B1935 0C, B1935 0D, B2180 0C, B2180 0D
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
By measuring output current, the module calculates that the heating element resistance is above the maximum resistance.