CORRECTION FOR OIL FOAMING 125 TRANSMISSION

Some 1982 THM 125C transmissions may exhibit some oil foaming. This oil foaming is noticeable while checking transmission oil levels. When the oil foaming condition exists, the oil level indications on the dipstick will be inaccurate.

In servicing transmissions for this condition, use the following procedure.

SERVICE PROCEDURE (ON CAR SERVICE)

1. Remove the valve body cover and RTV sealant.

2. Disconnect the electrical wires from the plastic electrical connector in the side of the case cover and remove the electrical connector.

3. Slide the manual rod retaining clip off of the manual valve and slide the manual valve thru the electrical connector hole in the side of the case.

4. Replace the existing manual valve with P/N 8643316.

5. Replace the electrical wire connector and reconnect wires.

6. Reconnect manual rod retaining clip to the manual valve securely.

7. Remove the auxiliary valve body cover and replace it with P/N 8643326.

8. Replace the valve body cover and RTV sealant.

If oil foaming continues after the above steps have been performed, replace the case cover.

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.