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CHEVROLET SILVERADO
MODEL YEAR(S
SILVERADO 1999-2002
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 (+), SEE NOTE #2 @ IGNITION SWITCH HARNESS
IGNITION 3 N/A
ACCESSORY/HEATER BLOWER 1 ORANGE (+) @ IGNITION SWITCH HARNESS
ACCESSORY/HEATER BLOWER 2 N/A
KEYSENSE N/A
PARKING LIGHTS ( - ) WHITE (-) @ BCM LT BLUE PLUG, PIN A5, SEE NOTE #3
PARKING LIGHTS ( + ) BROWN (+) @ HEADLIGHT SWITCH or BCM, LT BLUE PLUG, SEE NOTE #3
POWER LOCK LT. BLUE (+) TYPE A @ BCM BROWN PLUG, SEE NOTE #3
POWER UNLOCK WHITE (+) TYPE A @ BCM BROWN PLUG, SEE NOTE #3
LOCK MOTOR WIRE GRAY (5-WIRE TYPE) IN DRIVERS KICK PANEL
DOOR TRIGGER SEE NOTE #5 @ BCM, SEE NOTE #3
DOMELIGHT SUPERVISION TAN (-) @ BCM, PURPLE PLUG, PIN B4, SEE NOTE #3
TRUNK RELEASE N/A
SLIDING POWER DOOR N/A
HORN BLACK (-) @ BCM, BROWN PLUG, SEE NOTE #3
TACH WHITE (AC) @ ECM, SEE NOTE #4
WAIT TO START LIGHT DK. BLUE (-) @ INSTRUMENT CLUSTER
BRAKE WHITE (+) @ BRAKE PEDAL SWITCH
FACTORY ALARM DISARM LT. GREEN (-) IN DRIVERS KICK PANEL
ANTI-THEFT GM'S PASSLOCK 2 ANTI-THEFT SYSTEM, SEE NOTE #1 @ IGNITION SWITCH
NOTES
NOTE #1: This vehicle uses GM'S PASSLOCK 2 ANTI-THEFT SYSTEM that requires a 791 Bypass

Module to Remote Start,



to order go to the SECURITY BYPASS MODULES Page on this website.







NOTE #2: The IGNITION #2 wire WHITE must be connected to prevent a CHECK ENGINE LIGHT

from turning on and to prevent DAMAGE to the TRANSMISSION on this Vehicle.







NOTE #3; The BCM is located behind the Drivers Side of the dash, the plugs on the BCM face

towards the rear of the vehicle.







NOTE #4: The ECM is located NEAR the Battery, low, between the fender and the fan, under a

BLACK PLASTIC Cover, on the 4.3L engine the tach wire is @ Pin 20, in the connector

labled RED. On the 4.8L, 5.3L and 6.0L engines, the tach wire is @ Pin 10 of the RED

Connector.





NOTE #5: use TAN (-) for the Drivers door located in PURPLE PLUG, PIN B4, for the PASSENGER door use a ORANGE (-) in the PURPLE PLUG, PIN B2 or a DK BLUE/WHITE (-) in a LT BLUE PLUG, PIN B11, when connecting an alarm you must use both wires and diode isolate.
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