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GMC Suburban K2500 (1985-1999) brn Wiring diagrams

This page contains all the electrical diagrams for the component. brn, in which he is found in the car GMC Suburban K2500 (1985-1999). You can view various wiring diagrams where this component is used, as well as go to more detailed diagrams to see the complete connection and interaction in the system. All diagrams have links to quickly jump to the corresponding section with the component for easy viewing..

brn wiring diagram (161 of 173)

GMC Suburban K2500 (1985-1999) brn wiring diagram (161 of 173)

2-HI IND 4-HI IND 4-LO IND AUTO AUTOMATIC TRANSFER CASE CONTROL MODULE (BEHIND LEFT SIDE OF DASH) AUTOMATIC TRANSFER CASE SELECT SWITCH AWD IND AXLE CTRL AXLE SW B+ GND MOTOR FEED (CCW) MOTOR FEED (CW) BLK WIRE BLK/WHT WIRE BRAKE CONTROL BRN WIRE BRN/WHT WIRE DIESEL GASOLINE DK BLU/WHT WIRE DK GRN WIRE ENCODER LOGIC ENCODER MOTOR ASSEMBLY ENCODER SIG RTN FRONT AXLE ACTUATOR FRONT DRIVE SHAFT SPEED SENSOR REAR DRIVE SHAFT SPEED SENSOR FT SHAFT SPEED SIG FT SHAFT SPEED RTN FUSE 24 GAUGES FUSE 4 GRY WIRE GRY/BLK WIRE HEADLAMP/ DIMMER PANEL SWITCH PNK WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START HOT WITH HEADLIGHT SW IN PARK OR HEAD I/P FUSE BLOCK (UNDER LEFT SIDE OF DASH) ILLUM FUSE 14 ILLUMINATION LAMP (2) IND INSTRUMENT CLUSTER LOW SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE NEUTRAL IND ORG/ WIRE PARK PARK/ NEUTRAL POSITION SWITCH PNK WIRE PNP SW-PARK SIG IN PPL PPL/WHT WIRE PWR RED WIRE RED/WHT WIRE REF SERVICE SHIFT MOTOR SOLID STATE STOP LAMP SWITCH T CASE FUSE 2 TAN WIRE TAN/BLK WIRE VEHICLE CONTROL MODULE (GASOLINE) (LEFT SIDE OF ENGINE COMPT) YEL WIRE YEL/BLK WIRE

Go to component -> 4wd circuit, with auto trac -> BRN WIRE

brn wiring diagram (162 of 173)

GMC Suburban K2500 (1985-1999) brn wiring diagram (162 of 173)

2-HI IND 4-HI IND 4-LO IND AUTO AUTOMATIC TRANSFER CASE CONTROL MODULE (BEHIND LEFT SIDE OF DASH) AUTOMATIC TRANSFER CASE SELECT SWITCH AWD IND AXLE CTRL AXLE SW B+ GND MOTOR FEED (CCW) MOTOR FEED (CW) BLK WIRE BLK/WHT WIRE BRAKE CONTROL BRN WIRE BRN/WHT WIRE DIESEL GASOLINE DK BLU/WHT WIRE DK GRN WIRE ENCODER LOGIC ENCODER MOTOR ASSEMBLY ENCODER SIG RTN FRONT AXLE ACTUATOR FRONT DRIVE SHAFT SPEED SENSOR REAR DRIVE SHAFT SPEED SENSOR FT SHAFT SPEED SIG FT SHAFT SPEED RTN FUSE 24 GAUGES FUSE 4 GRY WIRE GRY/BLK WIRE HEADLAMP/ DIMMER PANEL SWITCH PNK WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START HOT WITH HEADLIGHT SW IN PARK OR HEAD I/P FUSE BLOCK (UNDER LEFT SIDE OF DASH) ILLUM FUSE 14 ILLUMINATION LAMP (2) IND INSTRUMENT CLUSTER LOW SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE NEUTRAL IND ORG/ WIRE PARK PARK/ NEUTRAL POSITION SWITCH PNK WIRE PNP SW-PARK SIG IN PPL PPL/WHT WIRE PWR RED WIRE RED/WHT WIRE REF SERVICE SHIFT MOTOR SOLID STATE STOP LAMP SWITCH T CASE FUSE 2 TAN WIRE TAN/BLK WIRE VEHICLE CONTROL MODULE (GASOLINE) (LEFT SIDE OF ENGINE COMPT) YEL WIRE YEL/BLK WIRE

Go to component -> 4wd circuit, with auto trac -> BRN WIRE

brn wiring diagram (163 of 173)

GMC Suburban K2500 (1985-1999) brn wiring diagram (163 of 173)

