2001 LMTV
My CTIS has never worked since I bought my truck. Started messing with it and if I hit the CTIS box with a wrench it would start to work then quit. So I bought a new controller and installed it. It seems to work. I can hear valves opening every 15 seconds or so. After the 4th valve sound I started seeing smoke coming up from under the fuse panel. I shut the truck off let the smoke clear and started it back up. Same thing happen around the 4th air valve sound started seeing smoke. So I shut it down opened up the fuse panel so could see behind it and started it again to find where the smoke is coming from, this time it popped the CTIS fuse.
My CTIS has never worked since I bought my truck. Started messing with it and if I hit the CTIS box with a wrench it would start to work then quit. So I bought a new controller and installed it. It seems to work. I can hear valves opening every 15 seconds or so. After the 4th valve sound I started seeing smoke coming up from under the fuse panel. I shut the truck off let the smoke clear and started it back up. Same thing happen around the 4th air valve sound started seeing smoke. So I shut it down opened up the fuse panel so could see behind it and started it again to find where the smoke is coming from, this time it popped the CTIS fuse.