CAMPAIGN:DECELERATION STALL. Buick Park Avenue 1995

Models: Certain 1995 Park Avenue, Oldsmobile Eighty Eight, Ninety Eight and Pontiac Bonneville with 3.8L Engine (RPO L36)

TO: ALL GENERAL MOTORS DEALERS

General Motors of Canada Limited has determined that certain 1995 Buick Park Avenue, Oldsmobile Eighty Eight, Ninety Eight and Pontiac Bonneville model vehicles equipped with a 3800 Series III engine (L36) may have a deceleration stall under certain specific conditions. This could result in a loss of power steering assist, generator and power braking assist.

To prevent this condition from occurring, dealers are to replace suspect MEM-CAL of the Powertrain Control Module (PCM) with a MEM-CAL of an improved design.

VEHICLES INVOLVED:

Involved are certain 1995 Buick Park Avenue, Oldsmobile Eighty Eight, Ninety Eight and Pontiac Bonneville model vehicles equipped with a 3800 Series H engine (RPO L36, VIN K):

Plant Engine Year Model Plant Code Code From Through

1995 Park Avenue Buick City H K SH600001 SH606269 1995 Oldsmobile Eighty Eight Orion 4 K S4800001 S4807122 1995 Oldsmobile Eighty Eight Buick City H K SH300001 SH303563 1995 Oldsmobile Ninety Eight Orion 4 K S4300001 S4303873 1995 Pontiac Bonneville Orion 4 K S4200001 S4213735

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 campaign on all involved vehicles at no charge to owners, regardless of kilometres 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:

BUICK

Part New MEM-CAL Quantity/ Old MEM-CAL Number Model Description Broadcast Code Vehicle I.D.

16215799 Park Avenue MEM-CAL BNUW 1 9674 or 8764 w/Fl7 (2.84) 16215803 Park Avenue NEM-CAL BNUX 1 9644 or 8774 w/FW2 (3.06)

OLDS

Part New MEM-CAL Quantity/ Old MEM-CAL Number Model Description Broadcast Code Vehicle I.D.

16215799 Eighty and MEM-CAL BNUW 1 9674 or 8764 Ninety Eight w/Fl7 (2.84) 16215814 Eighty Eight MEM-CAL BNWB 1 9664 or 8784 w/FW2 (3.06)

PARTS INFORMATION (Cont'd.):

PONTIAC

Part New MEM-CAL Quantity/ Old MEM-CAL Number Model Description Broadcast Code Vehicle I.D.

16215799 Bonneville MEM-CAL BNUW 1 9674 or 8764 w/Fl7 (2.84) 16215814 Bonneville MEM-CAL BNWB 1 9664 or 8784 w/FW2 (3.06)

PARTS AND LABOUR CLAIM 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 Replace NIEM-CAL .7

Time allowance includes 0.1 hour for dealer administrative detail associated with this campaign. Parts credit will be based on dealer net plus 40% to cover parts handling.

SERVICE PROCEDURE:

1. With ignition in the "OFF" position, open hood and disconnect negative battery cable.

2. Remove instrument panel right sound insulator.

3. Pull bottom of PCM (Powertrain Control Module) away from mounting bracket and remove PCM from bracket.

4. Remove harness connectors from PCM.

5. Remove PCM from vehicle.

6. Remove MEM-CAL access cover.

7. Remove MEM-CAL by using thumb and first finger. Gently squeeze each end of the blue calibrator unit.

8. Install new MEM-CAL into PCM.

9. Install MEM-CAL access cover.

10. Install connectors to PCM.

11. Install PCM in mounting bracket.

12. Install instrument panel right sound insulator.

13. Install negative battery cable.

14. Perform on-board diagnostic system check.

15. If DTC P0325, P 1 36 1, P 1 350, or P 1 523 occurs or if the MIL (Malfunction Indicator Lamp), i.e. "Service Engine Soon" light is "ON" constantly with no DTC'S, the engine MEM-CAL is not fully seated or is defective.

16. 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.

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.

Customer Support Department General Motors of Canada Limited

March 1995

Dear General Motors Customer:

General Motors of Canada Limited has determined that certain 1995 Buick Park Avenue, Oldsmobile Eighty Eight, Ninety Eight and Pontiac Bonneville model vehicles equipped with a 3800 Series H engine (L36) may have a deceleration stall under certain specific conditions. This could result in a loss of power steering assist, generator and power braking assist.

To prevent the possibility of this condition occurring, your dealer will install a component inside the Powertrain Control Module on your vehicle with an improved design.

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.