2-HI IND 4-HI IND 4-LO IND AUTO AUTOMATIC TRANSFER CASE CONTROL MODULE (BEHIND LEFT SIDE OF DASH) AUTOMATIC TRANSFER CASE SELECT SWITCH AWD IND AXLE CTRL AXLE SW B+ GND MOTOR FEED (CCW) MOTOR FEED (CW) BLK WIRE BLK/WHT WIRE BRAKE CONTROL BRN WIRE BRN/WHT WIRE DIESEL GASOLINE DK BLU/WHT WIRE DK GRN WIRE ENCODER LOGIC ENCODER MOTOR ASSEMBLY ENCODER SIG RTN FRONT AXLE ACTUATOR FRONT DRIVE SHAFT SPEED SENSOR REAR DRIVE SHAFT SPEED SENSOR FT SHAFT SPEED SIG FT SHAFT SPEED RTN FUSE 24 GAUGES FUSE 4 GRY WIRE GRY/BLK WIRE HEADLAMP/ DIMMER PANEL SWITCH PNK WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START HOT WITH HEADLIGHT SW IN PARK OR HEAD I/P FUSE BLOCK (UNDER LEFT SIDE OF DASH) ILLUM FUSE 14 ILLUMINATION LAMP (2) IND INSTRUMENT CLUSTER LOW SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE NEUTRAL IND ORG/ WIRE PARK PARK/ NEUTRAL POSITION SWITCH PNK WIRE PNP SW-PARK SIG IN PPL PPL/WHT WIRE PWR RED WIRE RED/WHT WIRE REF SERVICE SHIFT MOTOR SOLID STATE STOP LAMP SWITCH T CASE FUSE 2 TAN WIRE TAN/BLK WIRE VEHICLE CONTROL MODULE (GASOLINE) (LEFT SIDE OF ENGINE COMPT) YEL WIRE YEL/BLK WIRE

Go to component -> 4wd circuit, with auto trac -> BRN WIRE

brn wiring diagram (164 of 173)

GMC Suburban K2500 (1985-1999) brn wiring diagram (164 of 173)

AUXILIARY BATTERY RELAY BLK WIRE BLK/WHT WIRE BRN WIRE DIESEL FRONT AXLE ACTUATOR FUSE 24 GASOLINE GRY WIRE GRY/BLK WIRE HARN) HOT IN PARK OR HEAD HOT IN RUN I/P FUSE BLOCK (LEFT SIDE OF DASH, ILLUM FUSE 14 INDICATOR LT BLU WIRE M/T A/T POWERTRAIN CONTROL MODULE (BEHIND RIGHT RED WIRE SIDE OF DASH) TIMER LOGIC, RELAY MODULE (RIGHT SIDE OF FIREWALL) TRANSFER CASE MODE SELECTOR ILLUMINATION LAMP TRANSFER CASE SYNCHRONIZER (TOP OF TRANSFER CASE) VEHICLE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT)

Go to component -> 4wd circuit, without electronic shift control, with heavy duty transmissio -> BRN WIRE

brn wiring diagram (165 of 173)

GMC Suburban K2500 (1985-1999) brn wiring diagram (165 of 173)

AUXILIARY BATTERY RELAY BLK WIRE BLK/WHT WIRE BRN WIRE DIESEL FRONT AXLE ACTUATOR FUSE 24 GASOLINE GRY WIRE GRY/BLK WIRE HARN) HOT IN PARK OR HEAD HOT IN RUN I/P FUSE BLOCK (LEFT SIDE OF DASH, ILLUM FUSE 14 INDICATOR LT BLU WIRE M/T A/T POWERTRAIN CONTROL MODULE (BEHIND RIGHT RED WIRE SIDE OF DASH) TIMER LOGIC, RELAY MODULE (RIGHT SIDE OF FIREWALL) TRANSFER CASE MODE SELECTOR ILLUMINATION LAMP TRANSFER CASE SYNCHRONIZER (TOP OF TRANSFER CASE) VEHICLE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT)

Go to component -> 4wd circuit, without electronic shift control, with heavy duty transmissio -> BRN WIRE

brn wiring diagram (166 of 173)

GMC Suburban K2500 (1985-1999) brn wiring diagram (166 of 173)

