Exterior Mirror - Vibration

91chevy20

GMC NUMBER: 91-10-107

GROUP: 10 Body Section

DATE: June, 1991

CORPORATE
NUMBER: 161503R


SUBJECT: EXTERIOR MIRROR VIBRATION OR SHAKE/REMOVAL OF AFTERMARKET BUG/AIR DEFLECTOR

MODELS: 1988-91 C/K VEHICLES


Some 1988-91 C/K trucks may experience an outside rear view mirror shake after the mounting of a bug/air deflector.

Studies have been performed to substantiate that this condition (outside rear view mirror shakes when SPO or aftermarket bug/air deflector is added) does occur at speeds above 50 mph.

To correct this condition, remove the SPO or aftermarket bug/air deflector.