B1516 08
WARNING: This page is about a different car, the 2009 GMC 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.
The BCM detects the sensor signal duty cycle is less than 4 percent or greater than 96 percent for 2 minutes.