I have a 2005 Quad Cab 4x4 with cummins diesel and a 6 speed. I notice when I try to put the heater controls to defrost for the windshield, the air doesn't go to top of dash. It just blows out the vents on front of dash. when I go to put it just to the floor, it blows out both floor and dash again. I live in the mountains and I need the defrost to work properly. Has anyone had this problem and know what the fix is? Any ideas would help alot. Thank you, Kevin

 

Sorry about the double post. I didn't think the 1st one went through! Kevin