1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID 29 30 VSS LO (GROUND) VSS HI (SIGNAL) ANTI-LOCK BRAKES SYSTEM AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BRAKE FUSE 18 BRN WIRE BRN/WHT WIRE CRUISE CONTROL DK BLU WIRE ECM 1 FUSE ECM-B FUSE ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROLS ENGINE COOLANT TEMPERATURE SENSOR (TOP RIGHT FRONT OF ENGINE) FLUID TEMP SENSOR FRONT WHEEL LOCK FUEL INJECTORS, IGNITION CONTROL MOUDULE, IGNITION COIL FUEL PUMP, OIL PRESS SWITCH/ SENDER, FUEL PUMP RELAY GRY WIRE GRY/BLK WIRE HI LO HOT AT ALL TIMES HOT IN HOT IN OFF, RUN OR START HOT IN RUN OR START HOT IN RUN OR START I/P FUSE BLOCK (UNDER LEFT SIDE OF DSAH) GAUGES FUSE 4 I/P FUSE BLOCK (UNDER LEFT SIDE OF DASH) INLINE GENDER ADAPTOR INSTRUMENT CLUSTER LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE PNK PNK WIRE PNK WIRE PPL PPL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL/WHT WIRE PRESS CTRL SOLENOID RED WIRE RED/BLK WIRE REV, LO RUN WIRE TAN WIRE TCC PWM SOLENOID TCC/ABS/ CRUISE SWITCH THROTTLE POSITION SENSOR (MOUNTED TO SIDE OF THROTTLE BODY) TRANS FUSE 20 TRANS RANGE PRESSURE SWITCH ASSEMBLY TRANSFER CASE CIRCUIT TRANSFER CASE, AXLE SWITCHES UNDERHOOD FUSE/RELAY CENTER (LEFT REAR OF ENGINE COMPT) VEHICLE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (LEFT SIDE OF YEL WIRE YEL/BLK WIRE

Go to component -> 5.7l vin r, a/t circuit, 4l80-e -> BRN WIRE

brn wiring diagram (167 of 173)

GMC Suburban K2500 (1985-1999) brn wiring diagram (167 of 173)

1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID A/T ISS SENSOR VSS IN SENSOR GROUND SENSOR GROUND APP 1 SIGNAL IN ACCELERATOR PEDAL POSITION MODULE (PART OF ACCELERATOR PEDAL) APP 3 SIGNAL IN SENSOR GROUND A/T ISS SENS LO AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BRAKE FUSE 18 BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE ECM-B FUSE ELECTRONIC BRAKE CONTROL MODULE PPL ENGINE CONTROLS SYSTEM ENGINE SHUTOFF SOLENOID, FUEL SOLENOID EXTERIOR LIGHTS FUEL PUMP, OIL PRESS SWITCH/ SENDER, FUEL PUMP RELAY GAUGES FUSE 4 GRY WIRE GRY/BLK WIRE HI LO HOT AT ALL TIMES HOT IN HOT IN RUN OR START I/P FUSE BLOCK (UNDER LEFT SIDE OF DASH) INLINE GENDER ADAPTOR INSTRUMENT CLUSTER LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE PNK PPL WIRE PNK WIRE POWERTRAIN CONTROL MODULE (RIGHT SIDE OF DASH NEAR BLOWER MOTOR) PPL PPL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL PNK PNK WIRE PPL PRESS CTRL SOLENOID PPL/WHT WIRE RED WIRE RED/BLK WIRE RUN WIRE STOP/HAZ FUSE 1 TAN WIRE TAN/WHT WIRE TCC PWM SOLENOID TRANS FLUID TEMP SENSOR TRANS FUSE 20 TRANS RANGE PNK PNK REV, LO WIRE TRANS RANGE PRESSURE SWITCH ASSEMBLY TRANSFER CASE CIRCUIT TRANSFER CASE CIRCUIT PNK WIRE TURN/ HAZARD SWITCH, CHIME MODULE VEHICLE SPEED SENSOR (LEFT SIDE OF VEHICLE SPEED SENSOR BUFFER (RIGHT SIDE OF DASH) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

Go to component -> 6.5l vin f, a/t circuit, 4l80-e -> BRN WIRE

brn wiring diagram (168 of 173)

GMC Suburban K2500 (1985-1999) brn wiring diagram (168 of 173)

BLK WIRE BRN WIRE GAUGES FUSE 4 GRY WIRE HEADLAMP AMBIENT SENSOR SENSOR (MIRROR (WINDSHIELD SIDE) SIDE) HOT IN RUN OR START I/P FUSE BLOCK (UNDER LEFT SIDE OF DASH) INSIDE AUTOMATIC DAY-NIGHT MIRROR LEFT OUTSIDE AUTOMATIC DAY-NIGHT MIRROR LT GRN WIRE MANUAL TRANSMISSION AUTOMATIC TRANSMISSION MIRROR INPUT MIRRORS SWITCH NCA WIRE OFF C/M PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM RIGHT OUTSIDE AUTOMATIC DAY-NIGHT MIRROR T/M TEMPERATURE SENSOR (IN ENGINE COMPARTMENT, NEAR LOWER RADIATOR SUPPORT) TURN B/U FUSE 16

