Chevrolet Silverado 1500 Problem Report

Chevrolet Silverado 1500 Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator

(92 reports)

One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.

ac blows hot air on drivers side, have to pull over and restart the engine this sucks big time -
Left drivers side vents blowing hot air when ac on..... passenger side blowing cool air -
Heat on all the time, can not turn off -
a/c and heat all comes out of defrost vent and cannot switch from hot to cold without shouting off engine for a little bit. -
ac and heat doesnt work,fan worksin three of four speeds. -
Drivers side AC will intermittently switch to heater. Only remedy once heat starts is to restart engine. Seems to happen after relative high speed and slow down, will kick off when acceleration resumes. Also seems to happen between 75-85 deg outside temp the most often. It has become major annoyance but expensive fix. -
can not change air delivery from floor outlets -
Ditto. Occasionally the driver side air will go from AC to heat! Have to stop the car and restart it to get it to be AC again. Time to sell and buy a Ford. -
heat on the left side failed. replaced actuator, but unfortunately heater core failed at the same time so i had dto replace that too -
The passenger side air blows only hot air, because the acctuator door is broken. I took the vents out and sealed them so that no air comes out of the passenger side vents. This is obviously not the best solution, but the acctuator is so hard to get to that it isn't worth it to me. -
ac & heat only blow out defroster -
heat wont come out on the floor on drivers side works on dash but not the floor -
When you drive down the road the AC on the drivers side starts blowing out hot air. You have to stop and restart the truck for it to blow cold air again. The passenger side continues to blow cold air and is not affected. It started doing in one time a day but is now doing it four or five times a day. It is currently in the shop. He has replaced two Actuators at $126 each, but he says the problem has not been fixed. I will update this post after I pick it up. -
Still have the problem. I didn't know about the recall -
ac blows hot air on drivers side, have to pull over and restart the engine -
Hot air blowing out friver side vent and cool air on passenger side and air still comes out even though i have it shut off -
I have heat coming out of the driver side cold coming on the passage side when I have it cold and summer. I am to stop turn the truck off and then restart it and most of the time it will straighten out. -
drivers side blows cold air the passenger side blows really hot air. was trying to find a fix -
Air comes out of the defrost(windshield) and floor vents. There is also sometimes a clicking noise in the dashboard. I haven't fixed it yet but I suspect it is the door actuator. -
Ac blows hot on hot day.controler say ext56 -
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