CAMPAIGN: INOPERATIVE PARKING BRAKE. Chevrolet Corvette 1990

Models: 1989-90 Chevrolet Corvette

# DENOTES CHANGE

TO: ALL GM DEALERS:

This bulletin revises the VEHICLES INVOLVED and OWNER NOTIFICATION sections of Product Revision Bulletin 0R03, dated February, 1990. Specifically, certain 1989 Chevrolet Corvettes have been added to this campaign.

General Motors of Canada has determined that certain 1989-90 Chevrolet Corvette model vehicles may exhibit an inoperative parking brake upon attempted engagement. This is due to the cable button pulling through and separating from the nylon reel resulting in an inoperable parking brake. This separation is a time related condition dependent on the number of parking brake applications and occurs only upon parking brake application, not under sustained load conditions.

To correct this condition, a new parking brake lever assembly will be installed on the involved vehicles.

# VEHICLES INVOLVED:

Involved are certain 1989-90 Chevrolet Corvette model vehicles built within the following VIN breakpoints:

MODEL/YEAR PLANT FROM THROUGH OPTION ---------- ----- ---- -------- ------- Y 1989 Bowling Green K5102000 K5110724 L98 Engine Y 1989 Bowling Green K5122004 K5126328 L98 Engine Y 1990 Bowling Green L5100001 L5100887 L98 Engine

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 service all vehicles subject to this campaign at no charge to owners, regardless of mileage, 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 in the future, you should take the steps necessary to be sure the campaign correction has been made before reselling 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:

All owners of record at the time of campaign release are shown on the attached computer listing and have been notified by first class mail from General Motors. The listings provided are for campaign activity only and should not be used for any other purpose. Some owners will receive letters addressing more than one campaign on their vehicle (see copies of owner letters included with this bulletin) as shown in the chart below.

VIN Range Campaigns Addressed In Owner Letters --------- ------------------------------------- K5102000 - K5110724 0A05 / 0R03

K5122004 - K5126328 0A05 / 0R03

L5100001 - L5100887 0R02 / 0R03

PARTS INFORMATION:

Parts required to complete this campaign should be ordered through regular channels, as follows:

Part Number Description Quantity/Vehicle ----------- ----------- ---------------- 10097695 Parking Brake Lever Assembly 1

PARTS AND LABOUR CLAIM INFORMATION:

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

Dear General Motors Customer:

General Motors of Canada has determined that a defect which relates to motor vehicle safety exists in certain 1988-89 Chevrolet Corvette model vehicles. The rear wheel tie rod assembly of these vehicles may fatigue and could fracture. A fracture in this assembly could result in a loss of vehicle control and a vehicle crash could occur without prior warning.

Additionally, parking brakes on certain 1989-90 Chevrolet Corvette model vehicles may become inoperable due to the cable button pulling through and separating from the nylon reel to which it is attached. This condition occurs on application only, not under sustained load conditions. The condition will be obvious due to a lack of resistance during parking brake application.

To prevent either of these conditions from occurring, vehicles will be inspected and tie rod assemblies found to be faulty will be replaced. Also, a new parking brake assembly will be installed.

This service will be performed for you at no charge.

Please contact your GM dealer as soon as possible to arrange a service date. Instructions for making this correction have been sent to your dealer and parts will be available on or about the week of April 23, 1990.

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.

Further assistance, if required, may be obtained from our Customer Assistance Centre, toll free, by calling 1-800-263-3777, or if you live in Quebec, 1-800-263-7854. 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.