ELECT. SYSTEM MANUAL UPDATE REVISED THEFT DETERRENT SYSTEM

SUBJECT: ELECTRICAL SYSTEMS MANUAL - THEFT DETERRENT SYSTEM - REVISED PCM ENABLE SIGNAL TEST

VEHICLES AFFECTED: 1991-92 "C AND H" MODELS -----------------------------------------------------------------------------

The PCM ENABLE SIGNAL TEST in the Electrical Systems Manual has been revised to approach diagnostics in a more direct manner.

Use the following updated test charts for proper Theft Deterrent System Diagnosis:

1991 PARK AVENUE/ULTRA ---------------------- D: PCM ENABLE SIGNAL TEST on Page 189

1992 PARK AVENUE/ULTRA ---------------------- D: PCM ENABLE SIGNAL TEST on Page 205

1992 LESABRE

D: PCM ENABLE SIGNAL TEST on Page 198

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.