07 trailblazer rear hatch lock?

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=105401
Printed Date: May 14, 2025 at 1:29 PM

Topic: 07 trailblazer rear hatch lock?

Posted By: mrb00st
Subject: 07 trailblazer rear hatch lock?
Date Posted: June 11, 2008 at 8:12 AM

I put a keyless entry on a 2007 trailblazer. I used a 457gw. I have used them on TONS of chevys and have never had this problem.

When u UNLOCK the truck, it works fine. When you LOCK, all the doors will lock, but the rear hatch will not lock?

Has anyone else had this problem yet?

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"If u dont get it on the first try. Smash it"

Replies:

Posted By: Mike M2
Date Posted: June 12, 2008 at 6:43 AM

It's a problem with all 457G's and it's only on the Trailblazer platform. DEI knows about this but i haven't had one work ever. They suggested better ground and a few other things but it doesn't help. I switched to 1700g's or 1700g1's and it cured the problem. For a while we were even adding 556lw's on top of the 457g just to lock the back door. If you want to keep it simplier you will need to add a relay in the back hatch just to lock it...

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Mike M2
Tech Manager
CS Dealer Services

Posted By: KarTuneMan
Date Posted: June 12, 2008 at 10:37 AM

Mike M2 wrote:

If you want to keep it simplier you will need to add a relay in the back hatch just to lock it...

Simple? really?

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