SERVICE MANUAL UPDATE SEC. 8A ELECTRICAL TROUBLESHOOTING

Subject: SERVICE MANUAL UPDATE - SECTION 8A ELECTRICAL TROUBLESHOOTING "WARNINGS AND ALARM" (UPDATE TEST PROC.)

Models Affected: 1990-91 SUNBIRD AND GRAND AM MODELS

MULTI-FUNCTION ALARM MODULE

1. The Fasten Belts Indicator test needs to be updated to reflect a fault in the Automatic Safety Belt circuit. If the Fasten Belts indicator remains lit after performing test "D" in Section 8A-76, check for an opening in the 528 ckt between term "B" of the Multi-Function Alarm Module and splice S237.

2. The circuit operation for the Fasten Belts Indicator needs to include the statement: The Fasten Belts Indicator will remain lit if there is a fault in the Automatic Safety Belt circuit.

Please note your copies of the above Service Manuals.

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.