For 1990-2009 cars

# SERVICE MANUAL UPDATE SEC. 8A REVISED HVAC PROGRAMMER TEST

#### SUBJECT: SERVICE MANUAL UPDATE REVISED HVAC PROGRAMMER TESTS

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

The information printed in the 1991 Oldsmobile Ninety-Eight Service Manual, Electrical Diagnosis, Pages 8A-67-6 and 8A-68-13 has been revised. The updated information deletes the measurement of voltage from an unused connector terminal. The updated information also revises a connector terminal number for another voltage measurement.

The following updated C: HVAC PROGRAMMER TESTS, Pages 8A-67-6 and 8A-68-13 should be used for correct diagnosis procedures.

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.