passlock bypass interfaces

[brad 10+ year member]

I am about to install an alarm on my 2002 trailblazer and already know what alarm I want, but I have a question about the pass lock interfaces. What are the diffecences in these interfaces, and what would you recommend for my car?

PLDATA

GMDL1

DEI 455G

DEI 555L

If there are any other interfaces that may be better, please let me know.

So far these are the interfaces that I have found. If you have installed an alarm in a car that required one of these interfaces, which one did you chose and why?

The alarm I am getting is a viper 791xv if that helps any.

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[brad 10+ year member]

Nevermind, I went to the12volt and found the best interface for my car.

DEI 455G - it's made specially for trailblazers and envoys

(plus its cheaper than some of the others)

 

[netherland24 5,000+ posts]

there might be another one u can use too. i think it is the generic dei for gmc cars

 

[brad 10+ year member]

I also found this T harness that allows me to install an alarm without tampering with any of the origional wires in the steering wheel harness.

T Harness GM-9 on this page.

http://bulldogsecurity.com/bdnew/tharnesspage.htm#tharnessgm9

I have found this for around $15 think that it will really help when installing the remote start and passlock bypass.

 

[KaeZoo 10+ year member]

Nevermind, I went to the12volt and found the best interface for my car.
DEI 455G - it's made specially for trailblazers and envoys

(plus its cheaper than some of the others)

You need a 455G or something like it for the locks and factory alarm disarm, but it doesn't do Passlock. You still need an additional module for remote start.

 

[hifonics1 10+ year member]

the 457g will do the doorlocks, fact security and the passlock II on a trailblazer

 

[hifonics1 10+ year member]

the 457g will do the doorlocks, fact security and the passlock II on a trailblazer