CAMPAIGN: 4L60 TRANSMISSION (SOFT TURBINE SHAFT). Oldsmobile Custom Cruiser 1991

For 1990-2009 cars

# CAMPAIGN: 4L60 TRANSMISSION (SOFT TURBINE SHAFT)

#### Subject: 4L60 TRANSMISSION SOFT TURBINE SHAFT

#### Models: 1991 C/K Pickup Trucks, G-Vans, and Buick Estate Wagon with Automatic Transmissions (MD8)

#### TO: ALL AFFECTED DEALERS:

General Motors of Canada has determined that a small number of 1991 "CIK" Trucks, "G" Vans, and Estate Wagon, equipped with 4L60 automatic transmissions, may have been built with a transmission turbine shaft that may be at less than specified hardness. This is likely to cause a failure of the turbine shaft in the first 3,200 km of vehicle usage resulting in total loss of drive power in forward and/or reverse.

To prevent this condition from occurring, it is necessary to replace the transmission with a new transmission assembly.

#### VEHICLES INVOLVED:

Only the following 28 vehicles are involved:

"C" TRUCKS "K" TRUCKS

2GTFC29K2M1544754 2GTEK19K3M1544738 2GTEC19KXM1544720 2GCFK29K0M1222164 2GCEC19K7M1222181 2GTEK19K4M1544747 2GTFC29K4M1544691 2GTEK19K7M1544709 2GCEC19K5M1222065 2GTEK19K1M1544723 2GTEC19K3M1544669 2GCFK29K4M1222281 2GTFC29K9M1544699 2GCEK19K6M1222143 2GTEC19K4M1544678 2GCEK19K2M1222172 2GTEC19K8M1544733 2GTFK29K8M1544776 2GTEK19K5M1544806 2GCEK19K9M1221536 2GTEK19K0M1544762 2GCEK19K8M1221527 2GCEK19K6M1222398

"G" VANS BUICK ESTATE WAGON

2GCEG25Z5M4138226 1G4BR83E8MW405770 2GCEG25ZXM4138240 2GBEG25K2M4138160 2GBEG25K7M4138204

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:

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.

Whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or it is in your dealership for service, you are to ensure the campaign connection has been made before selling 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 modification according to instructions contained in this bulletin.

#### 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. The listings provided are for campaign activity only and should not be used for any other purpose.

#### PARTS INFORMATION:

A new transmission for each vehicle involved will be shipped to involved dealers by GM Powertrain Division (Hyda-Matic) on a no charge basis. The replaced unit is to be returned to GM Powertrain Division (Hydra-Matic) immediately to avoid a chargeback.

#### NOTE: PLEASE DO NOT RETURN THE OLD TRANSMISSION UNTIL YOU RECEIVE INSTRUCTIONS FROM GENERAL MOTORS, OSHAWA.

#### TRANSMISSION RETURN PROCEDURE:

New transmissions will be shipped in a reusable plastic shipping container. This container should be used to return the replaced transmission. A return shipping label will be included with the new transmission.

1. Drain as much oil from the replaced transmission as possible. Remove all plastic shipping plugs from die new unit and install them in the replaced transmission.

2. Remove shipping support from new transmission and install it on the replaced transmission. This support will secure the converter to prevent movement and transmission damage.

3. Put replaced transmission in plastic shipping container, attach the shipping label provided.

DO NOT ORDER A TRANSMISSION ASSEMBLY FROM GENERAL MOTORS SERVICE PARTS OPERATION (GMSPO).

The following parts are to be obtained from General Motors Service Parts Operation (GMSPO).

#### Model Number Description Quantity ------- -------- ------------------------- -------- C, G, B Use Bulk Fluid, Automatic Transmission 6 Ltrs K Use bulk Fluid, Automatic Transmission & 8 Ltrs Transfer Case K 15642510 Gasket, Transfer Case Adaptor 1 K 1358899 Seal, Transfer Case Adaptor 1

Parts are currently available from GMSPO.

#### PARTS AND LABOUR CLAIM INFORMATION

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

Time Repair Code Description Allowance ----------- ------------------------------- --------- 2A Replace Transmission Assembly on "C" Trucks 2.9 3A Replace Transmission Assembly on "K" Trucks 4.3 4A Replace Transmission Assembly on "G" Vans 2.7 5A Replace Transmission Assembly on "B" Car 3.3

ADD: If Equipped With Skid Plate .2

Time allowance includes 0.1 hour for dealer administrative detail associated with this campaign. An amount of $68.00 has been added to 2A, 3A, 4A and 5A to cover parts handling for transmission, also 2A includes $17.87, 3A includes $23.82 for fluid allowances.

#### SERVICE PROCEDURE:

Please refer to the appropriate Service Manuals for procedure.

#### 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.

INSERT CAMPAIGN NUMBER INSERT DEALER CODE

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.