I have a 2008 GMC Sierra 1500 Z71 4X4 with a starting issue. Can anyone help?
About two years ago I was out hunting and on the last night I was there the temp dropped down to about 6 degrees. The next morning my truck would not start. When I turned the key it just cranked over. it took about four or five attempts but it finally started. Ever since then I have had the same problem every time I go to start it. It always starts, but it takes two and sometimes three key turns to start. Sometimes it only takes one time but about 95% of the time it takes two turns to start. The local dealer said that it was the fuel pump the first time I took it there and then two months later they said it was the Throttle Position Sensor. Then a few months ago a local oil change place ran a test on it when I was having the oil changed and they said it was most likely the Mapping Sensor gone bad, not allowing enough air or something like that. Does anyone have any clues as to what it might actually be? Please help if you can. Thanks.