the headlamp aim may be affected. Aim adjustment to the low-beam headlamps may be necessary if oncoming drivers flash their high-beam headlamps at you (for vertical aim). If the headlamps need to be re-aimed, it is recommended that the vehicle be taken to the dealer for service.

Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑46. For any bulb‐changing procedure not listed in this section, contact your dealer.

Halogen Bulbs

{ WARNING

Halogen bulbs have pressurized gas inside and can burst if you drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions on the bulb package.

High Intensity Discharge (HID) Lighting

{ WARNING

The low beam high intensity discharge lighting system operates at a very high voltage. If you try to service any of the system components, you could be seriously injured. Have your dealer or a qualified technician service them.

The vehicle may have HID headlamps. After an HID headlamp bulb has been replaced, you may notice that the beam is a slightly different shade than it was originally. This is normal.

Chevrolet Corvette Owner Manual - 2012

Black plate (45,1)

Headlamps, Front Turn Signal and Parking Lamps

To replace a high-beam or front parking/turn signal bulb: 1. Turn the wheel to allow access

to the wheel well.

Vehicle Care

10-45

A. High-beam Headlamp B. Low-beam Headlamp C. Front Parking/Turn Signal If the low-beam headlamp needs to be replaced, see your dealer. See High Intensity Discharge (HID) Lighting on page 10‑44 for more information.

2. Remove the three outer

fasteners to move the access panel back.

3. Remove the outer cover to

expose the high-beam headlamp bulb socket.

4. Remove the headlamp bulb by

releasing the outer tabs from the socket.

5. Remove the front parking/turn signal bulb by turning the bulb socket counterclockwise.

6. Replace the high-beam

headlamp bulb with a new bulb and reattach to the bulb socket. Replace the front parking/turn signal bulb by turning the bulb socket clockwise.

7. Reverse the Steps 2 through 4 to

reinstall.

Chevrolet Corvette Owner Manual - 2012

Black plate (46,1)

10-46

Vehicle Care

Taillamps, Turn Signal, and Stoplamps To replace a stoplamp, taillamp/turn signal bulb: 1. Remove the screw from the top

of the lamp assembly.

2. Tilt the lamp assembly

toward you.

3. Turn the bulb socket one-quarter

turn counterclockwise and pull it out.

4. Pull the bulb straight out to remove it from the socket.

5. Push the new bulb in the bulb socket until it snaps into place. 6. Reinstall the lamp assembly by

first lining up the tabs on the bottom of the lamp assembly with the tabs in the vehicle, then slide it in.

7. Replace the screw at the top of

the lamp assembly.

Replacement Bulbs

Exterior Lamp

Front Parking/ Turn Signal Headlamp, High‐Beam Lamp Sidemarker Lamp Stoplamp/Taillamp/ Turn Signal Lamp

Bulb

Number

5702KA

H9

194LL (W3W)

3047K

For replacement bulbs not listed here, contact your dealer.

Electrical System

Electrical System Overload The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the chance of circuit overload and fire caused by electrical problems. Fuses and circuit breakers protect power devices in the vehicle. Replace a bad fuse with a new one of the identical size and rating.

Chevrolet Corvette Owner Manual - 2012

Black plate (47,1)

If there is a problem on the road and a fuse needs to be replaced, the same amperage fuse can be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible. Headlamp Wiring An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off. Windshield Wipers If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart. Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage.

Always clear ice and heavy snow from the windshield before using the windshield wipers. If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.

Fuses and Circuit Breakers The wiring circuits in the vehicle are protected from short circuits by a combination of J-Case fuses, mini-fuses and circuit breakers. This greatly reduces the chance of fires caused by electrical problems. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the identical size and rating.

Vehicle Care

10-47

If you ever have a problem on the road and do not have a spare fuse, you can borrow one that has the same amperage. Just pick some feature of the vehicle that you can get along without — like the radio or cigarette lighter — and use its fuse, if it is the correct amperage. Replace it as soon as you can. Vehicles with the ZR1 package have an intercooler relay located on the fan shroud. See your dealer. Vehicles with the ZR1 package also have a fuel system mini-fuse. It is located near the battery in the battery storage compartment in the rear of the vehicle.

Chevrolet Corvette Owner Manual - 2012

Black plate (48,1)

10-48

Vehicle Care

Engine Compartment Fuse Block There is one fuse block in the engine compartment located on the passenger side of the vehicle. See Engine Compartment Overview on page 10‑8 for more information on location. Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

For ZR1 models, the Fuel System fuse is located at the battery. The vehicle may not be equipped with all of the fuses, relays, and features shown.

