Car Wiring Diagrams for Ground distribution circuit for GMC Sierra IV (2018-2022)

10 SPEED A/T 6 SPEED A/T 6.6L TURBO DIESEL AUTOMATIC TRANSMISSION ASSEMBLY AUXILIARY HEATER COOLANT PUMP RELAY BATTERY CURRENT SENSOR BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE CONTROL SOLENOID VALVE ASSEMBLY ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE ENGINE COOLANT LEVEL SWITCH ENGINE OIL LEVEL SWITCH GLOW PLUG CONTROL MODULE IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 4 IGNITION COIL 5 IGNITION COIL 6 IGNITION COIL 7 IGNITION COIL 8 MULTI-FUNCTION INTAKE AIR SENSOR NITROGEN OXIDES SENSOR 1 POWER TAKE-OFF CONTROL MODULE TRANSMISSION CONTROL MODULE TURBOCHARGER VANE POSITION ACTUATOR UNDERHOOD FUSE BLOCK

AUXILIARY BATTERY BATTERY BLK WIRE CARGO LAMP RELAY ELECTRICAL AUXILIARY HEATER HORN HVAC CONTROL MODULE IGNITION MAIN RELAY LEFT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH REAR DEFOGGER RELAY RETAINED ACCESSORY POWER RELAY 1 RETAINED ACCESSORY POWER RELAY 2 RIGHT FRONT FOG LAMP RIGHT FRONT SIDE MARKER LAMP RIGHT FRONT TURN SIGNAL LAMP RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE RIGHT HIGH BEAM HEADLAMP RIGHT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH RIGHT LOW BEAM HEADLAMP RIGHT PARK/TURN SIGNAL LAMP STOP LAMP RELAY TRAILER BACKUP LAMPS RELAY VEHICLE STABILITY CONTROL SWITCH WINDSHIELD WASHER PUMP RELAY WINDSHIELD WIPER RELAY

6.6L TURBO DIESEL A/C COMPRESSOR ACTIVE GRILLE AIR SHUTTER 1 ACTUATOR ACTIVE GRILLE AIR SHUTTER 2 ACTUATOR AUXILIARY BATTERY RELAY 1 AUXILIARY BATTERY RELAY 2 BATTERY AUXILIARY FUSE BLOCK BLK WIRE CHARGE AIR COOLER COOLANT PUMP COMPRESSOR CLUTCH COOLING FAN CLUTCH COOLING FAN RELAY ELECTRICAL AUXILIARY HEATER EXHAUST PARTICULATE MATTER SENSOR FRONT AXLE ENGAGEMENT ACTUATOR INFO DISPLAY MODULE J156 (6.6L TURBO DIESEL) J361 (6.6L TURBO DIESEL) NCA WIRE NITROGEN OXIDES SENSOR 2 POWER STEERING CONTROL MODULE RADIO REDUCTANT CONTROL MODULE STARTER RELAY TELEMATICS COMMUNICATIONS INTERFACE CONTROL MODULE TRANSFER CASE CONTROL MODULE UNDERHOOD AUXILIARY FUSE BLOCK UNDERHOOD FUSE BLOCK VIDEO PROCESSING CONTROL MODULE W/ AUXILIARY BATTERIES W/ ON STAR WHT WIRE

BLK WIRE BLOWER MOTOR BODY CONTROL MODULE CENTER HIGH MOUNTED STOP LAMP COLLISION ALERT INDICATORS CONFIGURABLE PROVISION BLUNT CUT DRIVE MODE SELECT SWITCH FRONT MIDDLE ROOF CLEARANCE LAMP FRONT OVERHEAD CONSOLE ASSEMBLY HEAD-UP DISPLAY HEAD-UP DISPLAY SWITCH HEADLAMP SWITCH HORN SWITCH HVAC CONTROLS IGNITION MODE SWITCH INSIDE REAR VIEW MIRROR INSTRUMENT CLUSTER INSTRUMENT PANEL RECEPTACLE INSTRUMENT PANEL KEY CAPTURE SOLENOID ACTUATOR LEFT FRONT OUTER ROOF CLEARANCE LAMP LEFT STEERING WHEEL CONTROLS SWITCH LEFT SUNSHADE LEFT LAMP MIRROR SUNSHADE MID/HIGH LEVEL NCA WIRE PARK BRAKE CONTROL SWITCH PARK POSITION SWITCH RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RIGHT FRONT OUTER ROOF CLEARANCE LAMP RIGHT STEERING WHEEL CONTROLS SWITCH RIGHT SUNSHADE RIGHT LAMP MIRROR SUNSHADE SERIAL DATA GATEWAY MODULE STEERING COLUMN LOCK MODULE STEERING WHEEL AIR BAG COIL STEERING WHEEL ANGLE SENSOR STEERING WHEEL HEATING CONTROL MODULE SUNROOF MOTOR TRAILER BRAKE CONTROL SWITCH TRANSMISSION MANUAL SHIFT SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFTLOCK CONTROL SOLENOID ACTUATOR TURN SIGNAL/ MULTI-FUNCTION SWITCH USB RECEPTACLE W/ ACCESSORY STEERING WHEEL CONTROL W/ FORWARD COLLISION ALERT SENSOR W/ KEYLESS START SWITCH W/ SENSITIVE MIRRORS W/O SENSITIVE MIRRORS WHT WIRE WINDSHIELD FRONT VIEW CAMERA

