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2009 hummer h3t security light

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=123111
Printed Date: July 18, 2025 at 5:15 AM


Topic: 2009 hummer h3t security light

Posted By: jgc10
Subject: 2009 hummer h3t security light
Date Posted: August 13, 2010 at 11:18 PM

I've installed  a remote start and kelyess entry on a 2009 hummer h3t.  Used the 2 relay method for the bypass, tach installed.  The H3t remote starts perfectly WITHOUT the security lights turning on.  Locks and unlocks perfectly  I can start the vehicle with the key and still no security lights are on.. Here is the problem.  When the vehicle is running and i remote start the vehicle, the security light comes on and only the Lock button work on the remote.  I can kill the remote start with the brakes or remote and then start it again with the remote and the security light does not come on.  The unlock button will work intermittently.  I've checked the wirings and resistance value atleast 3 times.  Any ideas.. 



Replies:

Posted By: kreg357
Date Posted: August 14, 2010 at 3:45 PM

Ok.  If I understand you, everything works great unless you try to enter "Idle" or "Pit Stop" mode. 

 Idealy your Passlock II relays should only be energized and supplying the resistance signal when the remote start outputs a +12v on its' Starter output wire.  That shouldn't happen if the remote start sees the car is already running when you press the start button to enter "Pit Stop" mode.  ( Some Passlock II relay diagrams used Ignition to energize the relays. )

Can you detail the relay bypass wiring?  Also the Brand / Model of Remote Start?



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Soldering is fun!




Posted By: kreg357
Date Posted: August 14, 2010 at 4:10 PM

Here is a Colorado Passlock 2 relay wiring diagram from Bulldog Security:  https://www.bulldogsecurity.com/diagrams/extrainfo/diagrams/14301_COLORADO_COLORADO-CANYON%20PASSLOCK%202%20BYPA.pdf



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Soldering is fun!





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