For 1990-2009 cars

# SERVICE MANUAL UPDATE SEC. 8A REVISED A/C ON-BOARD DIAG.

#### SUBJECT: SERVICE MANUAL UPDATE - SECTION 8A - ELECTRICAL DIAGNOSIS A/C: AIR DELIVERY AND TEMP. CONTROLS DUAL

#### VEHICLES AFFECTED: 1992 OLDSMOBILE "C" CAR

The procedure to enter Dual Zone (CJ2) on-board diagnostics, found in the 1992 Oldsmobile Ninety-Eight Service Manual is incorrect. The procedure to enter Electronic Air Conditioning (C68) is correct and not affected by this bulletin.

The enclosed procedure should replace the ON-BOARD DIAGNOSTIC PROCEDURE found on page 8A-68-26. (Note: Shaded area indicates change.)

Please update your respective Service Manual accordingly.

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.