HVAC Mode and Temp not working

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

slawminyaw

Junior Member
Joined
Jul 7, 2026
Posts
1
Reaction score
0
Location
Bismarck
Ram Year
2010
Engine
Hemi 5.7
Not sure what else to try, I am not a mechanic by any means but have a tried a few things before coming here.

About a month ago my 2010 dodge ram 1500 hemi 5.7 hvac unit stopped working. The fan speed works perfectly. all of the lights on all 3 knobs work, but the temp and fan mode are not operational. I tried changing actuators, that didn't fix it. I tried a new control module that didn't fix it. I unplugged the battery for 10 minutes, nothing. I made sure to recalibrate holding the recirculation knob for 10 seconds than 3 until it starts flashing nothing.

I did notice that I am able to control one actuator while it was hanging free, I believe it was the far left one, the other two, nothing. When I turn the truck on, all of the actuators do their startup and turn all the way right, but I can't get them to move after that.

is this a wiring issue? or maybe someone has another trick I can try or maybe something that I missed?
 

Latest posts

Members online

Forum statistics

Threads
211,381
Posts
3,065,847
Members
171,789
Latest member
phorrestphire
Back
Top