NO RADIO DISPLAY W/PARK LIGHT OR HEADLAMPS ON-REPLACE RADIO. Chevrolet Corsica 1991

For 1990-2009 cars

# NO RADIO DISPLAY W/PARK LIGHT OR HEADLAMPS ON-REPLACE RADIO

#### Subject: NO RADIO DISPLAY WITH PARK LAMP OR HEADLAMPS ON

#### Model and Year: 1991 CORSICA/BERETTA

Condition: Some 1991 L models may experience an inoperative radio display with head lamps or park lamps on.

Cause: 1991 L car models feature a pulse width modulated dimming design for radio display, and cannot be used with any other type of radio. Although similar in appearance, upgrading or substituting any other style of radio will result in an inoperative display with headlights on.

Correction: Use only L car specific radios for exchange or upgrade. The following are part numbers to be used only with 1991 L-car models.

UM7 Base AM-FM Stereo P/N 12341714

UM6 Cassette AM-FM P/N 12341715

UIC Compact Disc AM-FM Stereo P/N 12341716

Parts are currently available from GMSPO.

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.