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CHEVROLET SILVERADO
MODEL YEAR(S
SILVERADO 1998
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 (+) or PURPLE (+) @ 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 ( - ) N/A
PARKING LIGHTS ( + ) BROWN (+) @ HEADLIGHT SWITCH or @ FUSE BOX
POWER LOCK LT BLUE, See NOTE #3 IN EITHER DOOR BOOT
POWER UNLOCK WHITE, See NOTE #3 IN EITHER DOOR BOOT
LOCK MOTOR WIRE GRAY (5-WIRE TYPE) IN DRIVERS KICK PANEL
DOOR TRIGGER PURPLE (-) @ LIGHT SWITCH
DOMELIGHT SUPERVISION USE DOOR TRIGGER, (Requires #775 Relay)
TRUNK RELEASE N/A
SLIDING POWER DOOR N/A
HORN BLACK (-) @ STEERING COLUMN HARNESS
TACH WHITE (AC), See NOTE #4 @ ECM, SEE NOTE #4
WAIT TO START LIGHT DK BLUE (-) @ INSTRUMENT CLUSTER
BRAKE WHITE (+) @ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM N/A
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; If the vehicle is a 2-Door the Door locks are a TYPE C, if the vehicle is a 4-Door it is a

TYPE A Door locking system.





NOTE #4: The ECM is located on the drivers side inner fender well, modulde has 2 plugs, WHITE

wire in plug marked WHITE. On the 6.5 DIESEL, the WHITE wire is at the INSTRUMENT

CLUSTER.
LINK 1 LINK TEXT 1 LINK 2 LINK TEXT 2