CAMPAIGN: FRONT BRAKE HOSE MAY CONTACT WHEEL/TIRE

Model and Year: 1988 C 10-20 SERIES TRUCKS

The National Traffic and Motor Vehicle Safety Act, as amended, provides that each vehicle which is subject to a recall campaign of this type must be adequately repaired within a reasonable time after the owner has tendered it for repair. A failure to adequately repair within 60 days after tender of a vehicle is prima facie evidence of failure to repair within a reasonable time.

If the condition is not adequately repaired within a reasonable time, the owners may be entitled to an identical or reasonably equivalent vehicle at no charge or to a refund of the purchase price less a reasonable allowance for depreciation.

To avoid having to provide these burdensome solutions, every effort must be made to promptly schedule an appointment with each owner and to repair their vehicle as soon as possible. As you will see in reading the attached copy of the letter which is being sent to owners, the owners are being instructed to contact the nearest Chevrolet Branch Office if their dealer does not remedy the condition within five days of the mutually agreed upon service da.te. If the condition is not remedied within a reasonable time, they are instructed on how to contact the National Highway Traffic Safety Administration.

DEFECT INVOLVED

General Motors has determined that a defect which relates to motor vehicle safety exists in some 1988 C10-20 series 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 intemittent contact could eventually wear the hose to the point that a rupture would occcur, 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 C10-20 series trucks built within the following VIN breakpoints:

ASSEMBLY PLANT FROM THROUGH ----- ---- ------- Pontiac JE100001 JE117849 Fort Wayne JZ100001 JZ117988 Oshawa J1100014 J1135328

Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Identification Number, owner name and address data, and are furnished to the involved dealers with the campaign bulletin. Owner name and address data furnished will enable dealers to follow-up with owners involved in this campaign.

These listings may contain owner names and addresses obtained from State Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing to the follow-up necessary to complete this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.

OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicles by Chevrolet Motor Division (see copy of Owner Letter included with this bulletin).

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 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.

PARTS INFORMATION

Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO). To ensure these parts will be obtained as soon as possible, they should be ordered from GMSPO on a C.I.O. with no special instruction code, but on an advise code (2).

PART NUMBER DESCRIPTION QUANTITY ------ ----------- -------- 15567890 Repositioning Bracket Kit 1 Kit includes: - Locator Bracket (L.H. & R.H.) - Bolt - Nut

17988775 L.H. Front Brake Hose 1 17988776 R.H. Front Brake Hose 1

1052535 Delco Supreme II or As required DOT-3 equivalent brake fluid

SERVICE INFORMATION

Inspection - Both Sides of Vehicle

1. Disconnect negative battery cable.

2. Lift and support vehicle.

3. Inspect front brake hose(s) for chafing or wear on the outer cover, see illustration (Figure 1). If there are any signs of damage to the brake hose(s) assembly, the hose(s) must be replaced. Do not reattach the new hose(s) to the upper control arm however. Bleed the brakes. Refer to the 1988 C/K Truck Service Manual ST-375-88. Section 5A - Pages 5 and 6 for hose(s) replacement and bleeding instructions.

4. Install new brake hose locator brackets as described below.

Hose(s) Inspected - No Damage Found

1. Disconnect existing front brake hose brackets from upper control arm, see illustration (Figure 1). Spacer will be reused.

2. Install new brake hose locator brackets on the existing brake hose brackets and position on upper control arm, see illustration. Torque nut 8-14 Nm (72-125 lb.in.).

3. Lower vehicle.

4. Reconnect negative battery cable.

5. Install Campaign Identification Label.

CAMPAIGN IDENTIFICATION LABEL (Figure 2)

Each vehicle corrected in accordance with the instructions outlined in this Product Campaign Bulletin will require a "Campaign Identification Label." Each label provides a space to include the five (5) digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or ballpoint pen.

Each "Campaign Identification Label" is to be located on the radiator core support in an area which will be visible when the vehicle is brought in for periodic servicing by the owner. Apply "Campaign Identification Label" only on a clean dry surface.

CLAIM INFORMATION

Submit a Product Campaign Claim with the infomation indicated below:

* ** FAILED PARTS LABOR LAB OTH NET REPAIR PERFORMED PC PART NO. ALLOW FC OP HRS HRS AMT ---------------- -- -------- ----- -- -- --- --- --- INSPECT FRT. BRAKE HOSES 1 15567890 ** 00 V4140 0.4 0.1 & INSTALL BRACKET KIT

INSPECT FRT. BRAKE HOSES 2 17988775 ** 00 V4141 0.7 0.1 $2.86 REPLACE ONE (1) HOSE, & INSTALL BRACKET KIT

INSPECT FRT. BRAKE HOSES 3 17988776 ** 00 V4142 0.8 0.1 $2.86 REPLACE TWO (2) HOSES & INSTALL BRACKET KIT

* Campaign Administrative Allowance

** The "Parts Allowance" should be the sum total of the current GMSPO Dealer Net Price plus 30% of all parts required for the repair.

*** The $2.86 in the "Net Amount" Column covers the cost of brake fluid plus 30% used in conjunction with "V" operations V4141 & V4142.

Dealers will automatically receive the correct labor and material allowance based on the labor operation performed.

Refer to the Chevrolet Claims Precessing Manual for details on Product Campaign Claim submission.

(Notification Used By Chevrolet Motor Division)

Dear Chevrolet Owner:

This notice is being sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.

REASON FOR THIS RECALL

General Motors has detemined that a defect which relates to motor vehicle safety exists in some 1988 C10-20 series 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.

WHAT WE WILL DO

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. This service will be completed for you at no charge.

WHAT YOU SHOULD DO

Instructions for performing this service have been sent to your Chevrolet dealer. Please contact your dealer to arrange a service date. It is estimated that parts will be available to your dealer on November 16, 1987. The labor time necessary to perform this correction will vary from one-half hour to one hour. Please ask your dealer how much additional time will be needed to process your vehicle.

Your Chevrolet dealer is best equipped to obtain parts and provide service to ensure your vehicle is inspected and/or corrected as promptly as possible. However, if you take your vehicle to your dealer on the agreed service date and they do not service this condition on that date or within five days, we recommend you contact the nearest Branch Office by telephone. The Branch Office will assist you and the dealer in getting your vehicle serviced. The telephone numbers of the Branch Offices are listed in your Owner's Manual.

After contacting your dealer and the Branch Office, if you are still not satisfied that we have done our best to remedy this condition without charge within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 400 Seventh Street, S.W., Washington, D.C. 20590, or call 800-424-9393 (Washington, D.C. residents use 426-0123).

The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist them in making the necessary correction to your vehicle in the shortest possible time. If you have sold or traded your vehicle, please let us know by completing the postage paid owner reply card and returning it to us.

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

Chevrolet Motor Division GENERAL MOTORS CORPORATION

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.