REATAINED Accessory Power DTCS

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 GMC C3500 HD, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

RETAINED ACCESSORY POWER DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC	Description
DTC B1477	No Voltage At RAP#1 Relay Control Circuit
DTC B1478	Short To Battery In The RAP#1 Relay Control Circuit