CAMPAIGN: FRONT FUEL FEED HOSE

SUBJECT: FRONT FUEL FEED HOSE ASSEMBLY

Models: Certain 1991 Buick Regals with 3800 Engine (RPO L27; VIN Code L)

TO: ALL GENERAL MOTORS DEALERS

General Motors of Canada Limited has determined that a defect which relates to motor vehicle safety exists in certain 1991 Buick Regal model vehicles with 3800 engines (RPO L27; VIN Code L). These vehicles have fuel feed hoses which could pull out of the crimped coupling at the engine end of the hose assembly. If this coupling were to separate and an ignition source were present, an engine compartment fire could occur.

To prevent this condition from occurring, dealers are to install a new fuel feed hose on all involved vehicles.

VEHICLES INVOLVED:

Involved are certain 1991 Buick Regal model vehicles built within the following VIN breakpoints:

Year Model Plant Plant Code From Through

1991 Regal Oshawa #2 "1" M1824342 M1844356

IMPORTANT: ONLY VEHICLES WITH THE 3800 ENGINE (RPO L27; VIN CODE L) ARE INVOLVED.

NOTE: PLEASE CHECK DCS SCREEN 45 OR YOUR V.I.N. LISTING BEFORE PERFORMING CAMPAIGN TO ENSURE THAT THE VEHICLE IS AFFECTED. ONLY AFFECTED VIN'S WILL BE PAID.

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:

All unsold new vehicles in dealer's possession and subject to this campaign must be held and inspected/repaired per the Service Procedure of this Campaign Bulletin before owners take possession of these vehicles.

Dealers are to perform this campain on all involved vehicles at no charge to owners, regardless of kilometers traveled, age of vehicle, or ownership, from this time forward.

Owners of vehicles recently sold from your new vehicle inventory with no owner information indicated on the dealer listing, are to be contacted by the dealer, and arrangements made to make the required correction according to instructions contained in this bulletin. This could be done by mailing to such owners a copy of the owner letter accompanying this bulletin. Campaign follow- up cards should not be used for this purpose, since the owner may not as yet have received the notification letter.

In summary, whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or is in your dealership for service in the future, please take the steps necessary to be sure the campaign correction has been made before selling or releasing the vehicle.

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 (see copy of owner letter included with this bulletin). The listings provided are for campaign activity only and should not be used for any other purpose.

PARTS INFORMATION:

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

Part Number Description Quantity/Vehicle ----------- ----------- ---------------- 10255437 Fuel Feed Line 1

22514722 O-Ring - Fuel Feed Hose/Pipe 2 (10 to a package)

PARTS AND LABOUR INFORMATION:

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

Repair Code Description Time Allowance ----------- ----------- -------------- 2A Install New Front Fuel Feed Line Assembly .4

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. Disconnect negative battery cable.

2. Relieve fuel system pressure (see "Fuel System Pressure Relief" in Service Manual).

3. Remove sight shield (with engine identification).

4.Remove air duct from throttle body.

NOTICE: CLEAN ALL ENGINE FUEL PIPE CONNECTIONS AND SURROUNDING AREAS BEFORE DISCONNECTING TO AVOID CONTAMINATION OF FUEL SYSTEM.

5. Disconnect engine fuel feed hose/pipe from fuel rail. O-Ring will not be reused.

NOTICE: DO NOT REMOVE OR LOOSEN THE 5/16" FUEL RETURN LINE. THIS WILL INSURE FUEL RETURN LINE FITTING/COUPLING INTEGRITY; THEREBY, NOT REQUIRING ADDITIONAL O-RINGS.

6. Disconnect engine fuel hose/pipe routing strap.

7. Disconnect engine fuel feed hose/pipe from chassis fuel feed line. O-Ring will not be reused.

8. Install new O-Rings.

9. Position new fuel feed hose/pipe and finger tighten.

NOTICE: BLOW-OFF/WIPE-OFF THE FUEL FEED HOSE/PIPE AT EACH COUPLING TO REMOVE ANY RESIDUAL FUEL.

10. Install fuel pipe routing strap.

11. Tighten fuel feed pipe fittings to 30 N.m (22 lbs. ft.).

NOTICE: CARE MUST BE TAKEN WHEN INSTALLING AND TIGHTENING FUEL FEED HOSE/PIPE SO THAT IT DOES NOT TWIST.

12. Install air duct to throttle body.

13. Install sight shield.

14. Tighten fuel cap.

15. Connect negative battery cable.

16. Start vehicle and inspect fuel feed hose/pipe for leaks. Correct as necessary.

17. Install Campaign Identification Label.

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.

Dear General Motors Customer.

General Motors of Canada Limited has determined that a defect which relates to motor vehicle safety exists in certain 1991 Buick Regal model vehicles with 3800 engine. These vehicles have fuel feed hoses which could pull out of the crimped coupling at the engine end of the hose assembly. If this coupling were to separate and an ignition source were present, an engine compartment fire could occur.

To prevent this condition from occurring, your dealer will install a new fuel feed hose.

This service will be provided for you at no charge.

Please contact your GM dealer as soon as possible to arrange a service date.

If parts are required, ask your dealer for details regarding their availability. If parts are not in stock, they can be ordered before scheduling your service date.

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.

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

Customer Support Department General Motors of Canada Limited

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.