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CHEVROLET AVALANCHE
MODEL YEAR(S
AVALANCHE 2003-2006
KEY T-HARNESS IMMOBILIZER
N/A N/A GM'S PASSLOCK 2 ANTI-THEFT SYSTEM, SEE NOTE #1
PART COLOR LOCATION DIAGRAM
12 VOLT CONSTANT RED (+) @ IGNITION SWITCH HARNESS
STARTER YELLOW (+) @ IGNITION SWITCH HARNESS
STARTER 2 N/A
IGNITION 1 PINK (+) @ IGNITION SWITCH HARNESS
IGNITION 2 WHITE (+) @ IGNITION SWITCH HARNESS
IGNITION 3 N/A
ACCESSORY/HEATER BLOWER 1 ORANGE (+) @ IGNITION SWITCH HARNESS
ACCESSORY/HEATER BLOWER 2 BROWN (+) @ IGNITION SWITCH HARNESS
KEYSENSE N/A
PARKING LIGHTS ( - ) GRAY/BLACK (-) @ HEADLIGHT SWITCH or BCM, BROWN PLUG, PIN B2
PARKING LIGHTS ( + ) BROWN (L) and BROWN/WHITE (R) (+) @ UNDERHOOD FUSE BOX, RED 32-PIN PLUG, PINS F6 AND C6
POWER LOCK SEE NOTE #1
POWER UNLOCK SEE NOTE #1
LOCK MOTOR WIRE GRAY @ DRIVERS DOOR MODULE IN DOOR
DOOR TRIGGER See NOTE #3 @ BMC, See NOTE #2
DOMELIGHT SUPERVISION See NOTE #3 @ BCM, See NOTE #2
TRUNK RELEASE N/A
SLIDING POWER DOOR N/A
HORN BLACK (-) @ BCM, BROWN plug, Pin A9, See NOTE #2
TACH WHITE (AC) @ ECM, See NOTE #4
WAIT TO START LIGHT N/A
BRAKE WHITE (+) @ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM LIGHT GREEN (-) @ DRIVERS WINDOW SWITCH, BLACK 26-PIN PLUG, PIN 15
ANTI-THEFT PASSLOCK 2 ANTI-THEFT, YELLOW (+)1-5 VOLTS and ORG/BLK or BLACK (-), RED/WHITE 12 VOLTS (NOT USED) @ IGNITION TUMBLER
NOTES
NOTE #1: This vehicle is equipped with GM'S PASSLOCK 2 ANTI-THEFT SYSTEM that will Require

the 791 Bypass Module for REMOTE STARTING. If you are INSTALLING a REMOTE

START/KEYLESS ENTRY the Part # DB-ALL or XK09 INTERFACE BYPASS MODULE is

required, either unit will work for this application.



to order go to the INTERFACE BYPASS MODULE Page on this website.







NOTE #2: The BCM (Body Control Module) is located BEHIND the DRIVERS SIDE of DASH, with

the PLUGS facing the REAR of the vehicle.







NOTE #3: This vehicle has (2) door trigger wires, a TAN (-) for the DRIVERS door in the PURPLE

plug, Pin B4 and for the PASSENGERS doors a BLUE/WHITE (-) in the LIGHT BLUE

plug, Pin B11. When installing and ALARM SYSTEM use both wires and DIODE

ISOLATE. For DOMELIGHT SUPERVISION use only the TAN (-) PURPLE plug, Pin B4.







NOTE #4 The ECM (Electronic Control Module) is located near the BATTERY down low, between

the fender and the fan under a BLACK cover. TACH wire: On the 4.3L the TACH wire

is in a 20 Pin connector labled "RED". On the 4.8L, 5.3L, and 6.0L the TACH wire is

at Pin 10 in the RED connector.
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