The wiring diagrams that appear on the back of this bulletin replace wiring diagrams that appeared in the following Toronado Service Manuals for BCM trouble code diagnosis, code B127:
- 1990 Pages 8D2-28, 30, 32
- 1991-92 Pages 8D2-26, 28, 30
Please mark a reference to this bulletin in your copies of these 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.