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February 27, 2015 Service bulletin

This Preliminary Information communication provides information to the technician about vehicles with poor...

GMC technical service bulletin PIT5374 for 2014 GMC Sierra 1500, 2015 GMC Sierra 2500 and 2015 GMC Sierra Denali.

Bulletin number
PIT5374
Component
Electrical system: software
Summary
This Preliminary Information communication provides information to the technician about vehicles with poor headlight performance when driving in very dark rural areas. Technician should perform normal diagnostics first. If no issue found or the customer is still has complaint the Body Control Module for vehicles built before 12/23/14 at Flint Assembly (11th Vehicle Identification Number Digit "F"), 1/13/15 at Silao Assembly (11th Vehicle Identification Number Digit "G") or 1/16/15 at Ft. Wayne Assembly (11th Vehicle Identification Number Digit "Z"). Technician should replace both headlights with part number 23342527. After the headlights are replaced a headlamp aiming procedure should be performed.

Owners of these vehicles have filed 143 complaints in the electrical category.

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