I have a 2000 chevy 4x4 short bed with about 130,000 miles on it . It has been running fine parked it in the drive over night and now it wont start! When you turn the key you can hear the fuel pump cycle on and off, the engine turns over but will not start!!! I sprayed carb cleaner down the air horn while turning the engine over and still nothing. Hope some one can help or have other things to try !