Chevrolet Tahoe II (1999-2006) computer data lines system Wiring diagrams

22 3 11 SERIAL DATA LEFT SEAT BELT SW LOW REFERENCE 22 3 18 SERIAL DATA LOW REFERENCE LEFT DOOR AJAR SW 22 5 20 SERIAL DATA DOOR AJAR SWITCH LOW REFERENCE 59 58 SERIAL DATA SERIAL DATA BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DATA LINK CONNECTOR (DLC) (PARTIAL) (UNDER LEFT SIDE OF DASH) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER MINI-WEDGE DOOR JAMB SWITCH DRIVER SEAT BELT SWITCH FRONT PASSENGER DOOR MODULE (FPDM) (IN RIGHT FRONT DOOR) GRY WIRE GRY/BLK WIRE IGN INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER LEFT FRONT SEAT) INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT LIFTGATE AJAR SWITCH LEFT TURN LIFTGLASS AJAR SWITCH LOGIC LT BLU WIRE LT GRN WIRE ORG/ WIRE PASSENGER MINI WEDGE (DOOR JAMB SWITCH) PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (AT LEFT FRONT OF ENGINE COMPARTMENT) PPL PPL PPL 1132 1807 RADIO RIGHT CARGO DOOR AJAR SWITCH RIGHT DOOR CONTACT PLATE (BODY) RIGHT DOOR CONTACT PLATE (DOOR) RIGHT I/P FUSE BLOCK (ON LOWER RIGHT SIDE OF DASH) RIGHT LIFTGATE AJAR SWITCH RIGHT TURN SEAT BELT SERIAL DATA SPLICE PACK SUPPLEMENTAL RESTRAINTS SYSTEM TAN WIRE W/ANTI-THEFT SYSTEM 1036 1044 1045 W/CARGO DOORS W/O CARGO DOORS WHT WIRE WIPER/ WASHER SYSTEM YEL WIRE

AUDIO AMPLIFIER BARE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CD PLAYER REMOTE PLAYBACK DEVICE COMPUTER DATA LINES SYSTEM DIMMING DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND R SPK OUT+ L SPK OUT+ L SPK OUT- L SPK OUT+ L SPK OUT- R SPK OUT- B+ GRY WIRE HOT AT ALL TIMES INFO FUSE LEFT "D" PILLAR (EXCEPT ESCALADE EXT) LEFT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT REAR DOOR SPEAKER LEFT SUBWOOFER LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NOISE COMPENSATION MICROPHONE ORG/ WIRE ORG/BLK WIRE PPL RADIO FUSE RED WIRE RIGHT "D" PILLAR (EXCEPT ESCALADE EXT) RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT I/P FUSE BLOCK (ON LOWER RIGHT SIDE OF DASH) RIGHT SUBWOOFER RT AUD + LF AUD + AUD OUT - GROUND SERIAL DATA B+ SERIAL DATA SUBWOOFER SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) WHT WIRE YEL WIRE

12 11 10 9 8 7 6 5 4 3 2 1 COM AUD SIG 3 4 5 6 7 8 9 10 11 12 13 14 15 16 RT AUD + BARE BARE BARE BLK/WHT WIRE BRN/WHT WIRE CD PLAYER REMOTE PLAYBACK DEVICE (IF EQUIPPED) COAX ANTENNA COMPUTER DATA LINES SYSTEM DATA LINES DIGITAL RADIO ANTENNA DIGITAL RADIO RECEIVER (IF EQUIPPED) DIMMING DK GRN/WHT WIRE GROUND AUD OUT - DRAIN WIRE GROUND LT AUD SIG RT AUD SIG HOT AT ALL TIMES I/P RELAY BLOCK (BELOW LOWER LEFT SIDE OF DASH) INFO FUSE LF AUD + LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE REAR SEAT ENTERTAINMENT ASSEMBLY (IF EQUIPPED) RT AUD + LF AUD + AUD OUT - GROUND SERIAL DATA B+ SERIAL DATA SPLICE PACK TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT)

