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2004 trailblazer ext

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=40904
Printed Date: May 15, 2025 at 11:24 AM


Topic: 2004 trailblazer ext

Posted By: sahall32
Subject: 2004 trailblazer ext
Date Posted: October 14, 2004 at 7:29 PM

I'm installing a alarm/rs in a 04 trailblazer and the wires listed on the several wire list that I have are totally different. parking lights on the list are showing +brown in the drivers kick panel but I found them to be on a -grey/black and the dome light shows +grey/black but I found that it is -blue/white , both parking and dome light wires coming from switch. does anyone show what I found to be correct? Do I need to keep looking some more?

also I want to use a gmdaa module in this truck will that work ok?

Thanks,

Steve




Replies:

Posted By: snguyen
Date Posted: October 14, 2004 at 7:57 PM

Chevrolet

Trailblazer

2002-2004

Remote Starter  Wiring Colors and Notes

Function

 

Vehicle  Color

Location

Start:

 

YELLOW

IGNITION SWITCH HARNESS *

Ignition  #1:

 

PINK

IGNITION SWITCH HARNESS

Ignition #2:

 

WHITE

IGNITION SWITCH HARNESS

Ignition  #3:

 

BROWN

****

Accessory:

 

ORANGE

IGNITION SWITCH HARNESS

Brake  Light:

 

WHITE

AT SWITCH ABOVE BRAKE PEDAL

Tach  Signal:

 

WHITE

IN BLUE PLUG AT THE ECM ON DRIVER'S SIDE OF MOTOR

Parking Lights:

 

BROWN (+)

DRIVER'S KICK PANEL

Headlights:

 

OEM Alarm  Disarm:

 

LT. GREEN (-)

INSIDE OF DRIVER'S DOOR AT MODULE

OEM Alarm  Arm:

 

Diesel  Glow Plug:

 

N/A

Clutch  Bypass Wire:

 

N/A

Notes:

 * This Vehicle Is Equipped With GM's PASSLOCK II Anti-Theft System; Use Universal Alarm Bypass Module or Vehicle Specific Bypass DTI #23545 ****All DesignTech remote starters except the 2xx22 have an ignition 3 output - it is the WHITE/ black in the 'control harness.' This wire will be used to control the bypass module, if needed. This wire will require a relay for the Brown (ACC)wire.

Chevrolet

Trailblazer

2002-2004

Alarm and Keyless  Entry Wiring Colors and Notes

Function

 

Vehicle  Color

Location

Constant  +12 Volts:

 

RED

IGNITION SWITCH HARNESS

Starter  Kill:

 

YELLOW

IGNITION SWITCH HARNESS *

Ignition  +12 Volts:

 

PINK

IGNITION SWITCH HARNESS

Dome  Lights/Superv:

 

GRAY/BLACK (+)

UNDERNEATH DASH AT COURTESY LAMP

OEM Horn:

 

BLACK / YELLOW (-)

STEERING COLUMN HARNESS

Power  Lock:

 

SEE NOTE BELOW ***

CAUTION - DATABUS SYSTEM

Power  Unlock:

 

SEE NOTE BELOW ***

INTERFACE MODULE RECOMMENDED!

Trunk  Release:

 

N/A

Alarm  Input Wire:

 

GRAY/BLACK (+)

UNDERNEATH DASH AT COURTESY LAMP

Notes:

*This vehicle uses an extremely complex lock/unlock circuit. To Lock/Unlock, we recommend use of the 23561 Door Lock Interface module, available through DesignTechs sales department at 800-337-4468 . Alternatively, you can wire inside each door for reverse polarity door locks. The 23561 module is easier to install, less expensive, and requires less wiring than the reverse polarity/relay method. Motor Wires, should you choose the reverse polarity method, are Gray for Lock and Tan for unlock. SOME of these vehicles have a switch on the right rear panel which can lock/unlock all doors as a positive trigger system. If so equipped, the wires are Lt Blue for lock and White for Unlock. Connection of the locks without the module is not supported.



Posted By: NowYaKnow
Date Posted: October 14, 2004 at 10:03 PM
On the trailblazers you can use gray/black (-) @ the switch OR brown (+) for the park lights. Also the domelight wire is gray/black (+) @ the domelight. Just because the diagrams may list one wire doesn't mean there aren't alternatives.

Mike




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