cluster issue

[train23]

2003 Sierra 2500hd 6.0l

 

If i were to drive from home to the gas station (10 min, Cluster works). Turn my truck off, go inside (maybe 5 - 10 mins). Come out, start my truck. the cluster will not come on right away. I'd drive anywhere from a min to 10 min down the road before it comes on..

 

now for the most part nothing i do will fix it. i tried: turning it off then back on. (nothing), tapping the cluster thinking a lose connection (nothing). there is only one thing that MAY fix it but i cant tell if it just happens by coincidence... my a/c fan nob doesn't work on 1 or 2, it only works on 3, 4, and 5 (opened it up and it looks like everything is making contact, thats a different problem) anyways, if i turn the nob ether from off to 3 or 3 to off it looks like it makes the cluster come on. 

 

any thoughts out there?