For 1990-2009 cars

# SERVICE MANUAL UPDATE SEC. 8A CHIME PINOUT TEST REVISED

#### SUBJECT: SERVICE MANUAL UPDATE REVISED MULTI-FUNCTION CHIME PINOUT TEST CHART

#### MODELS/YEARS: 1991 NINETY-EIGHT

The Information printed in the 1991 Oldsmobile Ninety-Eight Service Manual, Electrical Diagnosis, Page 8A- 76-2 has been revised. The updated information includes the proper test for pin A3 and deletes the test for pin A2.

The A: MULTI-FUNCTION CHIME (MFC) MODULE PINOUT TEST CHART on the back of this bulletin must be used for correct diagnosis.

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.