GMC Yukon I (1991-1999) i/p fuse block Wiring diagrams

ABS IND. ABS MAXI FUSE 4 BLK WIRE BLK/WHT WIRE BRAKE FUSE 18 BRAKE IND BRAKE SW OUTPUT BRN WIRE DAYTIME RUNNING LAMPS MODULE (LEFT SIDE OF I/P) DIODE 1 (UNDERHOOD FUSE/RELAY CENTER) DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (LEFT FRONT WHEELHOUSE) HOT AT ALL TIMES HOT IN RUN HOT IN RUN, BULB TEST OR START GAUGES FUSE 4 I/P FUSE BLOCK IGN ABS LAMP CONTROL BRAKE SW INPUT INSTRUMENT CLUSTER LEFT FRONT WHEEL SPEED SENSOR LFT FRT SENSOR (-) LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE PNK WIRE PPL PPL BRAKE PRESSURE WARNING SWITCH PPL PPL PPL/WHT WIRE PUMP MOTOR POWER PUMP MOTOR GROUND RED WIRE RIGHT FRONT WHEEL SPEED SENSOR RT FRT SENSOR (-) LFT FRT SENSOR (+) RT FRT SENSOR (+) TAN WIRE TAN/WHT WIRE TCC/ STOPLAMP SWITCH (TOP OF BRAKE PEDAL) UNDERHOOD FUSE-RELAY CENTER VEHICLE CONTROL MODULE (LEFT FRONT WHEELHOUSE) VEHICLE SPEED SENSOR (LEFT SIDE OF TRANSMISSION/ TRANSFER CASE) VEHICLE SPEED SIG VSS VSS SIG SERIAL DATA LINE SERIAL DATA LINE BRAKE LAMP CONTROL EBCM GROUND WHT WIRE YEL WIRE

4000 PULSES/MILE CRUISE STATUS BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE FUSE 18 STOP/HAZ FUSE 1 BRN WIRE BRN/WHT WIRE CLUTCH PEDAL SWITCH (TOP OF CLUTCH PEDAL) CRUISE CONTROL MODULE (FRONT OF ENGINE COMPT NEAR LEFT FENDER) CRUISE CONTROL SWITCH CRUISE FUSE 6 CRUISE ON INPUT SET/COAST INPUT RESUME/ACCEL INPUT CRUISE STATUS VEHICLE SPEED INPUT DISENGAGE INPUT GROUND IGNITION BRAKE APPLIED INPUT DK BLU WIRE DK GRN/WHT WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN I/P FUSE BLOCK LT BLU/BLK WIRE LT GRN/BLK WIRE M/T A/T OFF OR 379 451 ORG/ WIRE PPL PPL/WHT WIRE R/A S/C DK TCC/STOPLAMP BRAKE SWITCH (TOP OF BRAKE PEDAL) VEHICLE CONTROL MODULE (VCM) (IN ENGINE COMPT, ON LEFT FENDER) VEHICLE SPEED SENSOR (VSS) (LEFT SIDE OF TRANSMISSION) VSS RETURN VSS SIGNAL WHT WIRE

A/T ONLY ABS IND. ABS MAXI FUSE 4 BLK WIRE BLK/WHT WIRE BRAKE FUSE 18 BRAKE IND BRAKE PRESSURE WARNING SWITCH BRN WIRE DAYTIME RUNNING LAMPS MODULE (BELOW LEFT SIDE OF I/P) DIODE 1 (UNDERHOOD FUSE/RELAY CENTER) DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (LEFT FRONT SIDE OF FRAME) HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START GAUGES FUSE 4 I/P FUSE BLOCK IGN ABS LAMP CONTROL BRAKE SW INPUT INPUT INSTRUMENT CLUSTER LEFT FRONT WHEEL SPEED SENSOR LFT FRT SENSOR (-) LT BLU WIRE LT GRN WIRE NCA WIRE PNK WIRE POWERTRAIN CONTROL MODULE (RIGHT SIDE OF I/P) PPL PPL PPL PUMP MOTOR POWER PUMP MOTOR GROUND RED WIRE RIGHT FRONT WHEEL SPEED SENSOR RT FRT SENSOR (-) LFT FRT SENSOR (+) RT FRT SENSOR (+) TAN WIRE TAN/WHT WIRE TCC/ STOPLAMP SWITCH (TOP OF BRAKE PEDAL) UNDERHOOD FUSE-RELAY CENTER VEHICLE SPEED SENSOR BUFFER (NEAR STEERING COLUMN) VSS SIG OUT VSS SIG SERIAL DATA LINE SERIAL DATA SIGNAL BRAKE LAMP CONTROL EBCM GROUND YEL WIRE YEL/BLK WIRE

