Chevrolet Tahoe II (1999-2006) run Wiring diagrams

A/C COMP CL RLY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C LOW PRESSURE SWITCH (RIGHT SIDE OF ACCUMULATOR) A/C ON A/C RECIRC A/C REF PRE SENS SIG A/C REFRIGERANT PRESSURE SENSOR (IN HIGH SIDE PRESSURE LINE) AMBIENT AIR TEMPERATURE SENSOR (IN RIGHT FRONT BUMPER FILLER ASSEMBLY AUTO BLK WIRE BLK/WHT WIRE BLOWER FUSE BLOWER MOTOR (RIGHT SIDE OF DASH) BLOWER MOTOR CONTROL PROCESSOR (BEHIND RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CLASS 2 SER DATA CLASS 2 SERIAL DATA DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FAN DN FAN UP FRT DEF GROUND GROUND TEMP SEN ASS CTRL BLOWER SPEED CTRL GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES A/C COMP FUSE HOT IN HOT IN RUN OR START IGN E FUSE HVAC 1 FUSE HVAC CONTROL MODULE (BEHIND CENTER OF DASH) HVAC/ ECAS FUSE I/P RELAY BLOCK (LEFT SIDE OF DASH) INSIDE AIR TEMPERATURE SENSOR ASSEMBLY (IN HEADLINER ABOVE DRIVER) INST LAMP DIM CTRL GROUND LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT TEMP CONTROL LO PRESS SENS SIG RT TEMP DOOR CTRL LT TEMP DOOR CTRL LOGIC LOW REF LOWER LEFT AIR TEMPERATURE SENSOR (LEFT END OF HVAC MODULE) LOWER RIGHT AIR TEMPERATURE SENSOR (BOTTOM OF HVAC MODULE) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODE MODE DOOR CTRL MODE DOOR CTRL IGN 3 LOW REF B(+) OFF ORG/ WIRE POWERTRAIN CONTROL MODULE OR ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL/WHT WIRE RECIR RECIR DOOR CTRL RT TEMP DOOR CTRL LT TEMP DOOR CTRL RED WIRE RED/BLK WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT TEMP CONTROL RUN WIRE SPEED CTRL B(+) GROUND TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) UPPER LEFT AIR TEMPERATURE SENSOR (BELOW DASH TRIM PANEL) UPPER RIGHT AIR TEMPERATURE SENSOR (BELOW DASH TRIM PANEL) WHT WIRE WHT/BLK WIRE YEL WIRE

AIR TEMP DOOR SIG MODE DOOR SIG AUXILIARY AIR TEMPERATURE ACTUATOR (ON AUXILIARY HVAC MODULE ASSEMBLY) AUXILIARY BLOWER MOTOR CONTROL PROCESSOR (BELOW AUXILIARY BLOWER MOTOR) AUXILIARY HVAC CONTROL MODULE (RIGHT REAR OF VEHICLE) AUXILIARY MODE ACTUATOR (ON AUXILIARY HVAC MODULE ASSEMBLY) AUXILIARYBLOWER MOTOR B(+) CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BLOWER CONTROL BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK/BLU WIRE ECC FUSE FRONT AUXILIARY HVAC CONTROL ASSEMBLY FT BLOW MT SW CTRL FT MODE SW SIG GROUND GROUND AIR TEMP DOOR CTRL FT MODE SW SIG B(+) CLASS 2 SER DATA GROUND GROUND LO AIR TEMP SEN SIG BLOWER MT SP CTRL GROUND GROUND LOW REF GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN I/P RELAY BLOCK (LOWER LEFT SIDE OF DASH) IGN 3 FUSE INSIDE AIR TEMP CTRL FT BLOWER MT SW SIG LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LOW REF LOWER AUXILIARY AIR TEMPERATURE SENSOR (BEHIND RIGHT "C" PILLAR, FRONT OF HVAC) LT BLU WIRE ORG/ WIRE PANEL LP DIM CTRL FT AIR TEMP SW SIG POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE RADIO FUSE REAR SEAT AUDIO (RSA) CONTROLLER RR HVAC FUSE RUN WIRE SPEED CTRL B(+) GROUND TAN WIRE TEMP CONTROL UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

