2002 Chevy Avalanche 2WD 5.3 liter

Check the relay it may be sticking, it should be in the underhood relay center and the top of the box should tell you which one, look for another relay with the same number and place that one where the starter relay goes, if it works you will need a relay, you can pull them apart with tiny flathead to see if its stuck or burned, lemme know

jim