GM Service Manual Online
For 1990-2009 cars only

NEW TRANSMISSION PAN GASKET ALL THM 125C TRANSMISSIONS

ALL THM 125C TRANSMISSIONS

A new, thicker latex coated pan gasket, with better sealing capability, recently went into production on the above transmissions. The gasket is available from GMWDD under Part Number 8660038.

It is suggested that dealers be advised to order and use this gasket in place of the one supplied in the current overhaul gasket sets.

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.