2013 Gmc 2500hd Air Only Blows Out On The Floor

On the a c controls nothing happens when i change the mode from defrost to vent and other settings.

2013 gmc 2500hd air only blows out on the floor.

Which sounds like an actuator i just don t know which one. Heat and ac both work and fan works at all speeds but i. Jun 28 2016 12 41am. 2009 gmc sierra 2500 hd 43 000 mi visitor.

Will not go to floor only defrost only or panel vent only. Air only blows out the defrost on the dash. I discovered today that i only receive air through the defrost vents. Tried to change it to the floor or the dash vents no deal.

Our most recent two was blowing warm air and then stopped altogether. Chevy truck forum silverado sierra gmc truck forums. Everything worked fine until the autostart run the battery dead and the poor truck. How do i determine what the cause is.

I have put it in full auto mode manually changes the modes and nothing changes. I have a 2004 gmc sierra 1500 with the duel climate control a c. The a c blows cold but sometimes hardly blows any air out the vents and makes a rattling flapping sound on the passenger side by somewhere near where the fan is. The a c and heat work fine but only blows out the defrost vent on the dash.

Jump to latest follow. Current 2004 gmc sierra 2500hd slt lq4. 2013 gmc terrain not blowing any air out of front vents. My wife has a 2009 acadia and no matter was mode you have the vents in dash vents floor vents both the air blows 75 from the floor vents 25 dash vents.

Jun 28 2016 12 13pm. Air won t blow out of the dash. Chevy truck forum silverado sierra gmc truck forums. But our sons very smart gmc guru figured out it was the ignition switch.

If you leave the fan speed all the way up it will usually work all the time but sometimes you can feel the vents start blowing less and less air until finally it is barely blowing. Fan only blows defrost won t change to floor or vent. So i am having trouble with my ac and heater. Air only blowing out of defrost and floor.

Feb 28 2019 8 04pm. Our 04 sierra 2500hd has had on and off problems the last year. And it s stuck on floor and panel vents. The air will only come out the floor or the defrost and it will only work on low or high nothing in between.

Regardless of what setting i have it on the air only comes out of the dflefroster and a little on the floor. I have a 98 and it does this about every other year. My truck has dual climate control digital. Gmc sierra 2500 hd heating and ac temperature and air delivery mode door actuators may fail 169 reports.

Joined jul 3 2010 105 posts 7 jul 19 2010. Yes the ignition switch 35 00 dollars later we have a c not only in control 1 4 but also in 5 again. I can adjust the ac heat no problem it s just not coming out of the front vents or the floor it only comes out of thr defrost vents.