I recently picked up this suburban and the first day I had it i flipped on the blower and it came on fine and then quit a few minutes later. I'm looking for some tips on this. I have checked the resistor and it has power to it and good resistance. There is a fuse holder bolted along with the resistor. It had a 5a fuse in it that checked bad, so I replaced it with no change. I did a visual inspection of the blower motor and it "looks" ok, although I'm not sure how to check it electrically. There are 2 hoses coming out of the a/c core housing (the box the resistor is installed in) that look like water hoses that go to nothing. What are those for? Rear a/c? I have pictures, but I'm not sure how to attach them. - - - Updated - - - Ok, so i got the blower working, even though I couldn't tell you how, but there is no heat coming out even with the truck warmed up and I don't hear the a/c clutch kicking in like i did before.