B1516 66

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The BCM is awake.
The engine is OFF.
The hood and doors are closed.
DTC B1516 08 has run and passed during this ignition cycle.
DTC B1516 66 has not already run and passed during this ignition cycle.