ACCESSORY DC/AC POWER INVERTER MODULE BLK WIRE BODY CONTROL MODULE DRIVER BACK SEAT BLOWER MOTOR DRIVER CUSHION SEAT BLOWER MOTOR DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR LOCK SWITCH DRIVER EXTERIOR DOOR HANDLE ASSEMBLY DRIVER EXTERIOR DOOR HANDLE SWITCH DRIVER HOOD HANDLE FLOOD LAMP DRIVER LEFT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER OUTSIDE REAR VIEW MIRROR CARGO LAMP DRIVER OUTSIDE REAR VIEW MIRROR FORWARD EXTERIOR FLOOD LAMP DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR VIEW MIRROR LOWER EXTERIOR FLOOD LAMP DRIVER OUTSIDE REAR- VIEW MIRROR DRIVER RIGHT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT LUMBAR SUPPORT SWITCH DRIVER WINDOW/ OUTSIDE REAR VIEW MIRROR SWITCH KEYLESS ENTRY CONTROL MODULE LEFT MIDDLE SIDE MARKER LAMP LEFT PICKUP BOX AUXILIARY ENDGATE LATCH RELAY LEFT PICKUP BOX ENDGATE LATCH RELAY LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR EXTERIOR DOOR HANDLE ASSEMBLY LEFT REAR EXTERIOR DOOR HANDLE SWITCH LEFT REAR WINDOW SWITCH LEFT TURN SIGNAL REPEATER LAMP NCA WIRE PARKING ASSIST CONTROL MODULE PASSENGER DOOR LOCK SWITCH RIGHT PICKUP BOX AUXILIARY ENDGATE LATCH RELAY RIGHT PICKUP BOX ENDGATE LATCH RELAY SEAT MEMORY CONTROL MODULE SLIDING REAR WINDOW CLOSE RELAY SLIDING REAR WINDOW OPEN RELAY W/ FRONT HEATED SEATS W/ KEYLESS START SWITCH W/ MEMORY W/ PUBX END ENHANCED GATE TYPE W/O MEMORY WHT WIRE

8 WAY AUXILIARY AUDIO INPUT AUXILIARY MULTI-FUNCTION SWITCH BLK WIRE BLUNT CUT) CARGO ACCESSORY POWER RECEPTACLE CENTER CONSOLE COMPARTMENT LAMP CENTER CONSOLE REAR ACCESSORY POWER RECEPTACLE CONSOLE REAR USB RECEPTACLE CENTER DRIVER WINDOW MOTOR EXCEPT 8 WAY FRONT SEAT HEATING CONTROL MODULE HIGH, MID LEVEL LEFT FRONT BRAKE PAD WEAR SENSOR LEFT REAR BRAKE PAD WEAR SENSOR LEFT SIDE OBJECT SENSOR MODULE MOBILE DEVICE WIRELESS CHARGER MODULE NCA WIRE PASSENGER BACK SEAT BLOWER MOTOR PASSENGER CUSHION SEAT BLOWER MOTOR PASSENGER DOOR HANDLE FLOOD LAMP PASSENGER DOOR LATCH ASSEMBLY PASSENGER EXTERIOR DOOR HANDLE ASSEMBLY PASSENGER EXTERIOR DOOR HANDLE SWITCH PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR CARGO LAMP PASSENGER OUTSIDE REAR VIEW MIRROR EXTERIOR LOWER FLOOD LAMP PASSENGER OUTSIDE REAR VIEW MIRROR FORWARD EXTERIOR FLOOD LAMP PASSENGER OUTSIDE REAR VIEW MIRROR GLASS PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT LUMBAR SUPPORT SWITCH PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH REAR DEFOGGER GRID REAR SEAT ACCESSORY POWER RECEPTACLE REAR SEAT HEATING SWITCH REAR SEAT USB RECEPTACLE REAR VIEW MIRROR) RIGHT MIDDLE SIDE MARKER LAMP RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR EXTERIOR DOOR HANDLE ASSEMBLY RIGHT REAR EXTERIOR DOOR HANDLE SWITCH RIGHT REAR WINDOW SWITCH RIGHT SIDE OBJECT SENSOR MODULE RIGHT TURN SIGNAL REPEATER LAMP TRAILER BRAKES PROVISION W/ EXPRESS UP/DOWN W/ FRONT HEATED SEATS W/O EXPRESS UP/DOWN W/O FRONT HEATED SEATS WHT WIRE

