STEERING WHEEL RADIO CONTROLS INTERMITTENT OPERATION

SUBJECT: INTERMITTENT OPERATION OF STEERING WHEEL RADIO CONTROLS

VEHICLES AFFECTED: 1988-90 W-CARS

CONDITION:

The radio controls located in the steering wheel pad may work intermittently. The buttons on the radio receiver can still be used to control the radio functions.

CAUSE:

1. There may be a corrosion build up between the turn signal switch brushes and springs because of the plating process on the brushes.

2. The translator module located at the base of the steering column may be misinterpreting the signals from the steering wheel pad. A revised translator module with a higher electrical gain is available.

CORRECTION:

1. Replace the brushes and springs in the turn signal switch using kit, P/N #10456442.

2. Check to see if the translator module is an old version with a white date code stamp. If the colour of the stamp is white, install a revised module, P/N #26014179 in the vehicle. The new part received from CANSPO should have a blue stamp on it.

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.