This bulletin is being issued to revise the Pass-Key ll, Universal Theft Deterrent System Symptom Table on pages 9D-10 (1993-94) and 8A-133-6 (1995) in the Service Manual.
The Symptom Table has been changed to re-order procedures when diagnosing the condition: SECURITY Indicator ON steady (not flashing); engine starts. Diagnosing this condition should start with Chart #5 first to diagnose the Lock Cylinder and wiring. If OK, go to Chart #3 to check the Theft Deterrent Module and wiring. These steps will save time by accessing easy to reach components first.
Please use the attached page to replace the existing page in the affected Service Manuals.
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.