jimmy.alt3

Hey all! I got an issue with my climate controls. Everything seems to work alright with speeds and on the vents on the dash but if I select the "windshield" the air continues to flow through the dash vents to me but not to the windshield. would this be a bad switch or is there a card inside the dash near the fan motor that I would have to change?? all help is appreciated. I am hoping to have this fixed before the snow flies when I need to heat up my windshield