RAM Big Horn - AC Blowing Heat?

[Timothy.c.patton]

2019 RAM Big Horn 4x4 w/Cummins and single zone AC with knobs.

AC blows heat, not like warm air, but heat.

I can see when ac is on that, the box starts sweating, and AC is condensation under the truck.

I think it’s the blend door actuator.

Does anyone know where this is located on the 5th Gens?

I know the fourth Gens was behind the glove box, but I pulled mine, which isn’t there.

Any help would be greatly appreciated!!

Also, if you think it may be a different issue, any help would be greatly appreciated.

Thank you, guys!

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[watersupply189]

I had this happen on my 2016 3500 a couple of weeks ago.

It stopped blowing thru the vents.

It turns out it was high humidity that day, and I had the A/C cranked to 65, and it froze up.

After turning it off for 30 min, A/C was working perfectly.

I don’t know if that can help you, but I hope it’s nothing major.


2016 Ram Laramie 3500, G56, 6.7, CC, 4x4

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[Timothy.c.patton]

Found it!

On the 5th Gens, it's below the glove compartment to the left.

I pulled the actuator off and manually moved the blend door to AC until the new actuator arrives!

I figured out what caused it.

I cleaned the EVAP coil with some automotive ac cleaner through the condensation drain as directions permitted, and it leaked down through the blend door and killed the actuator.

But if anyone has this problem, we all know where it is now!

It's tight access but can be done with offset screwdrivers, and I will not pay a mechanic!

I got cold air for now!

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[watersupply189]

Thanks for the update, and glad you figured it out.


2016 Ram Laramie 3500, G56, 6.7, CC, 4x4

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[Timothy.c.patton]

I had this happen on my 2016 3500 a couple of weeks ago.

It stopped blowing thru the vents.

It turns out it was high humidity that day, and I had the A/C cranked to 65, and it froze up.

After turning it off for 30 min, A/C was working perfectly.

I don’t know if that can help you, but I hope it’s nothing major.


2016 Ram Laramie 3500, G56, 6.7, CC, 4x4

Thanks for the update, and glad you figured it out.


2016 Ram Laramie 3500, G56, 6.7, CC, 4x4

I appreciate your help, you are always quick to reply, and it is very appreciated!

My first thought was my tune killed my AC (I deleted the truck this weekend)

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