So I have had this for a few years and have had the body control module replaced once for the leaking water. Now the engine reduced power and service stabilitrack is on yet again. I was thinking it was the throttle positioning sensor but I don’t have a scanner to read any codes. What have I there’s tried to get this fixed? It’s a 2007 Saturn outlook XR with a 3.6 AWD. Has about 165k on it.