First time i've seen you on here. Glad to see another 99. I havent had any problems with my alarm. I'm actually still using the orginal battery and key pad it came with, a little beat up and worn down, but still working. I have another one as back up, but havent used it yet, still brand new!

But like offroader said, should be something worn out or wires touching somewhere. Have you had any speakers or anything else wired to your truck recently. If so, maybe the installers did something.

Btw, where are you from and what have you done to your Monty. You can post it up on your signature.

Angelo