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All Technical Service Bulletins for Mirrors: > < Outside Rear View Mirror - Vibrates, Distorted Images|Page 7980
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Mirrors: Customer Interest
Exterior Mirror - Vibration

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.
 

All Technical Service Bulletins for Mirrors: > < Outside Rear View Mirror - Vibrates, Distorted Images|Page 7980