3 2 PPL AUX PWR FUSE 7 BLK WIRE BLK/WHT WIRE DATA LINK CONNECTOR (LEFT SIDE OF I/P) DIESEL GASOLINE DK GRN WIRE DLC CONTROL ELECTRONIC BRAKE CONTROL MODULE (LEFT FRONT WHEELHOUSE) HOT AT ALL TIMES I/P FUSE BLOCK INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE (UNDER DRIVER'S SEAT CARPET) ORG/ WIRE POWER STEERING CONTROL MODULE (CENTER OF I/P) DATA CLSS POWERTRAIN CONTROL MODULE (RIGHT SIDE OF I/P) DATA CLSS PPL PPL DATA CLSS 2 PROG ENABLE RADIO REMOTE CONTROL DOOR LOCK RECEIVER (BEHIND CENTER OF I/P) SERIAL DATA TAN WIRE TAN/WHT WIRE TRANSFER CASE CONTROL MODULE (STEERING COLUMN SUPPORT BRACKET) UART DATA VEHICLE CONTROL MODULE (ENGINE COMPT, NEAR EBCM)

BLK WIRE BRN WIRE HOT IN RUN HOT IN RUN OR START HTR A/C FUSE 12 HVAC CONTROL MODULE I/P FUSE BLOCK ORG/ WIRE PICK-UP W/ EXTENDED OR CREW CAB PPL PPL PPL PPL/WHT WIRE REAR DEFOGGER SWITCH REAR WINDOW DEFOGGER GRID RIGHT CARGO DOOR CONTACTOR LEFT CARGO DOOR CONTACTOR RIGHT REAR CARGO DOOR DEFOGGER GRID LEFT REAR CARGO DOOR DEFOGGER GRID RR-DEFOG MINI FUSE SOLID STATE TIME DELAY RELAY SUBURBAN/UTILITY W/ LIFTGATE SUBURBAN/UTILITY W/O LIFTGATE UNDERHOOD FUSE/RELAY CENTER

BATTERY FEED EVO SOL OUTPUT BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC VARIABLE ORIFICE (EVO) SOLENOID (ON STEERING PUMP) EVO SOL FEED GAUGES FUSE 4 GROUND GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK LT BLU WIRE ORG/ WIRE ORG/BLK WIRE PNK PPL IGNITION SRL DATA CLASS 13 SENSOR RETURN 5 VOLT REF WIRE PNK WIRE POS SIG VOLT OUT REF POSITION SIGNAL VSS SIGNAL INPUT POWER STEERING CONTROL MODULE (PSCM) (UNDER CENTER OF I/P) PPL PPL (I/P HARN, APPROX 5 CM INTO DATA LINK CONNECTOR BREAKOUT) SECURITY FUSE 21 STEERING WHEEL POSITION SENSOR (ON STEERING COLUMN) SEN RTN VEHICLE CONTROL MODULE (VCM) (IN ENGINE COMPT) VSS OUT WHT WIRE

