Circuit Description
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0836 detects abnormal conditions of the 4-wheel drive indication switch input, and 4-wheel drive status using speed and gear ratios. DTC P0836 is a type "X" DTC.