GMC Terrain II facelift (2021-2024) Rear differential lock circuit

AWD IND AWD INDICATOR CTRL AWD POWER TRANSFER MTR AWD POWER TRANSFER MTR CTRL A BATTERY POSITIVE VOLT BLK WIRE BLK/VIO WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DIFFERENTIAL CLUTCH PUMP (ON REAR DIFFERENTIAL) DRIVE MODE SELECT SWITCH GRN/BRN WIRE GRY/GRN WIRE HI SPD GMLAN DATA BUS (+) 1 BATTERY POSITIVE VOLT HI SPD GMLAN DATA BUS (+) 1 GND HI SPD GMLAN DATA BUS (+) 2 HI SPD GMLAN DATA BUS (-) 1 HOT AT ALL TIMES INDICATOR DIMMING CTRL LOW VOLT POWER TRANSFER UNIT SHIFT ACTUATOR REAR BODY FUSE BLOCK REAR DIFFERENTIAL CLUTCH CONTROL MODULE REAR DIFFERENTIAL CLUTCH SOLENOID VALVE REAR DIFFERENTIAL CLUTCH SOLENOID VLV 1 LOW REAR DIFFERENTIAL CLUTCH REAR DIFFERENTIAL CLUTCH SOLENOID VLV 2 LOW RED WIRE RED/BLK WIRE RED/VIO WIRE RED/WHT WIRE SENS LOW REF SENS SIG SENS VOLT REF SERIAL DATA COMM ENABLE SIG (1) SIG 3 SOLENOID VLV HI SPLY VOLT U PHASE V PHASE VIO WIRE VIO/BRN WIRE VIO/WHT WIRE W PHASE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/ORG WIRE WHT/RED WIRE