CAMPAIGN: NO DRIVE/REVERSE OR NOISE WHILE DRIVING
SUBJECT: NO DRIVE/REVERSE OR NOISE WHILE DRIVING
MODELS: 1995 C/K, P TRUCKS, AND G VANS EQUIPPED WITH 4L80-E AUTOMATIC TRANSMISSION (MT1)
THIS BULLETIN CANCELS AND REPLACES BULLETIN 95-C-32 ISSUED JUNE, 1995.
THE WARRANTY INFORMATION HAS BEEN REVISED FOR THE G-VAN (LABOR OPERATION V9598). THE TIME ALLOWANCE IS 2.4 HOURS.
ALL COPIES OF 95-C-32 SHOULD BE DESTROYED.
General Motors has determined that CERTAIN 1995 C/K P trucks, G vans equipped with 4L80-E automatic transmission (MT1) may experience a failure in the output and reaction gear set due to a surface finish discrepancy of the pinion pins. The pinion bearing surface may spall prematurely, causing loss of support to the pinion gear, which may result in gear set fatigue failure. The vehicle may first experience noise and then loss of forward and reverse gears. To correct this condition, dealers are to replace the transmission assembly using the procedure outlined in this bulletin.
VEHICLES INVOLVED
Involved are CERTAIN 1995 C/K P trucks, G vans equipped with 4L80-E automatic transmission (MT1) built within the following VIN breakpoints:
Year Model Plant Code From Through
1995 C/K E SE519538 SE520134 1995 C/K J SJ728982 SJ729132 1995 K 1 S1539092 S1539092 1995 P 3 S3502160 S3502170 1995 G F SF528955 SF528955
The specific vehicles involved in this campaign have been identified by Vehicle Identification Number (VIN) Computer Listings. These listings are furnished to all involved dealers with the campaign bulletin. Dealers should confirm vehicle eligibility through VISS (Vehicle Information Service System) or SERVICENET prior to beginning campaign repairs.
DEALER CAMPAIGN RESPONSIBILITY
All unsold vehicles in dealers' 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 service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership, from this time forward.
Owners of vehicles recently sold from your vehicle inventory are to be contacted by the dealer and arrangements made to make the required correction according to instructions contained in this bulletin.
In summary, whenever a vehicle subject to this campaign enters your 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.
If the name and address of the owner of an involved vehicle was unavailable to GMC Truck Division at the time of campaign initiation, the dealer must 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 appropriate notification mailed to the owner. This second copy should then be submitted to the address listed below in the previously supplied yellow campaign 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 this 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
1. The transmission assembly should be replaced following the procedures outlined in the appropriate 1995 service manual.
2. Install Campaign Identification Label.
PARTS INFORMATION
Parts are to be obtained from General Motors Service Parts operation (GMSPO). To ensure parts are obtained as soon as possible, order them from GMSPO on a C.I.O. order with no special instruction code but order under an advise code (2). All Goodwrench Parts System test dealers should order on a "VIP" order.
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.
Part Number Description 4L80-E Model Quantity
24201749 Transmission 5AFP 1 24201752 Transmission 5ALP 1 24204062 Transmission 5ARP 1 24204063 Transmission 5BCP 1 24204064 Transmission 5BSP 1 24204065 Transmission 5BUP 1 24204066 Transmission 5CKP 1 24204067 Transmission 5DBP 1 24204068 Transmission 5DDP 1 24201764 Transmission 5DNP 1 24201763 Transmission 5DPP 1 24205048 Transmission 5HHP 1 24204069 Transmission 5KKP 1 24201774 Transmission 5MBP 1 24201866 Transmission 5MCP 1 24204071 Transmission 5MJP 1 12346143 Transmission Fluid ----- 8 Quarts 15629093 Gasket, T-Case ----- 1 Adapter (4WD Only) 08681168 Seal, T-Case ----- 1 Adapter (4WD Only)
WARRANTY INFORMATION
Dealers should submit a warranty claim on each vehicle completed under this campaign.
Labor Operation *Time Net Cause Number Description Allowance Amount Code --------------------------------------------------------------------------- V9595 Replace Transmission 2.5 ** 96 (C Truck, Non 3500 HD) V9596 Replace Transmission 2.6 ** 96 (C Truck, 3500 HD) V9597 Replace Transmission 4.2 ** 96 (K Truck) (Includes Skid Plate Removal) V9598 Replace Transmission 2.4 ** 96 (G Van) V9591 Replace Transmission 2.6 ** 96 (P Truck)
* For dealer to receive Administrative Time Allowance associated with this campaign, add 0. 1 hour to the Labor Operation Time Allowance.
** Transmission Fluid is a net item. Submit actual cost for oil plus 40% markup. Enter as Net Item Code M.
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 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 "GMC Truck Warranty Claims Processing Manual" #P9119 Rev. 2/94.
Dear GMC Truck Customer:
As a valued customer, your complete satisfaction with your GMC 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 at no charge to you.
On a number of 1995 Sierras, Yukons, Suburbans, Vanduras, and P-Chassis trucks with the Hydra-Matic 4L80-E automatic transmission, such as yours, the transmission may have been assembled with an improper finish on the planetary carrier pinion gear pin. This condition could result in transmission becoming inoperative in drive or reverse.
To be absolutely sure that your vehicle is to specifications, we will replace the transmission assembly.
Instructions for performing this service have been sent to your GMC Truck dealer, and parts are available. Please contact your GMC dealer to arrange a service date as soon as possible. This procedure will take about approximately 1-1/2 to 4 hours to complete, but you should ask how much additional time your dealer will need to schedule and process your vehicle.
The enclosed postage paid 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 the 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 continued satisfaction with our product.
GMC TRUCK 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.
