GM Service Manual Online
For 1990-2009 cars only

I/P CLUSTER LGHT. ON/BATTERY RUNS DOWN (DELCO RADIO REPAIR)

SUBJECT: I/P CLUSTER LIGHTS REMAIN ON OR BATTERY RUNS DOWN (SEND RADIO TO DELCO FOR REPAIR)

VEHICLES AFFECTED: 1990-91 CHEVROLET W-CAR

Condition:

---------- The backlighting for the radio and the IP cluster may remain on after the delayed lighting feature times out. This may also cause the battery to run down overnight.

Cause:

------- An internal short in the radio causes a feedback to the lighting circuits.

Correction:

------------ Remove the radio and send to a Delco Repair Centre. Insure that the condition is clearly noted on the repair tag.

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.