03 chevrolet express 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=98069
Printed Date: May 16, 2025 at 1:32 AM

Topic: 03 chevrolet express security light

Posted By: KarTuneMan
Subject: 03 chevrolet express security light
Date Posted: October 17, 2007 at 7:26 PM

I installed an Astro 3106 alarm/remote start in this van almost 4 years ago. Now all of a sudden the security light on the dash comes on while driving down the road after 10 min. (only a couple times)

When remote starting it comes on EVERY TIME. Shut the R/S off, start with the key, all is well. ALSO.... the parking brake light (wich I have nothing connected to) AND the ABS light comes on... again

intermittently. I do want to believe these issues are related to a 4 year old install.... but who knows. The truck is/was a bare bones rig, no power nothin, so the bypass was the good old fashioned

standard passlock with the dip switches. ( I had it so I used it) Both Ign.'s all connections soldered...etc. etc. etc.

If this was YOUR install....where would YOU start yout troubleshooting?

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Replies:

Posted By: Twelvoltz
Date Posted: October 17, 2007 at 8:17 PM

Had a very similar problem with a PLII truck. The check engine light was coming on (but not the brake light as you are describing). Put in a DEI self-learning bypass and all has been good. I have since switched again to using only the GMBP when available.

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Installer, IT support, and FFL. I need less hobbies.

Posted By: rudydapimp
Date Posted: October 17, 2007 at 9:54 PM

so abs and parking light are coming on both with R/S and key start?? i would suspect something with the bcm.