LOW OIL PRESSURE THM700-R4 DIAG.PUMP CAVITATION NOISE

When diagnosing low oil pressure or oil pump cavitation noise on a THM 700-R4 transmission, check the following items:

INSPECT

1. Oil filter "O" ring for nicks or cuts. Replace with P/N 8619568 if necessary.

2. Oil filter body for hairline cracks and neck for flash or blockage. Replace with P/N 8642933 if necessary.

3. If the oil filter shows signs of wear at the point it contacts the oil filter retaining clip, replace the filter with P/N 8642933 and the clip with P/N 8642422 if necessary.

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.