AM ANTENNA ANT ENABLE SIG ANTENNA ANTENNA ANTENNA ANTENNA EXCEPT EXCALADE EXT COAX BARE BARE DRAIN WIRE BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BRN WIRE BRN/WHT WIRE CELL VOICE SIG VOICE LOW REF COAX COAX ESCALADE EXT COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM PNK WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE ENABLE SIG ENGINE CONTROLS SYSTEM FM ANTENNA FM COMP SIG FM IMPEDANCE MATCHING MODULE (IN RIGHT REAR QUARTER GLASS) GROUND HOT AT ALL TIMES I/P FUSE BLOCK (BELOW LOWER LEFT SIDE OF DASH) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LF SPK OUT+ LF SPK OUT- RR SPK OUT+ RR SPK OUT- GROUND LR AUD SIG+ LR SPK OUT + LR SPK OUT - RF SPK OUT + RF SPK OUT - LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE OUT TO RADIO PNK/BLK WIRE PROG RADIO RADIO ANTENNA MODULE (ABOVE RIGHT REAR QUARTER GLASS, IN HEADLINER) RADIO FUSE REAR SEAT AUDIO CONTROLLER (ON REAR OF CENTER CONSOLE) RED WIRE REMOTE RADIO CONTROL SIGNAL REMOTE RADIO CONTROL SUPPLY VOLTAGE RIGHT AUD SIG LEFT AUD SIG COMMON AUD SIG RR AUD SIG+ SEEK DN SEEK UP SERIAL DATA SOURCE DN SOURCE UP STEERING WHEEL AUDIO CONTROLS TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) VEH SPEED SEN VEHICLE COMMUNICATION INTERFACE MODULE (RIGHT SIDE OF DASH) VOICE VOICE LO REF VOICE SIGNAL VOL DN VOL UP

10 11 12 13 14 15 16 AUD OUT - DRAIN WIRE AUDIO AMPLIFIER BARE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COAX ANTENNA COMPUTER DATA LINES SYSTEM DIGITAL RADIO ANTENNA DIGITAL RADIO RECEIVER DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND GROUND R SPK OUT+ L SPK OUT+ L SPK OUT- L SPK OUT+ L SPK OUT- R SPK OUT- B+ GRY WIRE HOT AT ALL TIMES LEFT "D" PILLAR (EXCEPT ESCALADE EXT) LEFT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT REAR DOOR SPEAKER LEFT SUBWOOFER LF AUD + RT AUD + LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NOISE COMPENSATION MICROPHONE ORG/ WIRE ORG/BLK WIRE PPL RADIO FUSE RED WIRE RIGHT "D" PILLAR (EXCEPT ESCALADE EXT) RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT I/P FUSE BLOCK (ON LOWER RIGHT SIDE OF DASH) RIGHT SUBWOOFER SERIAL DATA SUBWOOFER SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) WHT WIRE YEL WIRE

