Radio Display - Inoperative

91chevy13

Number: 91-293-9A

Section: 9A

Date: APRIL 1991

Corp. Bulletin No.: 139005


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.