3AM Alarm on 99 Blazer woke me and all the neighbors!! Jumped out of bed; ran outside (bare footed & cut foot) to find nothing. Punched the "unlock" button on remote and alarm stopped. Relocked and back to bed wondering what the hell happened. 0830 all is well; eating breakfast; the the damn horn starts blowing again---run outside (shoe's on) found nothing. Pushed "Unlock" bottom on the remote and it shut up.

What the hell is going on?? I can't handle this every night!!!

 

Could be prankster's... Is that the first time it's happened? You never know what the neighborhood kids are up to...

 

your sencer could be to touchy and the wind or something like that could be setting it off.

 

No neighborhood kid's parnk; no wind; no nothing!! Bought it new in 99 and put 70,000 miles on it; never happened befor.

Dome light fails to come on when door's are opened, but comes on when over ride button depressed. I think there is a connection between the two, so could this be where my trouble is comming from??

 

my **** dont have alarm but for sum reason this one day it kept going off the panic button wouldnt shutoff into i put the buttons and all it was mad weird.. kinda just like locked up and did it on its own.

 

I have run across cold temperatures causing the horn contact to actually move and make the horn blow. I would check all your dome lights and door switchs. I have a factory GM alarm and if the dome lights come on triggered by any of the doors being opened, the alarm sounds. I hope this helps.