Not sure if this is the right area to post this but here goes.
I have an 02 Chevy Trailblazer that was working fine up until we got a new truck and left it to sit for a while. We had moved it a couple times as it sat (it sat for a good 3 years), I decided that I want to start using it again since there wasn't anything wrong with it, other than overly sensitive power steering and gas guzzling. When I went to turn the key, nothing would happen. No click noises, no start attempts, the lights in the dash were responding to the key being turned, but that was all. I have already diagnosed the starter relay, and ignition switch and they are fine. If I start the truck through the button on the relay when you pop the cap off, the truck starts and runs fine for about a second before shutting off (likely due to the anti-theft), I have already hooked up a cheap scanner, which comes back with 0 codes. I have tested all of the fuses in the fuse box which are all working. Fuse #17 gets powered on both prongs when turning the key to start. The ground socket for the relay does not respond at all to my test light when turning the key to start. I assume the owner of this truck has this issue before, as there is a red and a black wire hooked up to a cheap metal ON/OFF switch coming directly out of the starter solenoid. All it does is exactly what the relay does when you activate that, it starts the truck for about 1 second before shutting off. I doubt the issue is the neutral safety switch as if it was, the truck would not be starting when activating the relay manually, and it can't be the battery or anything that involves starting the truck, as the truck does start. My assumptions are either the PCM, BCM, or anti-theft, that are causing the problem. I don't want to have to get any new parts but at the end of the day, if I have to I will. I would really like to fix the parts that are already in place, as there was nothing wrong with them before letting the truck sit. The security light is not on, or blinking, but I suppose it could still be that.
I have an 02 Chevy Trailblazer that was working fine up until we got a new truck and left it to sit for a while. We had moved it a couple times as it sat (it sat for a good 3 years), I decided that I want to start using it again since there wasn't anything wrong with it, other than overly sensitive power steering and gas guzzling. When I went to turn the key, nothing would happen. No click noises, no start attempts, the lights in the dash were responding to the key being turned, but that was all. I have already diagnosed the starter relay, and ignition switch and they are fine. If I start the truck through the button on the relay when you pop the cap off, the truck starts and runs fine for about a second before shutting off (likely due to the anti-theft), I have already hooked up a cheap scanner, which comes back with 0 codes. I have tested all of the fuses in the fuse box which are all working. Fuse #17 gets powered on both prongs when turning the key to start. The ground socket for the relay does not respond at all to my test light when turning the key to start. I assume the owner of this truck has this issue before, as there is a red and a black wire hooked up to a cheap metal ON/OFF switch coming directly out of the starter solenoid. All it does is exactly what the relay does when you activate that, it starts the truck for about 1 second before shutting off. I doubt the issue is the neutral safety switch as if it was, the truck would not be starting when activating the relay manually, and it can't be the battery or anything that involves starting the truck, as the truck does start. My assumptions are either the PCM, BCM, or anti-theft, that are causing the problem. I don't want to have to get any new parts but at the end of the day, if I have to I will. I would really like to fix the parts that are already in place, as there was nothing wrong with them before letting the truck sit. The security light is not on, or blinking, but I suppose it could still be that.
