Like ColoradoCub said, no rhyme or reason to it. First 5 or 6 times my truck did it, it just kinda “clicked” and didn’t actually turn the engine over. Each time it fired up on the second start attempt. The last no start episode I had, the engine actually turned over but wouldn’t start. Follow up attempts resulted in the same thing. After maybe 4 tries I disconnected the battery and after reconnecting the truck started right up like nothing happened.