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2002 Trailblazer Alarm

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=15942
Printed Date: July 22, 2025 at 6:48 PM


Topic: 2002 Trailblazer Alarm

Posted By: NCSUTrlBlzr02
Subject: 2002 Trailblazer Alarm
Date Posted: July 06, 2003 at 2:53 PM

I am wanting to get an Alarm System with Remote Start for my 2002 Trailblazer LS.  I have the Keyless Entry system on this car as of today and whatever comes along with it. 

Which is a good alarm to get and what other features should I get that would be of use. 

I want to install this alarm my self if possible.  I am hoping this Forum will help me in doing so. 

Is there a wiring diargram for my car on here?




Replies:

Posted By: Velocity Motors
Date Posted: July 06, 2003 at 7:21 PM

I suggest a 2 way system and also if you are installing this yourself, I HIGHLY suggest the PLDATA and GMDL1 . Here is the wiring datsheet for this vehicle:

|       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |
|              12V|red  (x2)           |+  |ignition harness            |
|          STARTER|yellow              |+  |ignition harness            |
|         IGNITION|pink                |+  |ignition harness            |
|  SECOND IGNITION|white               |+  |ignition harness            |
|        ACCESSORY|orange              |+  |ignition harness            |
| SECOND ACCESSORY|brown               |+  |ignition harness            |
|       POWER LOCK|use Directed module |   |                            |
|     POWER UNLOCK|part #455G *3       |   |                            |
|       LOCK MOTOR|gray                |   |driver door module in door  |
|     UNLOCK MOTOR|tan                 |   |driver door module in door  |
|    DISARM DEFEAT|tan                 |   |relay box under rear seat   |
| PARKING LIGHTS +|brown               |   |driver kick panel           |
| PARKING LIGHTS -|gray/black          |   |headlight switch            |
|       HEADLIGHTS|white               |-  |headlight switch            |
|     DOOR TRIGGER|gray/black          |+  |underdash light             |
| DOME SUPERVISION|comes on with disarm|   |                            |
|  TRUNK/HATCH PIN|pink/black *1       |-  |liftgate module             |
|         HOOD PIN|pink/black          |-  |pin switch or BCM           |
|  FCTRY ALARM ARM|                    |   |                            |
|FCTRY ALRM DISARM|lt. green           |-  |driver door module in door  |
|       TACHOMETER|white               |   |blue plug, pin 49 @ PCM *2  |
|      SPEED SENSE|GREEN / WHITE         |   |blue plug, pin 32 @ PCM *2  |
|       BRAKE WIRE|white               |+  |brake pedal switch          |
|     HORN TRIGGER|black or blk/yel    |-  |steering column             |
|           WIPERS|                    |   |                            |
|  LF WINDOW UP/DN|blue - brown        |A  |driver door module          |
|  RF WINDOW UP/DN|lt. blue - tan      |A  |front passenger door module |
|  LR WINDOW UP/DN|blue - brown        |A  |LR window switch            |
|  RR WINDOW UP/DN|blue - brown        |A  |RR window switch            |
| SUN RF OPN/CLOSE|blue/red - blue     |A  |sun roof motor              |
|        RADIO 12V|orange              |+  |radio                       |
|     RADIO GROUND|BLACK/ white         |-  |radio                       |
|     RADIO SWITCH|                    |   |                            |
| RADIO ILLUMINATE|BROWN / white (dimmer)|+  |radio                       |
|    POWER ANTENNA|gray                |+  |radio                       |
|       LF SPEAKER|tan - gray          |   |radio                       |
|       RF SPEAKER|lt. green - green   |   |radio                       |
|       LR SPEAKER|brown - yellow      |   |radio                       |
|       RR SPEAKER|blue - lt. blue     |   |radio                       |

Notes:
NOTE: This vehicle has the passlock II immobilizer system that, when adding a remote start, must be interfaced with. PLDATA and GMDL1 .*1 The liftgate glass ajar switch wire is purple. It is also located at the liftgate module in the liftgate.  *2 The PCM (Powertrain Control Module) is on the driver side of the motor. 



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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA




Posted By: CutDog504
Date Posted: July 07, 2003 at 1:01 AM
Try www.thebettersource.com the PLDATA is only $36 on that site, compared to $55 on velocitymotors website. Over 20 dollars cheaper for the same product!!!!!




Posted By: NCSUTrlBlzr02
Date Posted: July 07, 2003 at 7:45 PM

Is the 2  Way really good to spend the extra money because they only reach to about 1,000 feet. and usually I am further than that from my car and so that display wont help me very much because I wont know that the alarm is going off or not if i am further than 1000 feet right?

I am going to get an Alarm with Remote Start, Keyless Entry.  What are the "EXTRAS" that i have to have to by pass everything that I need to by pass. 

I am going to be putting Window Modules in mine also.  Which are the best for this? 

Any other "Fancy" things to add to an Alarm and whatnot?

Thanks a Lot



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