CAMPAIGN: NO DRIVE/REVERSE OR NOISE WHILE DRIVING. GMC Truck GMC K Pickup

Models: 199S Chevrolet and GMC C/K Trucks Equipped with the 4L80-E Automatic Transmission (MT1)

TO: ALL GENERAL MOTORS DEALERS

General Motors of Canada Limited has determined that certain 1995 Chevrolet and GMC C/K Trucks equipped with the Hydra-Matic 4L80-E automatic transmission (MT1) may experience a premature transmission failure due to an improper finish on the planetary carrier gear pinion pins.

To correct this condition, dealers are to replace the transmission assembly.

VEHICLES INVOLVED:

Involved are the following VIN's:

VIN 4L80E MODE VIN 4L80E MODEL

1GCHC39F1SE176824 5DDP 2GCEK19S8S1188591 5CKP 2GCFK29S7S1188480 5CKP 2GTEK19S5SI539196 ??? 1GTGK29F2SE519908 5CKP 1GCGK29K2SE177101 5BUP 1GTGC29N2SE519962 5HHP 1GCGC29F2SE176496 5DDP 1GCGC29F9SE176558 5DDP 1GCGC29F8SE176471 5DDP 1GTGK29F6SE520009 5CKP 2GCEK19S3S1188546 5CKP 2GCEK19S3S1188658 5CKP 2GCEK19SXS1188723 ??? 1GCGK24KXSE176852 5BUP 1GCGK29FOSE176614 5CKP 1GCGK24K4SE175888 5BUP 1GCEC19S7SE176931 5MJP 1GTGK29K6SE519584 5BUP 1GTGK29K1SE519802 5BUP 2GTEK19SOS1539185 ??? 2GTEK19SlS1539163 5CKP 1GCGC24K9SE176905 5BSP 2GCEK19SXS1188463 5CKP 1GKEK18S6SJ729178 5CKP 1GCGC29F8SE177121 5DDP

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:

NOTE: Replace the transmission assembly with the same model as originally installed into the vehicle. The model identification is located on the I.D. tag on the right rear of the transmission case.

IMPORTANT: Transmission cores must be returned to GMSPO as the new transmission is installed. The original transmission assembly must be placed in the replacement transmission container and returned through the customary GMSPO process.

TRANSMISSION PART NUMBER 4L80E MODEL

24201749 5AFP 24201752 5ALP 24204062 5ARP 24204063 5BCP 24204064 5BSP 24204065 5BUP 24204066 5CKP 24204067 5DBP 24204068 5DDP 24201764 5DNP 24201763 5DPP 24205048 5HHP 24204069 5KKP 24201774 5MBP 24201866 5MCP 24204071 5MJP

Part Number Description Quantity/Vehicle

10952622 Transmission Fluid 8 Litres

15629093 Gasket, T-Case Adapter 1*

8681168 Seal, T-Case Adapter 1*

*4WD Applications Only

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 1995 C Truck (non 3500 HD) 2.6 Replace Transmission 3A 1995 K Truck 4.3 Replace Transmission (Includes Skid Plate Removal)

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. The transmission assembly should be replaced following the procedures outlined in the appropriate 1995 Service Manual.

2. Install a 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

June 1995

Dear General Motors Customer

As a valued customer, your complete satisfaction with your truck is our goal. In keeping with this goal, we want to let you know that we have discovered a problem that could affect your vehicle and we want to take care of it.

General Motors of Canada Limited has determined that certain 1995 Chevrolet and GMC C/K Trucks with the Hydra-Matic 4L80-E automatic transmission may have been assembled with an improper finish on the planetary carrier pinion gear pins. Continued use of the vehicle would make the transmission inoperative in drive or reverse.

To correct this condition, your dealer will replace the transmission assembly.

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.