14 15 16 PNK WIRE 16 PPL 5 6 7 PNK WIRE AUTOMATIC TRANSMISSION INPUT SHAFT SPEED (A/T ISS) SENSOR BALANCE FUEL PUMP (ON INSIDE LEFT FRAME RAIL NEAR FRONT OF REAR TANK) BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE EVAPORATIVE EMISSION CANISTER VACUUM SWITCH (RIGHT SIDE OF ENGINE) FUEL PUMP BALANCE RELAY (ON FUEL PUMP BALANCE MODULE) FUEL PUMP, SENDER (IN FUEL TANK) FUEL PUMP/ OIL PRESSURE SWITCH (TOP CENTER REAR OF ENGINE, BEHIND DISTRIBUTOR) GAUGES FUSE 4 GRN WIRE GRY WIRE HOT IN OFF, RUN OR START HOT IN RUN OR START I/P FUSE BLOCK IGN E MINI FUSE INPUT FUEL GAUGE INPUT OIL GAUGE INPUT TACHOMETER INSTRUMENT CLUSTER INTAKE AIR TEMPERATURE SENSOR (IN AIR INTAKE DUCT) LT BLU/WHT WIRE LT GRN WIRE M/T ONLY PPL MAP SENSOR (TOP RIGHT CENTER OF ENGINE, NEAR FUEL INJECTORS) MASS AIR FLOW SENSOR (AIR INTAKE DUCT NEAR AIR FILTER) ORG/ WIRE PNK IGNITION WIRE PNK PNK PNK WIRE PNK WIRE PPL PPL (NOT USED) PPL OUTPUT TO GAGE PRIMARY TANK FUEL LEVEL SIGNAL RED WIRE RED/BLK WIRE RELAY CTRL SERVICE ENGINE SOON INDICATOR SPEEDOMETER INPUT TAN WIRE TAN/BLK WIRE THROTTLE POSITION SENSOR (ON SIDE OF THROTTLE BODY) TRANS FUSE 20 UNDERHOOD FUSE-RELAY CENTER UPSHIFT LAMP W/DUAL FUEL TANKS W/DUAL FUEL TANKS W/O DUAL FUEL TANKS W/O DUAL FUEL TANKS W/O DUAL FUEL TANKS W/DUAL FUEL TANKS WHT WIRE YEL WIRE

23 24 FOUR WHL DR SIG LO CRUISE CTRL SIG ENG 900 900 SERVICE CIRCUIT POWER SERVICE CIRCUIT POWER A/C REQUEST SIGNAL AIR CONDITIONING SYSTEM BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BRAKE FUSE 18 BRAKE SWITCH ASSEMBLY (TOP OF BRAKE PEDAL) BRN WIRE BRN/WHT WIRE CLUTCH PEDAL POSITION SWITCH (AT TOP OF CLUTCH PEDAL) COOLING FANS SYSTEM CRUISE CONTROL MODULE (LEFT REAR SIDE OF ENGINE COMPARTMENT, ON BULKHEAD) DATA LINK CONNECTOR (UNDER LEFT SIDE OF I/P) DISTRIBUTOR DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-B MINI FUSE FORCE MOTOR FEED TRANS INPUT SPEED RTN TRANS INPUT SPEED SIG EST OUTPUT SIG FUEL PUMP PRIME CONNECTOR FUEL PUMP RELAY FUEL PUMP RLY CTRL 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 GRN WIRE GROUND GRY WIRE GRY/BLK WIRE HIGH VOLTAGE COIL WIRE HOT AT ALL TIMES UNDERHOOD FUSE-RELAY CENTER HOT IN RUN I/P FUSE BLOCK IGN BRAKE INPUT INPUT INPUT SW INPUT IGNITION COIL (RIGHT REAR SIDE OF ENGINE) IGNITION COIL DRIVER (RIGHT REAR SIDE OF ENGINE) IGNITION FEED IGN TIMING SIG. IGN COIL OUT IGNITION PRESSURE SWITCH INPUT PRESSURE SWITCH INPUT LT BLU/BLK WIRE LT BLU/WHT WIRE LT VSS ORG/ WIRE PNK IGNITION FOUR WHL DR SIG WIRE PNK PNK PNK WIRE PNK WIRE POWER STEERING CONTROL MODULE (CENTER OF I/P) PPL PPL (OR PPL A/T M/T PPL PPL PPL PPL 420 1807 950 BRAKE SWITCH INPUT SERIAL DATA SIG VCM GROUND IGNITION PPL PPL 420 OR PRESSURE SWITCH INPUT RADIO RED WIRE RED/BLK WIRE SENSOR RETURN SHIFT IND LP OUT SPEED SENSOR SPEED STOPLAMP/ VCM SENSOR CLUTCH SIG INPUT SWITCH INPUT SWITCH SIGNAL TAN/BLK WIRE TRANSFER CASE CONTROL MODULE (UNDER I/P, ON STEERING COLUMN SUPPORT BRACKET) TRANSFER CASE SWITCH (LEFT TOP OF TRANSFER CASE) TRANSMISSIONS SYSTEM (FOUR WHEEL DRIVE INDICATOR CIRCUIT UNDERHOOD FUSE-RELAY CENTER VSS SIG OUT VSS SIG OUT CHECK ENG LP CTRL AUX FAN RELAY 389 419 WHT WIRE WHT/BLK WIRE