5 VOLT REF RELAY CONTROL 7 3 BATT+ STEERING POST SIG A AUTOMATIC LEVEL CONTROL (ALC) COMPRESSOR RELAY (NEAR UNDERHOOD FUSE BLOCK) AVALANCHE/ ESCALADE EXT BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMPRESSOR MOTOR COMPRESSOR/ LEVELING MODULE COMPUTER DATA LINES SYSTEM CRUISE FUSE DATA LINES DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE EXCEPT ALL ESCALADE EXT OTHERS EXCEPT AVALANCHE/ ESCALADE EXT EXHAUST SOL GROUND GRY WIRE HOT AT ALL TIMES HOT IN IGN 3 FUSE LEFT FRONT SUSPENSION DAMPER SOLENOID LEFT I/P FUSE BLOCK (BEHIND LOWER LEFT SIDE OF DASH) LEFT REAR SUSPENSION DAMPER SOLENOID LF DAMP SERVO RR DAMP SERVO STEERING MARKER SIG LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE ORG/ WIRE PNK WIRE PNK/WHT WIRE POWERTRAIN CONTROL MODULE (PCM) (AT LEFT FRONT OF ENGINE COMPT) PPL/WHT WIRE PRESSURE SENSOR RED WIRE RED/BLK WIRE RIGHT FRONT SUSPENSION DAMPER SOLENOID RIGHT REAR SUSPENSION DAMPER SOLENOID RIGHT REAR SUSPENSION POSITION SENSOR (RIGHT REAR FRAME RAIL) RTD FUSE RUN WIRE SENSOR SIGNAL SPLICE PACK STEERING MARKER SIG STEERING POST SIG B STEERING POST SIG B SOLENOID CONTROL STEERING POST SIG A STUD 1 FUSE TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE

A/C COMP CL RLY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C LOW PRESSURE SWITCH (RIGHT SIDE OF ACCUMULATOR) A/C ON SWITCH A/C RECIRC A/C REF PRE SENS SIG A/C REFRIGERANT PRESSURE SENSOR (IN HIGH SIDE PRESSURE LINE) BLK WIRE BLK/WHT WIRE BLOWER FUSE BLOWER MOTOR (UNDER RIGHT SIDE OF DASH) BLOWER MOTOR CONTROL SWITCH BLOWER MOTOR RELAY BLOWER MOTOR RESISTOR ASSEMBLY (ON HVAC MODULE, NEAR BLOWER MOTOR) BRN WIRE BRN/WHT WIRE CLASS 2 SER DATA CLASS 2 SERIAL DATA DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FRT DEF GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES A/C COMP FUSE HOT IN HOT IN RUN OR START IGN E FUSE HTR A/C FUSE HVAC 1 FUSE HVAC CONTROL MODULE (BEHIND CENTER OF DASH) HVAC/ ECAS FUSE I/P RELAY BLOCK (LEFT SIDE OF DASH) INST LAMP DIM CTRL GROUND LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT TEMP CONTROL LOGIC LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MODE CONTROL MODE DOOR CTRL MODE DOOR CTRL IGN 3 LOW REF B(+) OFF OFF BLOW MT CTRL LO PRESS SENS SIG RT TEMP DOOR CTRL LT TEMP DOOR CTRL ORG/ WIRE POWERTRAIN CONTROL MODULE OR ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL RECIR DOOR CTRL RT TEMP DOOR CTRL LT TEMP DOOR CTRL RECIRC SWITCH RED WIRE RED/BLK WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT TEMP CONTROL RUN WIRE TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE WHT/BLK WIRE YEL WIRE

