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Alarm install -01’GMC 1500HD ?

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=26131
Printed Date: August 22, 2025 at 10:03 PM


Topic: Alarm install -01’GMC 1500HD ?

Posted By: justice29
Subject: Alarm install -01’GMC 1500HD ?
Date Posted: February 09, 2004 at 12:19 PM

I am in the process of purchasing an Autopage 850 alarm/remote start for my 2001 GMC Sierra 1500HD pickup that came with the factory keyless entry/security system.  Are there any special circumstances that I should be aware of?   I have read about some Ford vehicles triggering the alarm after a certain amount of time because of a power shutdown.   

Is there anything like that relating to the GMC P/U's?

Any help is greatly appreciated.

John




Replies:

Posted By: Velocity Motors
Date Posted: February 09, 2004 at 1:27 PM
The only thing you have to do with this truck for the door triggers is to diode isolate them from each other and also you will need a bypas module for the remote start for the truck to bypass the Passlock II system it has. Use the PLDATA for easiest bypass module available.

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



Posted By: soultinter
Date Posted: February 09, 2004 at 3:51 PM
you may encounter the RAP system that keeps your radio on after shutdown.



Posted By: sparkie
Date Posted: February 09, 2004 at 5:33 PM
The factory alarm can be re-armed by pulsing the door lock wire ( + light blue at BCM under steering column) and the driver's doorpin wire ( - tan at the BCM) at the same time. This will also shut off the radio's reatained power circuit.

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sparky


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