New to me 1995 Chevy Astro van Alarm removal

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=142222
Printed Date: May 03, 2024 at 3:14 PM

Topic: New to me 1995 Chevy Astro van Alarm removal

Posted By: tbirdman
Subject: New to me 1995 Chevy Astro van Alarm removal
Date Posted: December 11, 2016 at 4:12 PM

Hey folks, new to this forum, new to my vehicle, and never had to remove a defective alarm system before either! I bought this mini-van a few weeks ago and bought it with a few mechanical issues that I thought I could muddle my way through, and I have taken care of several issues to date, but the current problem at hand is one I've come to an impasse now. This van has an outdated alarm that has caused problems such as door locks to be inop, power windows (I believe) to be inop, and other issues. The system itself is a "Sky-Trak model 200M FCC ID:HZP HK 9110 RX" that I have been so far unable to find any wiring diagrams or installation instructions, or even company info for tech assist online. As the vehicle is new to me, I'm in the process of acquiring a factory service manual to aid repair in the future, but decided to attempt removal of the alarm unit myself to see what could be done.

The first thing I did was to disconnect the alarm CPU from the wiring harness and the problem of the alarm randomly arming was now good, thank God! The vehicle starts, and the door locks seemed stronger at the actuators, but the windows still wouldn't go up or down. Next I removed the taps into the stock harness and removed 3 relays associated with the alarm, but I wasn't sure if they were part of the system or the vehicle, and now the van turns over but will not fire up, which leads me to believe it had a kill set-up installed as well, but I don't know the nature of how it is working, meaning is it a fuel pump cut-off or ignition related. Getting the van to run again is my first goal, troubleshooting the other items are secondary to me. Again this is a "1995 Chevy Astro van".Any help would be greatly appreciated. I will post pictures in my next follow up post.

-------------
Same as it ever was!

Replies:

Posted By: tbirdman
Date Posted: December 11, 2016 at 4:46 PM

Here are pics of what I removed.
This is the main unit.
posted_image

With the harness attached.
posted_image

and the pair of relays tapped into the van wiring.
posted_image

This relay is part of the alarm harness, I believe.
posted_image

the relay info...
posted_image

and the way it's wired.
posted_image

This is the other 2 relays that were tapped into existing wires..
posted_image

and how they were wired.
posted_image

All this was tucked into the cavity in the drivers side footwell, and covered by the kick panel.

-------------
Same as it ever was!

Posted By: tbirdman
Date Posted: December 11, 2016 at 4:59 PM

I'm sure I've left an open circuit to somewhere but I don't know the schematics of the alarm unit or the van wiring, how the system is cutting off the vehicle start, to the fuel pump or to the ignition circuit. I just don't know enough about how this unit was wired into the van. Has anyone ever dealt with this unit before or is it standard? I looked online for this units info, manufacturer, wiring, and ran into a dead end! My searches often lead to a "High reach forklift" and a GPS unit of a similar name. I hope someone can help me get this vehicle back on the road! posted_image

-------------
Same as it ever was!

Posted By: Ween
Date Posted: December 11, 2016 at 5:24 PM

On the harness of the alarm, at the end with the relay and 12 pin connector. There are two thicker wires, green and orange, (terminals 30 and 87a at the relay). They are connected in as an interrupt, they need to be jumpered. Unplug the connector at the alarm module itself, and try reconnecting the 12 pin connector with the relay still present. See if the vehicle operates now.

Posted By: tbirdman
Date Posted: December 11, 2016 at 6:16 PM

Ween] wrote:

On the harness of the alarm, at the end with the relay and 12 pin connector. There are two thicker wires, green and orange, (terminals 30 and 87a at the relay). They are connected in as an interrupt, they need to be jumpered. Unplug the connector at the alarm module itself, and try reconnecting the 12 pin connector with the relay still present. See if the vehicle operates now.

So you
're saying disconnect the alarm unit, and reconnect the 12 pin back in the van and try to start it?

-------------
Same as it ever was!

Posted By: tbirdman
Date Posted: December 11, 2016 at 6:27 PM

Ahh! It did start back up! Excellent! Thank you so much Ween! So as far as what needs to be connected, I can trim away all the rest of the wiring to the module and leave the jumpered relay connected, tuck it away and call it a day?

-------------
Same as it ever was!

Posted By: Ween
Date Posted: December 11, 2016 at 6:37 PM

Sure, or trace the wires back to where they're connected and jumper them there.

Posted By: tbirdman
Date Posted: December 11, 2016 at 6:41 PM

I can't thank you enough Bro! Thanks for answering my post so timely, it really helped me out of a bind. We have rain in the forecast and I didn't want to go to work in the rain on my motorcycle! You represent this site very well my friend! posted_image

-------------
Same as it ever was!