AIR TEMPERATURE ACTUATOR (AUXILIARY) AIR TEMPERATURE ACTUATOR (LEFT) AUTO A/C AUTOMATIC LEVEL CONTROL RELAY AUTOMATIC TRANSMISSION BODY CONTROL MODULE BRAKE FUSE BRN WIRE CRANK FUSE CRUISE CONTROL ON/OFF SWITCH ELECTRONIC BRAKE CONTROL MODULE ELECTRONIC SUSPENSION CONTROL MODULE ESCALADE EXT EXCEPT ESCALADE EXT FROM IGN A FUSE (DIAGRAM 1 OF 6) FRONT AXLE ACTUATOR FUSE HTR/AC FUSE CRUISE FUSE HVAC 1 FUSE HVAC CONTROL MODULE HVAC CONTROL PROCESSOR (AUXILIARY) HVAC CONTROL ASSEMBLY (REAR AUXILIARY) IGN 0 FUSE IGN 3 FUSE IGNITION SWITCH LEFT I/P FUSE BLOCK (BEHIND LOWER LEFT SIDE OF DASH) LOCK OFF MAN A/C MANUAL A/C AUTO A/C MODE ACTUATOR (AUXILIARY) AUTOMATIC LEVEL CONTROL RELAY MODE ACTUATOR RECIRCULATION ACTUATOR AIR TEMPERATURE ACTUATOR (RIGHT) ORG/ WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE PPL PNK WIRE REAR WHEEL STEERING CONTROL MODULE RED WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RUN WIRE STEERING WHEEL SPEED/ POSITION SENSOR STOPLAMP SWITCH TRACTION CONTROL SWITCH TBC IGN 0 FUSE THEFT DETERRENT CONTROL MODULE TRANSFER CASE SHIFT CONTROL SWITCH TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) W/ VSES W/O ULT W/ ULT WHT WIRE YEL WIRE

AUTOMATIC LEVEL RELAY AUXILIARY POWER CENTER FUSE/ RELAY BLOCK B/U LP FUSE BLK WIRE BODY CONTROL MODULE BRN WIRE CLIMATE CONTROL SEAT MODULE (DRIVER) CLIMATE CONTROL SEAT MODULE (FRONT PASSENGER) CLIMATE CONTROL SEAT MODULE (LEFT REAR) CLIMATE CONTROL SEAT MODULE (RIGHT REAR) CONVERTER) DEFOG RELAY DK BLU WIRE DRIVER, PASSENGER SWITCH ELECTRONIC SUSPENSION CONTROL MODULE EXC 8.L W/O CALIFORNIA LEV FROM IGN 3 FUSE (DIAGRAM 5 OF 6) FROM IGN B FUSE (DIAGRAM 1 OF 6) FUSE HEATED OXYGEN SENSOR BANK 1 SENSOR 1 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 HEATED/ COOLED CUP HOLDER RELAY I/P RELAY BLOCK (UNDER LEFT SIDE OF DASH, NEAR KICK PANEL) IGN E FUSE A/C COMP RELAY IGNITION SWITCH INFLATABLE RESTRAINT PASSENGER PRESENCE MODULE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSIDE REARVIEW MIRROR INSTRUMENT PANEL CLUSTER REAR OBJECT SENSOR CONTROL MODULE INSTRUMENT PANEL CLUSTER TURN SIGNAL/ MULTI- FUNCTION SWITCH LEFT I/P FUSE BLOCK (BEHIND LOWER LEFT SIDE OF DASH) LEFT REAR SWITCH LOCK LOCK OFF LOGIC LT BLU WIRE NCA WIRE OFF ORG/ WIRE PARK/NEUTRAL POSITION SWITCH PNK PNK PNK PNK PNK PNK WIRE PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE REAR WIPER/ WASHER SWITCH RED WIRE RELAY A RELAY B RIGHT REAR SWITCH RR WPR FUSE RUN WIRE SEO ACCY FUSE SEO IGN FUSE SIR FUSE TAN WIRE TBC ACCY FUSE TBC IGN 1 FUSE TO IGN 1 RELAY (DIAGRAM 3 OF 6) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE WINDSHIELD WIPER MOTOR MODULE WS WPR FUSE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 HALL A SIG HALL B SIG SENS GND POS 2 SIG 5 VOLT REF B+ VOLT B+ VOLT SERIAL DATA BASE BASE CASE GND GND B+ VOLT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BRN WIRE CASE GROUND COMPUTER DATA LINES SYSTEM CRUISE FUSE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUSE GRY WIRE HALL A SIG HALL B SIG SENS GND HALL C SIG HALL C SIG RLY VOLT SENS GND POS 1 SIG 5 VOLT REF HOT AT ALL TIMES HOT IN HOT IN RUN LEFT I/P FUSE BLOCK IGN 3 FUSE I/P RELAY BLOCK (LOWER LEFT SIDE OF DASH) INSTRUMENT CLUSTER SYSTEM LOW REF LT BLU WIRE LT GRN WIRE MEGA FUSE MODE IND CTRL LAT ACCEL SIG ORG/ WIRE PHASE A CTRL PHASE B CTRL PHASE C CTRL PNK PNK WIRE PNK WIRE POS A SIG POS B SIG POWER DISTRIBUTION SYSTEM PPL PULSE SIG REAR WHEEL POSITION SENSOR (LEFT REAR OF VEHICLE) REAR WHEEL STEERING CONTROL MODULE (NEAR SPARE TIRE BRACKET) REAR WHEEL STEERING MODE SELECT SWITCH RED WIRE RLY GND RUN WIRE SENS SIG STEERING GEAR MOTOR ASSEMBLY (NEAR SPARE TIRE BRACKET) STEERING WHEEL SPEED/ POSITION SENSOR (ON STEERING COLUMN) TAN WIRE UNDERHOOD FUSE BLOCK UNDERHOOD FUSE HOLDER VSS IGN 3 VOLT YAW SENS SIG MODE SW SIG WHT WIRE YEL WIRE

