CAMPAIGN: ANTI LOCK BRAKE HYDRAULIC MOUNTING BOLT

Models: 1987-88 LeSabres with Anti-Lock Brakes (JM4)

TO: ALL GENERAL MOTORS DEALERS

CONDITION:

--------- General Motors of Canada has determined that a defect which relates to motor vehicle safety may exist on some 1987 and 1988 LeSabre Model vehicles equipped with Anti-Lock Brake System (JM4). Involved vehicles may have been assembled with low torque of the brake hydraulic unit mounting bolts. This condition could cause increased brake pedal travel and/or poor pedal feel if the attachment loosens. In addition, with time this condition could lead to separation of the brake hydraulic unit from its mounting bracket. Separation would result in loss of brake function and could result in a vehicle crash without prior warning.

DEALER ACTION:

To correct this condition, Dealers are to replace the Hydraulic Unit Mounting Bolts on all vehicles involved according to the instructions in the Technical Procedure section of this bulletin.

VEHICLES INVOLVED:

Certain 1987 and 1988 LeSabres equipped with Anti-Lock Brakes (JM4) within the following vehicle breakpoints:

Year Plant From Through and Including ---- ----- ---- --------------------- 1987 Buick City HH400004 HH554313 1988 Buick City JH400004 JH462063

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.

PARTS INFORMATION:

Parts required should be ordered through regular channels, as follows:

Part Number Description Quantity/Vehicle ----------- ----------- ---------------- 25525687 Bolt - Hydraulic Unit Mounting 2

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:

Repair Code Description Time Allowance

2A Replace Hydraulic Unit .3 Mounting Bolts

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:

1. Raise hood, install left fender cover.

2. Remove inboard mounting bolt (see illustration) and install new bolt, Part Number 25525687. Torque to 50 N.m (37 lb. ft.).

3. Repeat Step 2 for outboard mounting bolt.

4. Remove fender cover, install campaign label, and close hood.

INSTALLATION OF CAMPAIGN IDENTIFICATION LABEL

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

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.