6.6L TURBO DIESEL AUXILIARY CHASSIS CONTROL MODULE BASE BASE EQUIPMENT BLK WIRE CAMPER TRAILER CONNECTOR ENDGATE MARKER LAMP EXCEPT BASE EXCEPT BASE EQUIPMENT FUEL HEATER/ WATER IN FUEL SENSOR FUEL PUMP DRIVER CONTROL MODULE GMC INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LOGIC NCA WIRE PASSENGER PRESENCE MODULE RIGHT BACKUP LAMP RIGHT CARGO LAMP RIGHT FENDER REAR SIDE MARKER LAMP RIGHT FRONT REAR FENDER CLEARANCE LAMP RIGHT LOWER TAIL/STOP, TURN SIGNAL LAMP RIGHT REAR REAR FENDER CLEARANCE LAMP RIGHT REAR SIDE MARKER LAMP RIGHT STOP/TURN SIGNAL LAMP RIGHT TAIL/ STOP/ TURN SIGNAL LAMP RIGHT UPPER TAIL/STOP, TURN SIGNAL LAMP TRAILER CONNECTOR TRAILER LIGHTING CONTROL MODULE TRAILER TIRE PRESSURE INDICATOR MODULE W/ TRAILER INFORMATION INDICATOR W/O TRAILER INFORMATION INDICATOR WHT WIRE

BASE BASE EQUIPMENT BLK WIRE BRAKE FLUID LEVEL SWITCH ENGINE BRAKE CONTROL MODULE EXCEPT BASE EXCEPT BASE EQUIPMENT EXTERIOR PICKUP BOX ENDGATE CONTROL SWITCH GMC HOOD AJAR SWITCH LEFT BACKUP LAMP LEFT CARGO LAMP LEFT FENDER FRONT SIDE MARKER LAMP LEFT FENDER REAR SIDE MARKER LAMP LEFT FRONT FOG LAMP LEFT FRONT REAR FENDER CLEARANCE LAMP LEFT FRONT SIDE MARKER LAMP LEFT FRONT TURN SIGNAL LAMP LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE LEFT HIGH BEAM HEADLAMP LEFT LICENSE PLATE LAMP LEFT LOW BEAM HEADLAMP LEFT LOWER TAIL/STOP, TURN SIGNAL LAMP LEFT PARK/TURN SIGNAL LAMP LEFT PICKUP BOX AUXILIARY ENDGATE LATCH LEFT REAR REAR FENDER CLEARANCE LAMP LEFT REAR SIDE MARKER LAMP LEFT STOP/TURN SIGNAL LAMP LEFT TAIL/ STOP/ TURN SIGNAL LAMP LEFT UPPER TAIL/STOP, TURN SIGNAL LAMP LIFTGATE COURTESY LAMP LOGIC NCA WIRE PICKUP BOX ENDGATE UNLATCH SWITCH REAR GATE MODULE RIGHT LICENSE PLATE LAMP RIGHT PICKUP BOX AUXILIARY ENDGATE LATCH TRAILER BRAKE POWER CONTROL MODULE UNDERHOOD FUSE BLOCK WINDSHIELD WIPER RELAY WINDSHIELD WASHER FLUID LEVEL SWITCH WINDSHIELD WASHER PUMP WINDSHIELD WIPER MOTOR