General Information Chevrolet Corvette C6

US English/Metric Conversion

Decimal and Metric Equivalents

Arrows and Symbols

This service manual uses various symbols in order to describe different service operations.

Scheme 1

Customer Concern Verification Sheets

The GM Customer Concern Verification Sheets have been designed to improve communications between the service customer and the technician. The more clearly the technician understands the concern and its symptoms, the more likely the concern will be fixed right the first time.

The GM-wide Customer Concern Verification Sheets are available in DealerWorld. The Customer Concern Verification Sheets may be printed and reproduced locally.

Dealers

All U.S. Dealers participating in the Common Training Program can enroll through the Common Training System Website at https://www.gmtraining.com. Within the website, there are individual training paths that are designed to assist in planning the training needs for each individual. Technicians should advise their Service Manager of their training needs including course names and course numbers. Dealers who have questions about Common Training should contact the Common Training help desk at 1-888-748-2686. The help desk is available Monday through Friday, 8:00 am-8:00pm Eastern Standard Time, excluding holidays. For GM Access support, contact the GM Access Help Desk at 1-888-337-1010.

Fleets

GM Fleet customers with GM Warranty In-Shop agreements are able to participate in service technical training through Common Training/GM Service Technical College (STC).

Assistance for all GM fleet customers using GM STC products and services is provided on the Internet via www.gmtraining.com using the "Contact Us" button on the site and/or the Common Training Help Desk at 1-888-748-2687. To order GM STC Training Materials, please contact the GM Training Materials Headquarters at 1-800-393-4831.

Most GM STC course materials have associated charges.

To purchase authentic GM STC Training Materials, contact the GM Training Materials Headquarters at 1-800-393-4831.

Non-GM Dealer Technicians

Technicians training for non-GM dealers is available through ACDelco. This training is for ACDelco customers employed in the automotive or truck service industry.

ACDelco courses are available at all approved GM Training Centers. Availability and schedules can be obtained by calling 1-800-825-5886 or contact us via the web at www.acdelcotechconnect.com and select the training button. Clinics are also offered through ACDelco Warehouse Distributors. Contract your dealer directly for more information.

Scheme 2

The vehicle identification number (VIN) plate is the legal identifier of the vehicle. The VIN plate is located on the upper left corner of the instrument panel (I/P) and can be seen through the windshield from the outside of the vehicle.

The last five digits of the assembly plant sequential number are stamped onto the rear side of the front sill (tie bar). This number is the same as the last five digits on the VIN plate. The VIN plate also has bar code characteristics.

Vehicle Identification Number (VIN) System

6L80 MYC Transmission ID and VIN Derivative Location

Refer to Transmission Identification Information .

4.8L, 5.3L, 6.0L, 6.2L or 7.0L Engine ID and VIN Derivative Locations

Refer to Engine Identification (6.2L LS3) or Engine Identification (6.2L LS9) or Engine Identification (7.0L) .

Scheme 3

RPO Code List

The following table provides the description of the Regular Production Option (RPO) codes that are available on the vehicle. The vehicle's RPO list is printed on the Service Parts Identification Label.

Metric Fasteners

This vehicle provides fastener dimensions using the metric system. Most metric fasteners are approximate in diameter to equivalent English fasteners. Make replacements using fasteners of the same nominal diameter, thread pitch, and strength.

A number marking identifies the OE metric fasteners except cross-recess head screws. The number also indicates the strength of the fastener material. A Posidrive® or Type 1A cross-recess identifies a metric cross-recess screw. For best results, use a Type 1A cross-recess screwdriver, or equivalent, in Posidrive® recess head screws.

GM Engineering Standards and North American Industries have adopted a portion of the ISO-defined standard metric fastener sizes. The purpose was to reduce the number of fastener sizes used while retaining the best thread qualities in each thread size. For example, the metric M6.0 X 1 screw, with nearly the same diameter and 25.4 threads per inch replaced the English 1/4-20 and 1/4-28 screws. The thread pitch is midway between the English coarse and fine thread pitches.

Scheme 4

The most commonly used metric fastener strength property classes are 9.8 and 10.9. The class identification is embossed on the head of each bolt. The English, inch strength classes range from grade 2 to grade 8. Radial lines are embossed on the head of each bolt in order to identify the strength class. The number of lines on the head of the bolt is 2 lines less than the actual grade. For example, a grade 8 bolt will have 6 radial lines on the bolt head. Some metric nuts are marked with a single digit strength identification number on the nut face.