BATTERIES) BLK WIRE CRANK FUSE CRANK SIGN DK GRN WIRE GROUND DISTRIBUTION SYSTEM IGN A FUSE IGN B FUSE IGN E FUSE IGNITION SWITCH LEFT BATTERY LOCK OFF PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) PNK WIRE POWER DISTRIBUTION PPL RED WIRE RED/WHT WIRE RUN WIRE STARTER MOTOR STARTER RELAY STARTER SOLENOID STARTING/ CHARGING SYSTEM (FUSIBLE LINK) STARTING/ CHARGING SYSTEM (RIGHT BATTERY) (W/ DUAL SYSTEM UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT, NEAR BATTERY) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENG COMPT, NEAR BATTERY) UNDERHOOD JUNCTION BLOCK (AT LEFT SIDE OF ENG COMPT, NEAR BATTERY) UPFITTER OPTION YEL WIRE YEL/BLK WIRE

2-HI IND 4 HI 4 LO 4-HI IND 4-LO IND AXLE SW SIG BLK WIRE BLK/WHT WIRE BRAKE CONTROL BRN WIRE BRN/WHT WIRE CLASS II DATA AXLE CTRL AWD IND 4-LO IND 4-HI IND CONTROL MODULE CTRL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH, BELOW STEERING COLUMN) DK GRN WIRE DK GRN/WHT WIRE ENCODER ENCODER LOW GROUND ENCODER SIG EXCEPT SEO FRONT AXLE ACTUATOR FRONT PROPSHAFT SPEED SENSOR FUSE GROUND BATTERY MOTOR CTRL A MOTOR CTRL B GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN OR START I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN E FUSE ILLUMINATION INSTRUMENT PANEL CLUSTER LAMP LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) SEO IGN FUSE LOCK SOL CTRL 2-HI IND NEUTRAL IND LOGIC LT BLU WIRE LT GRN/BLK WIRE NCA WIRE NEUTRAL IND ORG/ WIRE PNK WIRE PPL PPL FT SHAFT LO FT SHAFT HI PPL/WHT WIRE REAR PROPSHAFT SPEED SENSOR RED WIRE RR SHAFT HI RR SHAFT LO RUN WIRE SEO SHIFT MOTOR SPLICE PACK TAN WIRE TAN/BLK WIRE TRANSFER CASE ENCODER MOTOR TRANSFER CASE SHIFT CONTROL SWITCH TREC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) YEL WIRE

4 LO 4-LO IND 4-LO IND 4-HI IND PNK WIRE BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CHANNEL A CHANNEL B CHANNEL C CHANNEL P CLASS II DATA DATA LINK CONNECTOR (BELOW LEFT SIDE OF DASH) DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENCODER LOW EXCEPT SEO FUSE GROUND BATTERY MOTOR CTRL B MOTOR CTRL A GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN OR START IGN E FUSE ILLUMINATION INSTRUMENT PANEL CLUSTER LAMP LEFT I/P FUSE BLOCK (BEHIND LOWER LEFT SIDE OF DASH) LEFT I/P FUSE BLOCK (BEHIND LOWER LEFT SIDE OF DASH) SEO IGN FUSE LOGIC LT BLU WIRE NCA WIRE NEUTRAL IND ORG/ WIRE PNK WIRE PPL PPL/WHT WIRE RED WIRE RED/WHT WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RUN WIRE SEO SHIFT MOTOR SPLICE PACK TCS TRANSFER CASE ENCODER MOTOR TRANSFER CASE SHIFT CONTROL SWITCH TREC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) YEL/BLK WIRE