TSB Document:

• Sorry, the NHTSA has not posted this TSB document yet.

You can still get the detailed info from GMC for this TSB. Call your local GMC dealer's service department & ask for a copy of TSB# 4491.

Affected Component: EXTERIOR LIGHTING:HEADLIGHTS

Summary

HEADLAMP FLICKER OR MOMENTARILY DIM WHILE DRIVING. 06-06-03-004 SUPPLEMENT. SHORT WHEEL BASE ONLY. *NJ UPDATED 1/30/08. *NJ

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