The correct fasteners are available through GM SPO. Many metric fasteners available in the aftermarket parts channels are designed to metric standards of countries other than the United States, and may exhibit the following

1. Lower strength
2. No numbered head marking system
3. Wrong thread pitch

The metric fasteners on GM products are designed to new, international standards. The following are the common sizes and pitches, except for special applications

1. M6.0 X 1
2. M8 X 1.25
3. M10 X 1.5
4. M12 X 1.75
5. M14 X 2.00
6. M16 X 2.00

Prevailing Torque Fasteners

Prevailing torque fasteners create a thread interface between the fastener and the fastener counterpart in order to prevent the fastener from loosening.

All Metal Prevailing Torque Fasteners

These fasteners accomplish the thread interface by a designed distortion or deformation in the fastener.

Nylon Interface Prevailing Torque Fasteners

These fasteners accomplish the thread interface by the presence of a nylon material on the fastener threads.

Adhesive Coated Fasteners

These fasteners accomplish the thread interface by the presence of a thread-locking compound on the fastener threads. Refer to the appropriate repair procedure in order to determine if the fastener may be reused and the applicable thread-locking compound to apply to the fastener.

Scheme 5

A prevailing torque fastener may be reused ONLY if

1. The fastener and the fastener counterpart are clean and not damaged
2. There is no rust on the fastener
3. The fastener develops the specified minimum torque against its counterpart prior to the fastener seating

Metric Prevailing Torque Fastener Minimum Torque Development

English Prevailing Torque Fastener Minimum Torque Development

Thread Inserts

General Purpose Thread Repair Kits.

These kits are available commercially.

Repair Procedure

1. Determine the size, the pitch, and the depth of the damaged thread. If necessary, adjust the stop collars on the cutting tool and tap to the required depth.
2. Drill out the damaged threads. Clean out any chips.
3. Lubricate the tap with light engine oil. Tap the hole. Clean the threads.
4. Thread the thread insert onto the mandrel of the installer. Engage the tang of the insert onto the end of the mandrel.
5. Lubricate the insert with light engine oil, except when installing in aluminum and install the insert.
6. If the tang of the insert does not break off when backing out the installer, break the tang off with a drift.

Abbreviations and Meanings

Registered and Non-Registered Trademarks

Listed below are Registered Trademarks (®) or Non-Registered Trademarks (™) which may appear in this service manual.

Use Instruction Sheet Supplied

For the lock cylinder coding procedure, refer to the instruction sheet supplied in the lock cylinder kit.

For key cutting information, refer to the instructions provided from the manufacturer of the key cutting equipment used.

Lifting and Jacking the Vehicle

Before you begin any lifting procedure, be sure the vehicle is on a clean, hard, level surface. Be sure all the lifting equipment meets weight standards and is in good working order. Be sure all the vehicle loads are equally distributed and secure. If you are only supporting the vehicle at the frame side rails, make sure the lifting equipment does not put too much stress on or weaken the frame side rails.

If you use any other lifting methods than those called out, take special care not to damage the fuel tanks, the exhaust system or the underbody.

Scheme 6

It may be necessary to put the ZR1 on low ramps to allow lift arms to fit under the vehicle and provide necessary clearance for the installed rocker moldings.

Minimum Ramp Dimensions

1. Height: 76 mm (3 in)
2. Width: 304 mm (12 in)

Scheme 7

Front Lift

Position the (suspension contact) front lift under the outer edge of the front suspension lower control arms.

Rear Lift

Position the (suspension contact) rear lift under the rear tire and wheel assemblies.

Special Tools

J 43625 Lift Pad Adapter

Scheme 8

Note. The front hoist pads must not contact the rocker panels, the front fenders, or the floor pan.

Position the (frame contact) front hoist pads as follows

1. Under or immediately forward of the front frame rail shipping slot reinforcements.
2. The long sides of the hoist pads parallel to the frame rails.

Scheme 9

Note. The rear hoist pads must not contact the rocker panels to the outside of the frame rail shipping slot reinforcements. The rear hoist pads must not contact the floor pan.

Install the J 43625 into the rear frame rail shipping slots, lock into place and position the rear hoist pads as follows

1. Under the J 43625 .
2. The long sides of the hoist pads perpendicular to the J 43625 .

Vehicle Jacking

When you are lifting a vehicle with a vehicle jack or a service jack, block the wheels at the opposite end from which you are lifting. Use jack stands to provide additional support.

