For 1990-2009 cars

# QUARTZ SPEEDOMETER 1984 'P' AND 1985 'C'

#### VEHICLES AFFECTED: 1984 'P' and 1985 'C' Car

GM of Canada is pleased to expand the exchange repair program for quartz speedometers to include the 1985 C-Car. This program provides repaired quartz speedometers in exchange for inoperative ones at a cost substantially below new replacement parts.

Quartz speedometers are serviced by the exchange units listed below. (An exchange unit is an assembly consisting of a dial, pointer, mechanism, and circuit board. Note that the two odometers and motors remain with the vehicle.)

DIVISION EXCHANGE UNIT -------- ------------- 84 Pontiac 'P' with Cruise 25048176 w/o Cruise 25048175 85 Buick 'C' 25077660 85 Cadillac 'C' 25054477 85 Oldsmobile 'C' 25053724

The correct procedure for requesting an exchange unit is listed in the 1984 bulletin number 0-109 dated December 15, 1983.

Please adhere to the following procedure when a vehicle required Dealer service for an inoperative quartz speedometer.

1. Follow the diagnostics procedure in the Service Manual precisely and completely. Many problems perceived by the observer to be in the speedometer are actually problems with remote sensors and connectors. Proper diagnostics will identify the source of the problem and avoid unnecessary removal and shipping of functional assemblies to service centres.

2. When diagnostics are complete and the fault is determined to be in the speedometer, call and request the appropriate exchange unit.

3. After the exchange unit is received from the service centre, remove the inoperative speedometer from the instrument cluster.

4. Remove the exchange unit from the reusable shipping container, and assemble it to the instrument cluster. Use car in handling the exchange unit. Hands must be free of dirt and grease. Avoid touching electronic components on the circuit board, as electro-static discharge can cause some components to fail.

5. Pack the inoperative speedometer in the reusable shipping container, together with a copy of the completed repair order. Include a description of the speedometer problem to assist the service centre in isolating the cause.

6. Enclosed in the reusable container is an addressed shipping label. Attach this label to the outside of the box and ship immediately to the service centre from which you obtained the exchange unit.

The success to the Qaurtz Speedometer Exchange Repair Program is dependent upon prompt return of the inoperative speedometer to the service centre. Your cooperation is essential to maintaining sufficient quantities of exchange stock.

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.