The 1984 Fiero does not use a separate cruise control module. The module's function is done by a circuit board, which is part of the instrument cluster. The replacement of the circuit board requires the instrument cluster to be removed and sent to an AC Delco station for repair. The instrument cluster circuit board is no longer available.
A service kit, P/N 10150319, has been developed to convert the 1984 Fiero to the same configuration as newer models, replacing the instrument cluster circuit board with a separate module. The kit consists of a separate module, a new servo, wire leads, and complete instructions. The kit has several advantages over the original service procedure:
1. The cost of the installed kit is approximately the same, or slightly less than, the original fix of removing, repairing, and replacing the instrument cluster.
2. The customer will only need one visit to the dealership to have this service performed.
3. The cruise control system will now have the "tap-up, tap-down" feature, which the original vehicle did not.
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.