Glow Plug Control Module Programming and Setup (LGH or LML): Notes
WARNING: This page is about a different car, the 2012 GMC Sierra, 2012 GMC Cab & Chassis Sierra, 2012 Chevrolet Silverado, and 2012 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The glow plug control module (GPCM) does not allow programming if its temperature is above 60°C (140°F).
The following service procedure requires either a programming or a setup event performed for a complete repair.