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# PIT4578.

Affected Component: EXTERIOR LIGHTING:HEADLIGHTS

Summary

DAYTIME RUNNING LIGHTS TURN OFF WITH THE TURN SIGNALS ON. *NJ

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