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04 Chevrolet Trailblazer Alarm Upgrade

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=39460
Printed Date: May 09, 2025 at 3:12 AM


Topic: 04 Chevrolet Trailblazer Alarm Upgrade

Posted By: desh187
Subject: 04 Chevrolet Trailblazer Alarm Upgrade
Date Posted: September 20, 2004 at 11:50 PM

Have to install omega keyless upgrade alarm(al 100)on a 2004 chevy trailblazer.I have done alarms on these models which didnt come with factory remotes but since i have to do an upgrade as this particlar one has factory remotes,iam wondering-is there any other way apart from removing both front door panels to get to the motor lock/unlock wires?
It is so easy to use GM link connector but that is only for non keyless .



Replies:

Posted By: xtremeaudio
Date Posted: September 21, 2004 at 1:47 AM

all you need dei 456g will take the door lock for you they are about $ 35 456g still work with out keyless




Posted By: kgerry
Date Posted: September 21, 2004 at 11:29 AM
455G actually on the ST6 chassis...456 is for the fullsize trucks

-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979



Posted By: snguyen
Date Posted: September 21, 2004 at 9:31 PM
Wire/FunctionColourLocation/DescriptionPolarityPic/Graphic
PASSIVE ANTI-THEFT
YES PASSLOCK 2 SEE NOTES
12 VOLTS
Red & RED / white At steering column +
IGNITION
Pink At steering column +
IGNITION 2
White At steering column +
ACCESSORY
Orange At steering column +
STARTER
Yellow At steering column +
TACH
White
In blue connector at ECM*
AC
FUEL INJECTOR
Opposite from Pink At any injector on engine AC
LOCK
SEE NOTES**
UNLOCK
SEE NOTES**
DRIVER LOCK MOTOR
Gray
Pin-B3 on 24-pin plug at DDM***
+
DRIVER UNLOCK MOTOR
Tan
Pin-B2 on 24-pin plug at DDM***
+
PASSENGER UNLOCK MOTOR
Tan
Pin-B2 on 24-pin plug at PDM****
+
DOORPIN
SEE NOTES*****
R.A.P. SHUT DOWN
SEE NOTES**
HOODPIN
Pink/black
At hoodpin on left inner fender******
-
FACTORY ARM
SEE NOTES**
FACTORY DISARM
SEE NOTES**
BRAKESWITCH
White At switch or trailer module +
PARKLIGHTS
Brown In large harness directly below steering column +
HORN
BLACK / YELLOW
At steering column********
-
DRIVER WINDOW UP
Dk.blue At switch in driver's door REV POL
DRIVER WINDOW DOWN
Brown At switch in driver's door REV POL
PASSENGER WINDOW UP
Lt.blue At switch in passenger door REV POL
PASSENGER WINDOW DOWN
Tan At switch in passenger door REV POL
LEFT REAR WINDOW UP
Dk.blue At switch in left rear door REV POL
LEFT REAR WINDOW DOWN
Brown At switch in left rear door REV POL
RIGHT REAR WINDOW UP
Dk.blue At switch in right rear door REV POL
RIGHT REAR WINDOW DOWN
Brown At switch in right rear door REV POL
HEADLIGHTS
White At light switch harness -
DATABUS INTERFACE
Violet At pin 2 of diagnostic connector
KEY SENSE
Lt.green At steering column -

? Vehicle notes
PLEASE NOTE: This vehicle is equipped with the PASLOCK 2 passive anti-theft system. Please refer to the appropriate security diagram before any remote start installation.
* The 4200 Vortec has the ECM mounted to the top left side of the engine. The WHITE tach wire is located in the BLUE connector. See the exploded view.
** The doorlocks are Class 2 Data on this vehicle and cannot be interfaced directly. Interface modules for both doorlocks and security are available for this vehicle. Contact your supplier for more information.
*** The DDM (driver's door module) is located in the driver's door and is part of the switch assembly.
**** The PDM (passenger door module) is located in the passenger door and is part of the switch assembly.
***** You can use the GRAY/BLACK at the courtesy light under the dash to catch all doors. If you need the individual doorpins, they must be accessed in their respective doors. The wire colors are as follows: GRAY/BLACK-driver's door, BLACK/ WHITE-passenger door, LT.BLUE/BLACK-left rear door, LT.GREEN/ BLACK-right rear door. All wires are negative (-) polarity.
****** The hood-pin is optional. If present, this wire can also be found at the BCM under the rear left seat at pin-E6 on the 24-pin GRAY connector.
******** You can also use the BLACK at pin-E12 on the 32-pin connector at the BCM under the rear left seat.



Posted By: BNLUIS
Date Posted: September 21, 2004 at 9:47 PM

I own a Trailblazer and also have to do and alarm upgrade on an 04 friday

The answer is no you will have to go inside door to catch door lock motor wires

 LOCK MOTOR|gray                |   |driver door module in door  |
|     UNLOCK MOTOR|tan                 |   |driver door module in door  |
|    DISARM DEFEAT|tan                 |   |relay box under rear seat



-------------
Luis
Sound Waves
Is up to the installer to test all wires with a DMM whenever possible.



Posted By: kgerry
Date Posted: September 22, 2004 at 12:21 PM
OR you could use the 455G module and do keyless in 3 minutes... this module covers keyless entry, OEM alarm interfacing and domelight supervision.... all in under 5 mintues....   who in their right mind wouldnt use this module???    or any similar module made by other companies....

-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979


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