replace 457G with what module?

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=62546
Printed Date: July 15, 2025 at 11:21 PM

Topic: replace 457G with what module?

Posted By: dual quad
Subject: replace 457G with what module?
Date Posted: September 11, 2005 at 8:52 PM

I just finished installation of 564T and 457G on a 2005 Envoy. RS works fine. Unlock works ocassionally and lock doesn't work at all. I understand that the 457G has compatibility issues in Trailblazers/Envoys without factory keyless.

My questions are:
- Is it a 455G that I now require?
- Do I leave the 457G installed to carry out the imobilizer function?
- If I simply connect up the lock/unlock (plus data and feed) function of the new module, do I disconnect these wires (blue & green) from the 457G?
- Or do I leave the 457G as installed and diode isolate with the lock/unlock wires of the new module?

Thanks for your help

Replies:

Posted By: mo12v
Date Posted: September 11, 2005 at 10:17 PM

I use OMEGA #DB-GMDLBP GM Doorlock Alarm & Transponder/Passlock Interface or Multi Vehicle Databus Doorlock Alarm Interface #DB-DLMT, because of issues with 457G. I have found that the 455G works, but both have had problems

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MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.

Posted By: gus1
Date Posted: September 11, 2005 at 11:33 PM

The 455G is a good, solid piece that works. Of course, you should also toss a 555L in there, and pull the 457G.

I so far, haven't been very freeking impressed by the 457G. I have had problems with every one that I have put in, and curse them almost weekly. 456 and 455G worked.... didn't forget everything they knew.

Gus

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Wherever I go, that is where I end up......