Is this something that i could fix at home? It says its a sensor, fuse, or maybe a blocked air line but i dont know where to look. Can anyone help with this code and problem. I also have two other problems. I just replaced the dashboard cluster in the trailblazer about 800 miles ago and now my fuel gauge is wacky, it say empty even though i just filled it up and sometimes half. The othe is the pass. side window switch to make it go up and down stop working....and so did the drivers side but the drivers side works for all but the pass side. cant find a fuse or relay for it. Can anyone help? Thanks