Go to component -> Electrochromic mirror circuit -> BRN WIRE

brn wiring diagram (169 of 173)

GMC Suburban K2500 (1985-1999) brn wiring diagram (169 of 173)

BLK WIRE BLK/RED WIRE BRN WIRE CONVENIENCE CENTER FRONT HEATED SEATS FUSE HEATED SEAT SW SIG HIGH/LOW SIG HOT AT ALL TIME HOT IN RUN RR HVAC FUSE 5 I/P FUSE BLOCK INDICATOR LMP FEED LEFT FRONT HEATED SEAT MODULE (UNDER LEFT FRONT POWER SEAT) LEFT FRONT HEATED SEAT SWITCH LEFT FRONT LEFT FRONT SEAT CUSHION SEAT TEMPER- ELEMENT ATURE SENSOR LEFT FRONT SEAT BACK ELEMENT LEFT FRONT SEAT CUSHION LT BLU WIRE LT BLU/BLK WIRE OFF OFF LO ORG/ WIRE PNK/BLK WIRE PPL RIGHT FRONT HEATED SEAT MODULE (UNDER RIGHT FRONT POWER SEAT) RIGHT FRONT HEATED SEAT SWITCH RIGHT FRONT SEAT BACK ELEMENT RIGHT FRONT SEAT BEALT SWITCH RIGHT FRONT SEAT CUSHION ELEMENT RIGHT FRONT SEAT TEMPER- ATURE SENSOR SIG ENABLE UNDERHOOD FUSE/RELAY CENTER YEL WIRE

Go to component -> Front seat heater circuit -> BRN WIRE

brn wiring diagram (170 of 173)

GMC Suburban K2500 (1985-1999) brn wiring diagram (170 of 173)

AUTOMATIC TRANSFER CASE CONTROL MODULE AUTOMATIC TRANSFER CASE ONLY AUTOMATIC TRANSFER CASE SELECT SWITCH AUXILIARY AUXILIARY TEMPERATURE HIGH BLOWER DOOR MOTOR MOTOR RELAY AUXILIARY BATTERY AUXILIARY BATTERY RELAY (LEFT REAR OF ENGINE COMPT) AUXILIARY HEATER AND A/C CONTROL LOGIC MODULE AUXILIARY HEATER AND A/C CONTROL MODULE (FRONT) AUXILIARY HEATER AND A/C CONTROL MODULE (REAR) AUXILIARY MEDIUM BLOWER MOTOR RELAY BLK WIRE BLK/RED WIRE BLU WIRE BRAKE FUSE 18 BREAKOUT) BRN WIRE COLUMN HARNESS BREAKOUT) CONVENIENCE CENTER CROSSBODY HARN, 20 CM FROM SDM BREAKOUT) CRUISE CONTROL MODULE (GAS ONLY) CRUISE CONTROL SWITCH CRUISE FUSE 6 ELECTRONIC BRAKE CONTROL MODULE FROM BREAKOUT TO GROUND AT LEFT SIDE FRAME RAIL, NEAR CROSSMEMBER) FROM IGNITION SWITCH (DIAGRAM 3 OF 6) FROM UNDERHOOD FUSE-RELAY CENTER (DIAGRAM 1 OF 6) FROM UNDERHOOD FUSE-RELAY CENTER (DIAGRAM 3 OF 6) FRONT AXLE ACTUATOR FRONT HEATED SEATS FUSE FUSE 24 FUSIBLE LINK GAS, BASE MODELS DIESEL GAS, OTHERS MODELS HTR A/C FUSE 12 HVAC CONTROL MODULE I/P FUSE BLOCK LEFT FRONT FENDER) LEFT FRONT HEATED SEAT MODULE LEFT REAR HEATED SEAT MODULE LEFT REAR HEATED SEAT SWITCH MODE DOOR MOTOR MOTOR RELAYS) ORG/ WIRE REAR HEATED SEATS FUSE REAR HEATER REAR HEATER W/ W/ REAR CARGO LIFT- HEATER DOORS GATE ONLY RECIRCULATION TEMPERATURE DOOR DOOR MOTOR MOTOR RED WIRE RESTRAINT SWITCH BREAKOUT) RIGHT FRONT HEATED SEAT MODULE RR HVAC FUSE 5 SEATS FUSE STOP LAMP SWITCH SUBURBAN, UTILITY ONLY TRANSFER SPARE CASE POWER SWITCH SOURCE UNDERHOOD FUSE-RELAY CENTER UPPER LEVEL VEHICLE CONTROL MODULE (GAS ONLY) W/ REAR DEFROST

Go to component -> Power distribution circuit (5 of 6) -> BRN WIRE

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