Scheme 10

Note. Use only service jacks utilizing 64 mm (21/2 inch) or smaller diameter lifting pads, to reduce the possibility of contact with undesired areas of the vehicle: The service jack lift pad must not contact the front fenders, or the floor pan.

Position the service jack lift pad as follows

Under the frame rail shipping slot reinforcements (1).

Scheme 11

Note. Use only service jacks utilizing 64 mm (21/2 inch) or smaller diameter lifting pads, to reduce the possibility of contact with undesired areas of the vehicle: The service jack lift pad must not contact the rocker panels, or the floor pan.

Position the service jack lift pad as follows

Under the frame rail shipping slot reinforcements (2).

Scheme 12

Note. The service jack lift pad must not come in contact with the engine oil pan (2) or the front suspension monoleaf spring. Carefully observe the following: Be sure to place a block or pad between the jack lift pad and the vehicle. Make sure the jack lift pad spans at least 2 suspension crossmember ribs (1). Lift only in the areas shown.

Position the service jack lift pad as follows

1. In the preferred location (3) if possible, spanning at least 2 of the suspension crossmember ribs (1).
2. In the optional location (4) if necessary, spanning at least 2 of the suspension crossmember ribs (1).

Scheme 13

Note. The service jack lift pad must not come in contact with the front suspension monoleaf spring. Carefully observe the following: Be sure to place a block or pad between the jack lift pad and the vehicle. Make sure the jack lift pad spans at least 2 suspension crossmember ribs (1). Lift only in the areas shown.

Position the service jack lift pad as follows

Spanning the 2 suspension crossmember ribs (1).

Scheme 14

Note. The service jack lift pad must not come in contact with the rear suspension monoleaf spring. Carefully observe the following: Be sure to place a block or pad between the jack lift pad and the vehicle. Make sure the jack lift pad spans at least 2 suspension crossmember ribs (1). Lift only in the areas shown.

Position the service jack lift pad as follows

Spanning the 2 suspension crossmember ribs (1).

Supporting the Vehicle with Jack Stands

Note. Do not place jack stands under the frame rails.

Under the Front Suspension Crossmember - Preferred Front Location

Note. The jack stand support pads must not come in contact with the engine oil pan (2) or the front suspension monoleaf spring. Carefully observe the following: Be sure to place a block or pad between the jack stand support pads and the vehicle. Make sure the jack stand support pads span at least 2 suspension crossmember ribs (1). Support only in the areas shown.

Position the jack stand support pads as follows

1. In the preferred location (3) if possible, spanning at least 2 of the suspension crossmember ribs (1).
2. In the optional location (4) if necessary, spanning at least 2 of the suspension crossmember ribs (1).

Under the Front Suspension Crossmember - Optional Front Location

Note. The jack stand support pads must not come in contact with the front suspension monoleaf spring. Carefully observe the following: Be sure to place a block or pad between the jack stand support pads and the vehicle. Make sure the jack stand support pads span at least 2 suspension crossmember ribs (1). Support only in the areas shown.

Position the jack stand support pads as follows

Spanning the 2 suspension crossmember ribs (1).

Under the Rear Suspension Crossmember

Note. The jack stand lift pads must not come in contact with the rear suspension monoleaf spring. Carefully observe the following: Be sure to place a block or pad between the jack stand lift pads and the vehicle. Make sure the jack stand lift pads span at least 2 suspension crossmember ribs (1). Support only in the areas shown.

Position the jack stand support pads as follows

Spanning the 2 suspension crossmember ribs (1).

Special Tools Ordering Information

The special service tools shown in this service manual that have product numbers beginning with J, SA or BT are available for worldwide distribution from

OE Tool and Equipment Group

Kent-Moore

28635 Mound Road

Warren

MI, U.S.A

48092-3499

Phone: 1-800-345-2233 or 586-574-2332

Monday through Friday

8:00 am-7:00 pm Eastern Standard Time

Fax: 1-800-578-7375 or 586-578-7321

The TECH 2 scan tool and accessories can be purchased through

Dealer Equipment and Services

5775 Enterprise Dr.

Warren

MI, U.S.A

48092-3463

Phone: 1-800-GM-TOOLS or 586-574-2332

Monday through Friday

8:00 am-6:00 pm EST

Fax: 1-586-578-7205

See also:
• Transmission Identification Information
• Engine Identification (6.2L LS3)
• SAFETY GLASSES WARNING