04 grand prix locking problems
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=103178
Printed Date: May 12, 2025 at 7:42 AM
Topic: 04 grand prix locking problems
Posted By: ksutton
Subject: 04 grand prix locking problems
Date Posted: March 18, 2008 at 3:10 PM
Im having a problem with 04 grand prix door locks I found them at the bcm org/black and RED / black but sometimes it does not always unlock
Replies:
Posted By: Twelvoltz
Date Posted: March 18, 2008 at 3:32 PM
Posting the make and model of the system will help in troubleshooting. Is it just a keyless entry system, security system, or is it a RS with keyless, did you use relays to interface the door locks or just the low current outputs from the brain of the unit, did you diode the outputs if they are low current reverse polarity outputs?
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Installer, IT support, and FFL. I need less hobbies.
Posted By: tonyberg
Date Posted: March 18, 2008 at 4:50 PM
i usually pulse unlock and disarm at the same time. (ie use the unlock wire and diode isolate)
Posted By: extreme1
Date Posted: March 18, 2008 at 6:29 PM
once the stock alarm is armed the unlock switch stops working, use the disarm wire instead to unlock the doors.
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Shaughn Murley
Install Manager, Dealer Services
Visions Electronics
Red Deer, Alberta
Posted By: Chris Luongo
Date Posted: March 18, 2008 at 8:48 PM
It would be much better for the customer to arm and disarm the factory alarm with your aftermarket remotes, and it shouldn't be any more work for you.
The search feature here should already have some older posts about this on the Grand Prix.
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