GM Alarm System?

[fpjr0]

I used to install alarms for a living, and I second the get the one with a pager,about the same price , but you could get more out of it, shock sensor, some even come with a noise sensor you can install inside the truck , remote start, auto windows up or down,(if electric windows) or if you have air bags also bags up or down, or if you have shaved door handels you could pop the doors open with the remote etc etc,,I dont know how good you are with wiring, but they are not that hard to install, specially in this older trucks