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Wiring Chart for R/S on a 2004 Trailblaze

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=47682
Printed Date: August 27, 2025 at 9:10 AM


Topic: Wiring Chart for R/S on a 2004 Trailblaze

Posted By: brcidd
Subject: Wiring Chart for R/S on a 2004 Trailblaze
Date Posted: January 14, 2005 at 7:00 AM

Can you kind folks please supply one? - got one to do this weekend-- Thanks- this is the best forum Ive seen........

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Brcidd - Engineer That Does Remote Starter Installs on the side.



Replies:

Posted By: Falcon 1
Date Posted: January 14, 2005 at 9:10 AM
TRAILBLAZER     2004
WIRE COLORSLOCATION
12 VOLTS CONSTANTRED and RED / WHITEIGNITION SWITCH HARNESS
IGNITION 1PINK (+)IGNITION SWITCH HARNESS
IGNITION 2WHITE (+)IGNITION SWITCH HARNESS
ACCESSORY /HEATER BLOWER ORANGE (+)IGNITION SWITCH HARNESS
STARTERYELLOW (+)IGNITION SWITCH HARNESS
PARKING LIGHTS (+)BROWN at FUSE BOX under LEFT REAR SEAT
DOMELIGHTGRAY/BLACK (+)at FUSE BOX under LEFT REAR SEAT
POWER DOOR LOCKSEE NOTES
POWER DOOR UNLOCKSEE NOTES*SEE DIAGRAM*
TRUNK RELEASESEE NOTES
TACH SENSORWHITESee NOTE ***
BRAKEWHITE (+)at the BRAKE SWITCH
HORNBLACK / YELLOW (-)             or BLACK (-)at the STEERING COLUMN HARNESS or the BCM, TAN Plug, Pin E12
FACTORY DISARMLT. GREEN (-)AT DRIVER'S DOOR MODULE IN THE DRIVER'S DOOR
FACTORY ANTI-THEFTPASSLOCK IIRequires part # 791 bypass module

NOTES: Must go inside of the front Driver's door, the front Passenger door and the Rear Hatch to wire (3) separate Type C systems to the lock motors in each door. The wires are GRAY for lock and TAN for unlock. This will lock and unlock the two front doors and the rear hatch only. The middle doors, must be wired as a Type B system using the LT. BLUE for lock and the WHITE for unlock. The wires are located under the rear seat on the driver's side. 

NOTE ***       On the 4.2L engine the PCM (Power Control Module) is located on the DRIVERS SIDE of the engine, the TACH wire is in a BLUE plug Pin 49.   On the 5.3L engine, the PCM is located on the DRIVERS SIDE of the engine but down low on the front, the TACH wire is in a GREEN plug, Pin 10.

NOTE ****    The BCM (Body Control Module) is located under the LEFT REAR SEAT, attached to the FUSE BOX.

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Do it right the first time, only a doctor can bury his mistakes.




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