27 28 29 30 31 PPL 5 VOLT REF BLK WIRE BLU WIRE BRAKE FUSE 18 BRAKE SWITCH ASSEMBLY (AT REAR OF BRAKE PEDAL SUPPORT BRACKET) BRN WIRE CLUTCH PEDAL POSITION (CPP) SWITCH (M/T ONLY) (TOP OF CLUTCH PEDAL) CMP SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK PNK WIRE ECM FUSE FUEL SOL FUSE ELECTRONIC BRAKE CONTROL MODULE (LEFT FRAME RAIL, NEAR CENTER OF VEHICLE) ENGINE SHUTOFF FUEL SOLENOID SOLENOID DRIVER FUEL SOLENOID FUEL TEMPERATURE SENSOR GRN WIRE GRY WIRE HIGH RES SIG HOT AT ALL TIMES HOT IN HOT IN RUN OR START I/P FUSE BLOCK LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK PNK 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 WIRE PNK PNK 8 9 WIRE PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL (OR BRN/WHT) WIRE PPL PNK WIRE RED WIRE RED/BLK WIRE RUN WIRE SENS GRD STOP/HAZ FUSE 1 TAN WIRE TAN/BLK WIRE TIMING STEPPER MOTOR (TOP FRONT OF ENGINE) TRANS FUSE 20 UNDERHOOD FUSE-RELAY CENTER WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

"GLOW PLUGS" INDICATOR BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-B FUSE FUEL LIFT PUMP (LEFT FRAME RAIL, BELOW DRIVER'S DOOR) W/DUAL TANKS FUEL PUMP PRIME CONNECTOR FUEL PUMP RELAY (IN UNDERHOOD FUSE-RELAY CENTER) FUEL PUMP/ OIL PRESSURE SWITCH AND SENDER (LEFT REAR OF ENGINE) GAUGES FUSE 4 GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK INSTRUMENT CLUSTER INSTRUMENT CLUSTER SYSTEM INSTRUMENT CLUSTER SYSTEM (FUEL PUMP BALANCE RELAY) LT GRN WIRE ORG/ WIRE PNK PNK 8 9 WIRE PNK PNK PNK WIRE PNK WIRE RED WIRE SERVICE ENGINE SOON INDICATOR SERVICE THROTTLE SOON INDICATOR TAN WIRE UNDERHOOD FUSE-RELAY CENTER VEHICLE SPEED INPUT W/DUAL TANKS W/O DUAL TANKS WAIT TO WATER IN FUEL INDICATOR WATER IN-FUEL SENSOR WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE