CAMPAIGN: FUEL FEED & RETURN HOSE/PIPE ASSEMBLIES

MODELS AFFECTED: 1987 BUICK SKHAWK EQUIPPED WITH 2.0L (RPO LT2 OR LT3, VIN CODE K OR M) ENGINE

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 repair within sixty (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 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 that is being sent to owners, the owners are being instructed to contact the Buick Customer Assistance Center if their 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 on how to contact the National Highway Traffic Safety Administration.

DEFECT INVOLVED

General Motors has detemined that a defect which relates to motor vehicle safety exists in some 1987 Buick Skyhawk models equipped with 2.0L (RPO LT2 or LT3, VIN Code K or M) engine. The fuel feed and/or return hose/pipe assemblies could crack or separate, allowing fuel to leak into the underhood area. This condition could ultimately result in an underhood fire without prior warning. Such a fire could, in time, spread to the passenger compartment and cause injury to any remaining occupants.

DEALER ACTION

To prevent the possibility of this condition occurring, dealers are to replace both the fuel feed and return hose/pipe assemblies as outlined in the Technical Procedure section of this bulltin.

VEHICLES INVOLVED

Involved are certain 1987 Buick Skyhawk models equipped with a 2.0L (RPO LT2 or LT3, VIN Code K or M) engine and produced within the following VIN breakpoints:

MODEL YEAR PLANT FROM THRU & INCLUDING ---- ----- ---- ---------------- 1987 Skyhawk Leeds SOP HK446664

DEALER MATERIAL

If your dealership has vehicles involved in this campaign, you will receive the following items:

- List of all vehicles involved in this campaign shipped to your dealership.

- One (1) campaign identification label per vehicle involved.

Involved vehicles have been identified by Vehicle Identification Number computer listings. These listings contain the complete Vehicle Identification number, owner name and address data, and are furnished to 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 name and address data obtained from State Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other reason 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 Buick 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 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 correction according to instructions contained in this bulletin.

PARTS INVENTORY

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

Part Quantity/ Number Description Vehicle Vehicle ------ ----------- ------- ------- W/2.0L LT2 10106034 Fuel Feed Assembly 1

W/2.0L LT2 10106035 Fuel Return Assembly 1

W/2.0L LT3 10106037 Fuel Feed Assembly 1

W/2.0L LT3 10106038 Fuel Return Assembly 1

Fuel feed and return hose/pipe assemblies each come with one (1) ORing for attachment at engine end. ORings for chassis end attachment must be ordered separately.

W/2.0L LT2 or LT3 22514722 ORing - Fuel Feed 1

W/2.0L LT2 or LT3 22516256 ORing - Fuel Return 1

There is a total of approximately 27,000 Buicks involved in this campaign. Of these, 26,400 are equipped with LT2 and 600 are equipped with LT3 engines. Order parts accordingly, based on attached involved vehicle listings.

TECHNICAL PROCEDURE

TBI ENGINE (RPO LT2, VIN CODE K) - REFERENCE FIGURE 1 -------------------------------- -------------------

1. CAUTION: To reduce the risk of fire and personal injury, it is necessary to relieve fuel system pressure before servicing fuel systm components. Have a dry chemical (Class B) fire extinguisher near work area.

To relleve the fuel systm pressure do the folloving:

- Remove "Fuel Pump" fuse from fuse block in passenger compartment.

- Crank engine. Engine will start and run until fuel supply remining in fuel lines has been consumed. Engage starter for 3.0 seconds to assure relief of any remaining pressure.

Unless this procedure is followed before servicing fuel lines or connections, fuel spray could occur.

2. Disconnect negative battery cable.

3. Use a backup wrench when loosening the screw coupling fittings at the fuel line ends.

4. Disconnect heater lnlet hose at bottomside of manifold for easier fuel line removal.

5. Install new ORings on the chassis fuel line ends (See Figure 1) with new Return Line ORing Part Number 22516256) and Feed Line ORing (Part Number 22514722). The new fuel line assemblies also contain new ORings for engine end attachment.

6. Install new engine fuel lines (Fuel Feed, Part Number 10106034 and Fuel Return, Part Number 10106035). Avoid any routing that causes kinking or twisting of the lines.

7. Reconnect heater inlet hose and add coolant, if necessary.

8. Secure all fuel line routing clamps.

9. Tighten all fuel line connections to 30 N.m (22 lb. ft.) torque while using a backup wrench on fittings.

10. Reinstall fuel pump fuse, reconnect battery cable, start engine, check coolant ano all previously loosened fuel line connections for possible leaks.

11. Install Campaign Identification Label.

MFI TURBO ENGINE (RPO LT3, VIN CODE M)

1. CAUTION: To reduce the risk of fire and personal injury, it is necessary to relieve fuel system pressure before servicing fuel systm components. Have a dry chemical (Class B) fire extinguisher near work area.

To relieve the fuel systm pressure do the following:

- Remove "Fuel Pump" fuse from fuse block in passenger compartment.

- Crank engine. Engine will start and run until fuel supply remining in fuel lines has been consumed. Engage starter for 3.0 seconds to assure relief of any remaining pressure.

Unless this procedure is folloved before servicing fuel lines or connections, fuel spray could occur.

2. Disconnect negative battery cable.

3. Use a backup wrench when loosening the screw coupling fittings at fuel line ends.

4. Install new ORings on the chassis fuel line ends (See Figure 2) with Return Line ORing (Part Number 22516256) and Feed Line ORing (Part Number 22514722). The new fuel line assemblies also contain new ORings for engine end attachment.

5. Install new engine fuel lines (Fuel Feed, Part Number 10106037) and Fuel Return (Part Number 10106038). Avoid any routing that causes kinking or twisting of the lines.

6. Secure all fuel line routing clamps.

7. Tighten all fuel line connections to 30 N.m (22 lb. ft.) torque while using a backup wrench on fittings.

8. Reinstall fuel pump fuse, reconnect battery cable, start engine and check all previously loosened fuel line connections for possible leaks.

9. Install Campaign Identification Label.

CAMPAIGN IDENTIFICATION LABEL

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 campaign number, the five (5) digit dealer code of the dealer performing the campaign service and the date the vehicle was campaigned. This information may be inserted with a typewriter or a ballpoint pen. Install the label only on a clean, dry surface of the radiator baffle where it is readily visible.

DISPOSITION OF REPLACED PARTS

Replaced parts must be held for disposition by Buick Field or Branch contact personnel. Parts must have a claim tag attached showing the repair order and the VIN of the vehicle from which they were removed.

WARRANTY INFORMATION

List the one applicable Labor Operation SUBLET PART FAILED PARTS FAILURE LABOR LABOR OTHER DEALER OPER. COUNT PART NO. ALLOW. CODE OP NO HOURS HOURS MTL TWG ----- ----- -------- ----- ---- ----- ----- ----- -------

- Installed Fuel Hose Assemblies With LT2 Engine (VIN Code K) 4 10106034 ** 96 V4340 1.0 0.1* --

- Installed Fuel Hose Assemblies With Lt3 Engine (VIN Code M) 4 10106037 ** 96 V4341 0.6 --

* 0.1 hour for administration. ** List current dealer price of installed parts, plus 30%.

Dear Buick Owner:

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

REASON FOR THE RECALL

General Motors has determined that a defect which relates to motor vehicle safety exists in some 1987 Buick Skyhawks equipped with 2.0L (RPO LT2 or LT3. VIN Code K or M) engine. The fuel feed and/or return hose/pipe assemblies could crack or separate allowing fuel to leak into the underhood area. This condition could ultimately result in an underhood fire without prior warning. Such a fire could, in time, spread to the passenger compartment and cause injury to any remaining occupants.

WHAT WE WILL DO

To prevent the possibility of this condition occurring, both the fuel feed and return hose/pipe assemblies will be replaced. This service will be perfomed for you at no charge.

WHAT YOU SHOULD DO

Please contact your Buick dealer as soon as possible to arrange a service date. Instructions for this service have been sent to your dealer. It is estimated that parts will be available on or about December 17, 1987. The labor time necessary to perform this service is approximately one (1) hour (thirty five (35) minutes if your vehicle is equipped with a turbo charged engine. Please allow some additional time for your dealer to process your vehicle.

Your Buick dealer is best equipped to obtain parts and provide service to ensure that your vehicle is corrected as promptly as possible. If however, you take your vehicle to your dealer on the agreed service date and they do not remedy this condition on that date or within five (5) days, we recommend you contact the Customer Assistance Department, Flint Home Office by calling 800-521-7300.

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, DC 20590, or call 800-424-9393 (Washington DC residents use 426-0123)

The enclosed owner reply Card identifies your vehicle. Presentation of this card to your dealer will assist in making the necessary correction 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 satisfation with our products.

Buick 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.