CAMPAIGN: I/P LT. HAND LOWER TRIM/BRAKE PEDAL INTERFERENCE

Subject: INSTRUMENT PANEL LEFT-HAND LOWER TRIM PANEL/BRAKE PEDAL INTERFERENCE

Models: 1992 Chevrolet Corvette

TO: ALL GENERAL MOTORS DEALERS:

General Motors of Canada has determined that certain 1992 Chevrolet Corvette model vehicles may experience their brake lights staying on and/or a lack of pedal return, which may cause light brake drag. Brake drag may, in tum, cause roughness, vibration, noise, a noticeable slowing of the vehicle and/or automatic transmission downshift when attempting to maintain a constant speed. Also, the cruise control may not set or the ASR (Anti-Slip Regulation - "Traction Control") may not function.

To prevent this condition from occurring, dealers are to inspect for proper clearance between the brake pedal arm and the instrument panel (I/P) left-hand lower trim panel. If clearance is not sufficient, the aim panel will be modified with a heat gun.

Owners of vehicles involved in this campaign are being contacted by the General Motors of Canada Customer Assistance Centre (CAC) on a branch-by-branch basis in conjunction with Product Campaign 2NO2. Refer to 2NO2 for details.

VEHICLES INVOLVED:

Involved are certain 1992 Chevrolet Corvette model vehicles built within the following VIN breakpoints:

Year Model Plant Plant Code From Through ---- ----- ----- ---------- ----- -------- 1992 Chev. Corvette Bowling Green "5" N5100001 N5104324 (LT1) 1992 Chev. Corvette Bowling Green "5" N5800001 N5800193 (ZR1) All affected vehicles have been identified by the VIN listing provided to involved dealers with this bulletin. Any dealer not receiving a listing was not shipped any of the affected vehicles.

DEALER CAMPAIGN RESPONSIBILITY:

Dealers are to perform this campaign on an involved vehicles at no charge to owners, regardless of kilometres traveled, age of vehicle, or ownership, from this time forward.

Whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or it is in your dealership for service, you are to ensure the campaign correction has been made before selling or releasing the vehicle.

Owners of vehicles recently sold from your new vehicle inventory are to be contacted by the dealer, and arrangements made to make the required modification according to instructions contained in this bulletin.

CAMPAIGN PROCEDURE:

Refer to Section 4 of the Service Policies and Procedures Manual for the detailed procedure on handling Product Campaigns. Dealers are requested to complete the campaign on all transfers as soon as possible.

OWNER NOTIFICATION:

In conjunction with Product Campaign 2NO2 (Opti-Spark Distributor), owners of vehicles involved are being contacted by the General Motors of Canada Customer Assistance Centre (CAC). Dealers will be notified by DCS when owner contacts by CAC will begin in their branch. Owner letters will also be sent after a CAC contact has been attempted by CAC within each branch (see copy of owner letter included with this bulletin).

PARTS INFORMATION:

No parts are required to complete this campaign.

PARTS AND LABOUR CLAIM INFORMATION:

Credit for the campaign work performed will be paid upon receipt of a properly completed campaign claim card or DCS transmission in accordance with the following:

Repair Code Description Time Allowance ----------- ----------- -------------- 1A Inspect/Trim Panel NOT Modified .3

2A Inspect/Trim Panel Modified .9

6A Cost associated with providing Customer a courtesy vehicle (rental).

Time allowance includes 0.1 hour for dealer administrative detail associated with this campaign. Parts credit will be based on dealer net plus 30% to cover parts handling.

SERVICE PROCEDURE:

INSPECTION

Attempt to pass an item approximately 2mm thick (such as a 2mm shim) between trim panel and brake pedal arm on both sides of pedal arm along entire length of pedal travel.

- If 2mm item passes without difficulty, no further action is required. Install Campaign Identification Label.

- If 2mm item does not pass freely, proceed to the "Modification Procedure" below.

MODIFICATION PROCEDURE

1. Remove I/P left-hand lower trim panel (per Preliminary Service Manual, Section 8C-33).

2. Lift away foam sound deadener from area shown in Figure 1, and tape out of way.

3. Using a heat gun, warm trim panel area shown in Figure 1. USE CARE TO WARM COMPLETE AREA EVENLY.

4. Using Channel Locked size 16 or larger, place near upper left-hand comer of I/P left-hand lower trim panel. as shown in Figure 1. Quickly reform brake pedal opening to configuration and dimensions indicated in Figure 1. If necessary, Channel Locks may be moved downward during initial reforming and/or steps 3 and 4 may be repeated to obtain minimum clearance of 2mm between brake service pedal arm and I/P left-hand lower trim panel.

Notice: To lessen Channel Lock imprint, place smooth shim stock or aluminum face cover between Channel Lock face and warmed surface of I/P left hand lower trim panel.

5. Reinstall I/P left-hand lower trim panel. Remeasure clearance between trim panel and brake pedal arm along entire length of pedal travel, using "INSPECTION" procedure.

6. Install Campaign Identification Label.

INSTALLATION OF CAMPAIGN IDENTIFICATION LABEL

Clean surface of radiator upper mounting panel and apply a Campaign Identification Label. Make sure the con-ect campaign number is inserted on the label. This will indicate that the campaign has been completed.

Dear General Motors Customer:

We at General Motors of Canada are extremely proud of the 1992 Chevrolet Corvette and sincerely hope that you are happy with your vehicle. Recently, however, we have discovered that a few 1992 Corvettes have been experiencing brake lights which stay on and/or the brake pedal not returning due to interference with the instrument panel lower trim panel. This interference can also result in the cruise control or the ASR (Anti-Slip Regulation - "Traction Control") not functioning.

This condition is unacceptable to us and as a result we are conducting a recall campaign to prevent the condition from occurring in your Corvette. Under this campaign, dealers will inspect the instrument panel lower trim panel and, if needed, modify the trim panel so it will not interfere with the brake pedal.

Please contact your GM dealer as soon as possible to arrange a service date.

This letter identifies your vehicle. Presentation of this letter to your dealer will assist their Service personnel in completing the necessary correction to your vehicle in the shortest possible time. Subsequent to contacting your dealer, further assistance, if required, may be obtained from our Customer Assistance Centre, toll free, by calling 1-800-263-3777 (English), or. 1-800-263-7854 (French).

We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.