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GMC YUKON
MODEL YEAR(S
YUKON 1998-1999
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 #5 @ 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
POWER LOCK LIGHT BLUE (TYPE C), See NOTE #2 IN EITHER DOOR HARNESS
POWER UNLOCK WHITE (TYPE C), See NOTE #2 IN EITHER DOOR HARNESS
LOCK MOTOR WIRE GRAY (5-WIRE TYPE) IN DRIVERS DOOR HARNESS
DOOR TRIGGER PURPLE (-) @ HEADLIGHT SWITCH
DOMELIGHT SUPERVISION WHITE (-), (Requires Part #775 Relay) @ UNDER DASH LIGHT
TRUNK RELEASE BLACK or BLACK/WHITE, See NOTE #4, (Requires Part #775 Relay) LOW in DRIVERS KICK PANEL
SLIDING POWER DOOR N/A
HORN BLACK (-) @ STEERING COLUMN HARNESS
TACH WHITE (AC) @ ECM See NOTE #3
WAIT TO START LIGHT DARK BLUE (-) See NOTE #6 @ INSTRUMENT CLUSTER
BRAKE WHITE (+) @ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM N/A
ANTI-THEFT YELLOW (+), ORANGE/BLACK (-) and RED/WHITE (Not used) GM's PASSLOCK 2 System, these wires exit the Ignition Switch Tumbler together and are in the Main Ignition Switch Harness in the Column.
NOTES
NOTE #1: This vehicle is equipped with the PASSLOCK 2 ANTI-THEFT SYSTEM and will require a

791 Bypass Module for Remote Starting,



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





NOTE #2: If vehicle is a 2-Door, door locks are a (TYPE "C") If vehicle is a 4-Door,

door locks are a (TYPE "A")





NOTE #3: The ECM (Engine Control Module) is located on the DRIVERS SIDE INNER FENDER,

the TACH wire is in a BLACK plug, labled "WHITE"





NOTE #4: if vehicle has a LIFT GATE, it is a (+) Positive hatch release, if vehicle has a CARGO

DOOR, it is a 5-Wire System, will also require an extra Relay part #775, to connect,







NOTE #5: IMPORTANT !!!!! this wire MUST BE CONNECTED as IGNITION #2 for

REMOTE STARTING!!!!!!





NOTE #6: when hooking up a remote starter, if you cannot get the (+) or (-) Wait to Start

wire on the Remote Starter to work properly, you will then need to disconnect this

wire and Program the Remote Starter for the 5, 10, 15 or 20 Second Wait to Start

Timmer in the Installation manual.
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