Electric mirror repair packages have teen released for 1982 and 1983 Skyhawks (part numbers are 20496878 RH and 20496879LH). The package contains both a motor assembly and mirror face. The mirror face is also available separately (P/N 20318504 RH and 20318506 LH).
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.