C0396 02
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.
Incremental encoder sensor 8 V supply circuit less than 1.5 V, or voltage on incremental encoder impulse signal circuit or incremental encoder direction signal circuit less than 0.5 V.