PinWire ColorCircuit No.FunctionA1–Not UsedA2DK BLU1796Steering Wheel Radio Controls Supply VoltageA3DK BLU245Passenger Door Lock Switch Unlock Control – BaseTAN/BLK254Rear Door Unlock Relay Control-UplevelA4PNK/WHT1970Headlamp Low Beam Relay ControlA5DK GRN/WHT1317Fog Lamp Relay ControlA6LT BLU244Passenger Door Lock Switch Lock Control-BaseGRY/BLK255Rear Door Lock Relay Control-Uplevel Chevrolet Silverado 1500 HD 2003 Body Control Module C2 Electrical Circuit Symbol Map
