CAMPAIGN: FUEL FILTER CRACKS FUEL INLET MOUNTING NUT LEAK. GMC Truck Safari

MODELS: 1990 L-VAN (ALL-WHEEL DRIVE VAN)

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 owner may be entitled to an identical or reasonably equivalent vehicle at no charge, or to a refund of the purcbase price less a reasonable allowance for depreciation.

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

DEFECT INVOLVED

General Motors bas determined that a defect which relates to motor vehicle safety exists in certain 1990 GMC "L-Vans" (All-Wheel Drive Vans). On some of the involved vehicles, the frame mounted fuel filter may crack from flexing at the fuel inlet mounting nut and allow fuel leakage. Thi s crack can result in fuel leakage in the area of the exhaust pipe. Heat from the exhaust pipe may ignite the fuel and cause a vehicle fire.

To prevent this condition from occurring, involved dealers are to inspect the fuel feed pipe installation and, if necessary, install a new intermediate fuel feed pipe assembly and fuel filter assembly.

VEHICLES INVOLVED

Involved are certain 1990 L-Vans (All-Wheel Drive Vans) built within the following VIN breakpoints:

MODEL YEAR FROM THROUGH ---- ---- ------- 1990 LB500005 LB509143

The specific vehicles involved in this campaign have been identified by Vehicle Identification Number Computer Listings. These listings are furnished to all involved dealers with the campaign 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 ownersbip, from this time forward. Dealers are to inspect and correct all affected vehicles in new and used vehicle stock prior to their sale.

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 ensure 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 cor- rection according to instructions contained in this bulletin.

If no owner's name and address were available to GMC Truck Division at the time of campaign initiation, the dealer will determine the owner's name and address from the dealership sales records.

Please provide this information directly on the second copy of the listing next to the applicable VIN so that our records may be updated and the ap- propriate notification mailed to the owner. This second copy should then be submitted to the address listed below in the previously supplied yellow cam- paign envelopes.

GMC Truck Division General Motors Corporation 101 Union Street Plymouth, Michigan 48170

OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicles by GMC Truck Division (see copy of owner letter included with this bulletin). A listing of owner names and addresses has been furnished to the involved dealers to enable dealers to follow up with owners involved in tbis campaign. This listing 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 this campaign.

SERVICE PROCEDURE (See Figure 1)

A. INSPECTION

1. Check vebicle in frame area shown in figure. If intermediate fuel feed pipe assembly (1A) is as sbown in View A(facing inboard), no further action is required.

2. If fuel feed pipe assembly (1B) is as shown in View B, both fuel feed pipe (1B) and filter (4) must be replaced.

B. REPLACEMENT OF FUEL FEED INTERMEDIATE ASSEMBLY AND FILTER

1. Disconnect intermediate fuel feed pipe (1B) from top of fuel filter (4) and from rear fuel feed pipe as shown in View B. Discard intermediate fuel feed pipe.

2. Disconnect front fuel feed pipe from bottom of fuel filter (4).

3. Remove screw (3) holding fuel filter clamp (2) to frame and remove filter and clamp. Discard filter (4). Retain clamp (2) and screw (3).

4. Install new fuel filter (4) in clamp (2) and screw clamp to frame. Torque screw (3) to 9-13 Nm (80-115 lb. in).

5. Connect front fuel feed pipe to bottom of filter. Connect new intermediate fuel feed pipe to top of filter and to rear fuel feed pipe. Fitting must be installed as shown in View A with bend in pipe facing inboard. Torque fittings to 20-34 Nm (15-25 lb. ft).

6. Turn ignition on and check fuel feed connections for leaks.

PARTS INFORMATION

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

Part Number Description Quantity ------------ ----------- -------- 15650679 Fuel Feed Intermediate Pipe Assembly 1 25055052 Fuel Filter Assembly 1 15627600 Fuel Filter Mounting Clamp Assembly 1 (As Required) 11503675 Screw, Clamp Mounting (As Required) 1

WARRANTY INFORMATION

Dealers should submit an accurately filled out Warranty Repair Order on each vehicle completed under this campaign.

LABOR OPERATION *TIME TROUBLE NUMBER DESCRIPTION ALLOWANCE CODE ------ ----------- --------- ---- V5940 Inspect fuel feed pipe - .2 Hr 96 No further action required

V5941 Install new intermediate fuel .4 Hr 96 feed pipe assembly and fuel filter

* For dealer to receive Administrative Time Allowance associated with this campaign, add 0. 1 hour to the Labor Operation Time Allowance.

CAMPAIGN IDENTIFICATION LABEL

Each vebicle 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 campaign number and five (5) digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or ball point 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.

ADMINISTRATIVE PROCEDURE

Procedures covering this campaign are outlined in Section V of your dealership's "GM Truck Claims Processing Manual" #P 8919.

Dear GMC Owner:

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

General Motors has determined that a defect which relates to motor vehicle safety exists in certain 1990 GMC "L-Vans" (All-Wheel Drive Vans). On some of the involved vehicles the frame mounted fuel filter may crack from flexing at the fuel inlet mounting nut and allow fuel leakage. This crack can result in fuel leakage in the area of the exhaust pipe. Heat from the exhaust pipe may ignite the fuel and cause a vehicle fire.

Please contact your dealer to arrange a service date. Parts are available. The labor time necessary to perform this correction is approximately 30 minutes. Please ask your dealer how much additional time will be needed to schedule and process your vehicle.

Your GMC 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 your nearest GMC Truck Zone Office by telephone. The Zone Office will assist you and your dealer in getting your vehicle serviced. The telephone numbers of the Zone Offices are listed in your Warranty and Owner Assistance Information Manual.

After contacting your dealer and the Zone 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 366-0123).

The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist in making the necessary correction to your vehicle in the shortest possible time. If you have sold or traded your vehicle, please furnish us complete name and address of the person you sold or traded your vehicle to and return the card 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.

Object Number: 75089 Size: FS

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.