Power Mirror not working

My power mirror button doesn't work, I was looking in both fuse boxes (the interior and the one in the engine compartment) and the fuse I found with a reference to Mirror was the Loc/mir 3amp in the interior, and HTR MIR 20amp in the engine compartment, neither appears to be blown, in fact the locks work fine and when I removed the Loc/Mir fuse the power locks didn't work which tells me that this fuse is not the problem.

hi there .I have the same problem with my denali 01 .I had to get a new power mirror switch.the problems is that the contacts in the switch are bad so go and get new 1 at the dealer and it will be 'its easy to replace ""give it a try ok buddy