Voice module group locations are not listed in the parts catalogue index. Part numbers and group locations for the module are listed below:
YEAR MODEL GROUP NO. PART NO. ----- ----- --------- -------- 1986 H,C 9.765 22520749
1984-85 E 9.765 22520749
1986 E 2.195 1638461
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.