Every once in awhile my 2006 Colorado (5 cyl) won't start and it doesn't set a code so I have no idea what the problem is. After it sits for 10 or 15 minutes it starts. I do my own mechanic work but it's getting harder with the newer vehicles. Any help is appreciated, MtJohn

 

I faced the same problem, it was a battery problem check it or visit a dealer or local mechanic.

 

I have the same problem. It has to do with the pass lock system. The dealership quoted me at $260 to fix. I just wait the 10minutes and it cranks right up. I wish that was the only issue I have with the truck.

2005 Colorado Z71