SERVICE MANUAL UPDATE-A/C AIR DELIVERY TEMP. CONTROLS

SUBJECT: SERVICE MANUAL UPDATE - A/C C68 AIR DELIVERY - TEMPERATURE CONTROLS CODES/DIAGNOSTIC TEXT

MODELS/YEARS: 1989-90 CUTLASS SUPREME

Information in this bulletin supplements Dealer Technical Bulletin 90-T-87. Please do not discard 90-T-87.

The voltage shown in Dealer Technical Bulletin Number 90-T-87 under the heading "Correct Voltage" in Test D: Serial Data Line Test (Table 2) should be changed as follows:

From: Approximately 12 volts To: Approximately 5 volts

Please make a reference to this bulletin in your copies of Dealer Technical Bulletin 90-T-87.

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.