AM ANTENNA ANT ENABLE SIG ANTENNA ANTENNA ANTENNA ANTENNA EXCEPT EXCALADE EXT COAX BARE BARE DRAIN WIRE BCM CLASS 2 SERIAL DATA BLK/WHT WIRE BODY CONTROL MODULE BRN WIRE BRN/WHT WIRE CELL VOICE SIG VOICE LOW REF COAX COAX ESCALADE EXT COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM PNK WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE ENABLE SIG ENGINE CONTROLS SYSTEM FM ANTENNA FM COMP SIG FM IMPEDANCE MATCHING MODULE (IN RIGHT REAR QUARTER GLASS) GROUND HOT AT ALL TIMES I/P FUSE BLOCK (BELOW LOWER LEFT SIDE OF DASH) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LF SPK OUT+ LF SPK OUT- RR SPK OUT+ RR SPK OUT- GROUND LR AUD SIG+ LR SPK OUT + LR SPK OUT - RF SPK OUT + RF SPK OUT - LT BLK WIRE LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE OUT TO RADIO PNK/BLK WIRE PROG RADIO RADIO ANTENNA MODULE (ABOVE RIGHT REAR QUARTER GLASS, IN HEADLINER) RADIO FUSE REAR SEAT AUDIO CONTROLLER (ON REAR OF CENTER CONSOLE) RED WIRE REMOTE RADIO CONTROL SIGNAL REMOTE RADIO CONTROL SUPPLY VOLTAGE RIGHT AUD SIG LEFT AUD SIG COMMON AUD SIG RR AUD SIG+ SEEK DN SEEK UP SERIAL DATA SOURCE DN SOURCE UP STEERING WHEEL AUDIO CONTROLS TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) VEH SPEED SEN VEHICLE COMMUNICATION INTERFACE MODULE (RIGHT SIDE OF DASH) VOICE VOICE LO REF VOICE SIGNAL VOL DN VOL UP

12 11 10 9 8 7 6 5 4 3 2 1 COM AUD SIG AUDIO AMPLIFIER BARE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DATA LINES DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND LT AUD SIG RT AUD SIG GROUND R SPK OUT+ L SPK OUT+ L SPK OUT- L SPK OUT+ L SPK OUT- R SPK OUT- B+ GRY WIRE HOT AT ALL TIMES INFO FUSE LEFT "D" PILLAR (EXCEPT ESCALADE EXT) LEFT FRONT DOOR SPEAKER RIGHT REAR DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LEFT REAR DOOR SPEAKER LEFT SUBWOOFER RIGHT SUBWOOFER LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NOISE COMPENSATION MICROPHONE ORG/ WIRE ORG/BLK WIRE PPL RADIO FUSE REAR SEAT ENTERTAINMENT ASSEMBLY RED WIRE RIGHT "D" PILLAR (EXCEPT ESCALADE EXT) RIGHT FRONT TWEETER SPEAKER RIGHT FRONT DOOR SPEAKER RIGHT I/P FUSE BLOCK (ON LOWER RIGHT SIDE OF DASH) SERIAL DATA SUBWOOFER SPEAKER TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) WHT WIRE YEL WIRE

CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM GRY WIRE IGN INSTRUMENT PANEL CLUSTER (IPC) LEFT FRONT TIRE PRESSURE MONITOR SENSOR SOLID STATE LEFT REAR TIRE PRESSURE MONITOR SENSOR SOLID STATE MESSAGE DISPLAY PASSENGER DOOR MODULE (PDM) CLASS 2 SERIAL DATA RECEIVE INPUT RIGHT FRONT TIRE PRESSURE MONITOR SENSOR SOLID STATE RIGHT REAR TIRE PRESSURE MONITOR SENSOR SOLID STATE TAN WIRE TIRE PRESSURE IND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 B(+) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 BACKLIGHT BACKLIGHT GROUND 984 983 9004 9003 982 PNK BARE BARE WIRE AUD COMMON B+ AUDIO COMMON OUTER SHIELD BARE BARE (BLUNT CUT) BARE PNK WIRE BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH, NEAR KICK PANEL) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DVD PLAYER FRONT DISPLAY GRY WIRE HOT AT ALL TIMES INFO FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE PNK 969 970 971 972 973 WIRE PPL PPL 960 961 962 963 964 965 966 967 968 9000 PPL BARE PREMIUM SOUND RADIO CIRCUIT W/ REAR ENTERTAINMENT R AUD SIG + L AUD SIG + GROUND REAR DISPLAY RED WIRE SERIAL DATA SPLITTER BOX (CENTER OF REAR HEADLINER) TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VIDEO - +5 VOLT DISPLAY BUS OUT DISPLAY BUS IN BLACK LIGHT + WHT WIRE YEL WIRE