SERVICE MANUAL UPDATE-SEC. 1C AUTO A/C DISPLAY CONTROL TEST

SUBJECT: SECTION 1C AUTOMATIC AIR CONDITIONING (CG8) DISPLAY ILLUMINATION CONTROL TEST (REV'D DIAG PROCEDURE)

VEHICLES AFFECTED: 1993 "C" AND "H" MODELS

The DISPLAY ILLUMINATION CONTROL TEST found in the 1993 "C/H" service manuals has been revised to avoid confusion and misdiagnosis of the automatic A/C system.

The following revised chart should be used for proper system diagnosis:

1993 Pontiac Bonneville SE, SSE/SSEI, page 1C-42 1993 Oldsmobile Eighty-Eight/Ninety-Eight, page 1C-45

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.