I recently bought a 2001 z71 silverado extendcab. first one and lovin it compared to dodge. the only complaint i have is that dang ding that goes off when you open your door and the keys r still in the ignition. i went through the fuse box and found the one i can remove to eliminate that noise. but the engine will not run after the fuse is out. now since i have installed a Sony CD player the dang ding stays on till i open the doors after shutting the truck off. I'm sure I'm gonna spend some money trying to eliminate it. in my old dodge it was a relay switch that i just pulled out and it didn't bother a thing. does anyone know of this problem and if so how did u take care of it. oh it has a half butt factory security system on it.