Alarm & remote locks died

[rizzjc]

I've been chasing this problem for a while, and it is driving me crazy. On my '97 V8 I had disconnected the battery one day while I was doing some work, and ever since the security system and remote locks do not work. I have checked every fuse I could find, related or not, and went through connectors to make sure I hadn't unplugged anything, etc, etc.

Anybody ever have the security system just go out, just like that? I don't get the "security" light on the dash when I lock the doors, the remote no longer works, power locks work fine. Didn't find anything disconnected.

I believe the system is in the back, where the rear window washer reservoir is. Any hints on testing it, or anything else obvious to look at first?

 

[dogfriend]

I don't have the security system but there is a really detailed (long) diagnostic section in the 97 Service Manual. If you don't have a copy, you can look on Ebay or try to download the ISO image.

 

[rizzjc]

Hmm, OK, I'll look. Never did see it, but sometimes it's near impossible to find anything in there. Thanks though. I was surprised that my door locks still worked, but now it's getting annoying.

 

[dogfriend]

In the Service Manual, pick Group 4 - Electrical. Its in Section 419-01 Anti Theft.

 

[rizzjc]

Thanks. I'll check it out. Probably be a while before I get to it, unfortunately. Makes these problems that much harder to fix.

 

[ih8chevy]

With my experience as a sales person I found that on newer models when disconnecting the battery the security system would not recognise the keyfobs.
Have you tired to reprogram the fobs?

 

[rizzjc]

Well, no, but I've disconnected the battery hundreds of times. Plus, the door keypad doesn't work, and the "security" light doesn't go on when I lock the doors. It's dead dead dead. Thanks for the idea though.