Affected Component: EXTERIOR LIGHTING:HEADLIGHTS:SWITCH

Date Published

APR 01, 2009

NHTSA TSB #

10030209

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# PIT-4835.

Summary

GMC/CHEVROLET: HEADLAMP SWITCH INOP IN MANUAL MODE ONLY. HEADLIGHTS ARE ALWAYS FUNCTIONAL IN AUTOMATIC MODE. THIS COULD BE THE RESULT OF A RELAY INSTALLED IN THE INCORRECT POSITION WITH THE UBEC. *PE