DRIVELINE RATTLE AT 40 MPH WITH TCC ENGAGED

Bulletin Covers:

This bulletin is being revised to specify a different torque converter part number and add additional truck series and new labour information.

Driveline rattle at 60 KPH with TCC engaged can be eliminated in V and K model vehicles with 5.0L or 5.7L gas engines and 700R4 automatic transmissions by installing a new torque converter has an increased compression converter clutch spring and will eliminate the vibration which is sometimes heard as driveline rattle.

PARTS INFORMATION:

Part Number Description

8650935 torque converter

Parts are currently available through CANSPO.

WARRANTY INFORMATION

For vehicles repaired under warranty use:

Labour Operation T8145* Labour Time K models 4.0 Hrs. V models 3.4 Hrs. ADD: With skid plate 0.2 hr.

*Labour operation is coded to base vehicle coverage in the warranty system.

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.