The voltage values given in TEST K: A/C TEMPERATURE VALVE ACTUATOR, step 3, found in the 1991-92 Electrical Systems Manuals (Electronic Air Conditioning (C67) section), is incorrect as currently printed.
The following revised test should be used for proper diagnosis. The following pages and model years are affected:
1991 Park Avenue/Park Avenue Ultra, page 373 1992 LeSabre, page 357 1992 Park Avenue/Park Avenue Ultra, page 388
Please update your respective Electrical Systems Manuals 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.