CAMPAIGN: FRONT BRAKE HOSE MAY CONTACT WHEEL/TIRE. GMC Truck GMC C Pickup

FRONT BRAKE HOSE MAY CONTACT WHEEL/TIRE

Models: 1988 Model Trucks C 10-20

TO: ALL GENERAL MOTORS DEALERS

General Motors of Canada has determined that a defect which relates to motor vehicle safety exists in some 1988 Light Duty Model Trucks. The Right Hand front brake hose on a full left turn and the Left Hand front brake hose on a full right turn may contact the wheel or tire. This intermittent contact could eventually wear the hose to the point that a rupture would occur, resulting in a loss of front brakes. These vehicles are equipped with a dual braking system; part of the system will still work and allow the vehicle to be stopped, but over a greater distance. Loss of front braking at a time when minimum stopping distance is required could result in a vehicle crash without prior warning.

To prevent this condition from occurring, it will be necessary to install new repositioning brackets for the front brake hoses on all involved vehicles. The front brake hoses will also be inspected for wear and replaced as required.

VEHICLES INVOLVED:

Involved are certain 1988 Trucks built within the following VIN breakpoints:

FROM THROUGH

GMC

Oshawa SOP J1512864

CHEV

Oshawa SOP J1135328

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 to complete this modification should be ordered through regular channels, as follows:

Description Part Number Quantity Per Vehicle ----------- ----------- --------------------

Repositioning Bracket Kit 15567890 1

L.H. Front Brake Hose 15567867 1

R.H. Front Brake Hose 15567868 1

Delco Supreme II or Dot-3 Equivalent

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 Inspect & Install Kit .5

3A Inspect & Install Kit and .8 Replace One Hose

4A Inspect & Install Kit and .9 Replace Two Hoses

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 and an additional amount of $2.50 will be included in Repair Codes 3A and 4A for brake fluid.

SERVICE PROCEDURE:

Inspection - Both Sides of Vehicle

- Disconnect negative battery cable.

- Lift and support vehicle.

- Inspect front brake hose for chafing or wear on the outer cover, Sheet 1. If there are any signs of damage to the brake hose assembly, the hose must be replaced. Do not reattach the hose to the upper control arm however. Bleed the brakes. Refer to the 1988 C/K Truck Service Manual X-8731, Section 5A - Pages 5 and 6 for hose replacement and bleeding instructions.

- Install new brake hose locator bracket as described below.

Hose Inspected - No Damage found

- Disconnect existing front brake hose bracket from upper control arm, Sheet 1. Discard existing nuts and bolts but save spacer.

- Install new brake hose locator bracket on the existing brake hose bracket and position on upper control arm, Sheet 1. Torque nut.

- Lower vehicle.

- Reconnect negative battery cable.

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 of Canada bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these 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 your General Motors Dealer for information on whether your vehicle may benefit from the information.

Technical Services Department General Motors of Canada Limited

Dear General Motors Customer:

General Motors of Canada has determined that a defect which relates to motor vehicle safety exists in some 1988 Light Duty Model Trucks. The right hand front brake hose on a full left turn with the left hand front brake hose on a full right turn may contact the wheel or tire. This intermittent contact could eventually wear the hose to the point that a rupture would occur, resulting in a loss of front brakes. These vehicles are equipped with a dual braking system; part of the system will still work and allow the vehicle to be stopped, but over a greater distance. Loss of front braking at a time when minimum stopping distance is required could result in a vehicle crash without prior warning.

Instructions for performing this service have been sent to your GM Dealer. Please contact your Dealer to arrange a service date. The labour time necessary to perform this connection will vary from one-half hour to one hour. Please ask your Dealer how much additional time will be needed to process your vehicle.

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 the General Motors Zone Office nearest you. Your vehicle Owner's Manual provides the location and phone number of each respective Zone Office.

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

Technical Services Department General Motors of Canada Limited

Object Number: 75798 Size: FS

Object Number: 95097 Size: SH

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.