Fuse

Usage Transmission Control Module/ Transmission Horn, Alternator Sense

Chevrolet Corvette Owner Manual - 2012

Black plate (49,1)

Vehicle Care

10-49

Fuse

Usage

Fuse

Usage

Fuse

Usage

10

11

12

Antilock Brake System (ABS)/Real Time Damping Wiper Stoplamps/ Back-Up Lamps Oxygen Sensor Battery Main 5
Parking Lamps Powertrain Relay Input/Electronic Throttle Control Manual Transmission Solenoids Antilock Brake System Odd Numbered Fuel Injectors

13

14

15

16

17
18

19

20

21

Electronic Suspension Control (Option) Canister Purge Solenoid, Mass Air Flow Sensor Air Conditioner Compressor Even Numbered Fuel Injectors Windshield Washer Headlamp Washer Passenger Side Low-Beam Headlamp Fuel Pump (except ZR1) Driver Side Low-Beam Headlamp

22

23

24

56

Front Fog Lamp Passenger Side High-Beam Headlamp Driver Side High-Beam Headlamp Engine Control Module (ECM)/ Transmission Control Module (TCM)/ Easy Key Module

J-Style Fuses

25
26

27

Usage

Cooling Fan Battery Main 3
Antilock Brake System

Chevrolet Corvette Owner Manual - 2012

Black plate (50,1)

10-50

Vehicle Care

J-Style Fuses

Usage

Micro- Relays

28

29
30
31
32
33

Heating/Ventilation/ Air Conditioning Blower Battery Main 2
Starter Audio Amplifier Intercooler Pump Battery Main 1

Micro- Relays

Usage

34

35

36

37

38

Horn Air Conditioning Compressor Windshield Washer Parking Lamps, Fog Lamps Front Fog Lamp

39

46

55

High-Beam Headlamp Headlamp Washer Fuel Pump (except ZR1)

Mini-Relays

Usage

40

41

42

43

44

45

47

Rear Defog Windshield Wiper High/Low Windshield Wiper Run/Accessory Crank Powertrain Ignition 1
Windshield Wiper On/Off Low-Beam Headlamp

Usage

Spare Fuses

Usage

48
49
50
51
52
53
54

Spare Spare Spare Spare Spare Spare Fuse Puller

Diodes

Usage

§ Diode 1
§ Wiper § Diode 2

Chevrolet Corvette Owner Manual - 2012

Black plate (51,1)

Vehicle Care

10-51

Instrument Panel Fuse Block The instrument panel fuse block is located on the passenger side of the vehicle, under the instrument panel and under the toe-board. Remove the carpet and toe-board covering to access the fuse block by pulling at the top of each corner of the panel. Open the fuse block cover to access the fuses. You can remove fuses using the fuse puller.

The vehicle may not be equipped with all of the fuses, relays, and features shown.

Fuses

BCK/ UP LAMP BLANK BLANK

Usage

Back-up Lamps

Not Used Not Used

Chevrolet Corvette Owner Manual - 2012

Black plate (52,1)

10-52

Vehicle Care

Fuses

Usage

BTSI SOL/STR WHL LCK

CLSTR/HUD

Brake Transmission Shift Interlock, Steering Wheel Column Lock Cluster, Heads-Up Display Cruise Control Switch

CRUISE SWTCH CTSY/LAMP Courtesy Lamp DR LCK DRIV DR SWITCH

Door Locks

Driver Door Switch

ECM

EXH MDL

Engine Control Module (ECM) Exhaust Module (Z06 & ZR1), Spare (Coupe and Convertible)

Fuses FUSE PLR GM LAN RUN/CRNK HTD SEAT/ WPR RLY

HVAC/ PWR SND

IGN SWTCH/ INTR SNSR

ISRVM/HVAC

ONSTAR

RDO/ S-BAND

Usage

Fuse Puller

GM LAN Devices

Heated Seat, Wiper Relays Heating Ventilation/ Air Conditioning, Power Sounder Ignition Switch, Intrusion Sensor Electric Inside Rearview Mirror, Heating, Ventilation, Air Conditioning OnStar (if equipped)

Radio, S-Band

Fuses

Usage

REAR FOG/ ALDL/TOP SWTCH

REVERSE LAMPS RUN CRNK

SDM/AOS SWTCH AIRBAG

Rear Fog Lamp, Assembly Line Diagnostic Link Connector, Convertible Top Switch

Reverse Lamps

Run/Crank Relay Sensing and Diagnostic Module, Automatic Occupant Sensing Module, Airbag Spare Spare Spare Spare

SPARE SPARE SPARE SPARE STOP LAMP Stop Lamp

SWC DM

Steering Wheel Dimming

Chevrolet Corvette Owner Manual - 2012

Black plate (53,1)

Fuses

TELE SWTCH/ MSM TONNEAU RELSE

TPA

Fuses

BLANK BLANK FUEL DR RELSE REAR/FOG TONNEAU RELSE TRUNK RELSE

Usage

Telescope Switch, Memory Seat Module

Tonneau Release

Tonneau Pulldown Actuator

Usage

Blank Blank

Fuel Door Release

Rear Fog Lamps

Tonneau Release

Trunk Release

Fuses AUX PWR BLANK BLANK BLANK BLANK BLANK BLANK BLANK DRVR HTD SEAT LTR PASS HTD SEAT