2010 GMC Acadia Heater

Tiny
DANLENIUS
  • MEMBER
  • 2010 GMC ACADIA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 50,000 MILES
My wife's Acadia is having problems with the heating system. First, it was blowing cold air on the passenger side and the heat was working on drivers side. I actually bought a new blend door auxiliary, but realized that controlled which vents would be used, so I didn't put that new one in. Well, now she said that it's not blowing warm air at all and I believe she said that the control for the vents wasn't working. So, before I tear it apart and not even know what I'm looking for, I want to see if anyone has a idea of what could be causing this and what I should be checking?
Do you
have the same problem?
Yes
No
Tuesday, October 13th, 2015 AT 11:51 PM

4 Replies

Tiny
HMAC300
  • EXPERT
Try pulling fuse for hvac inside car first with key on. Leave it out for 60 seconds then reinstall it may reset the actuators. If that doesn't work see if actuators are getting power, it may be a bad actuator if no power then get it scanned for codes by a pro. It may be the control head
Was this
answer
helpful?
Yes
No
+7
Wednesday, October 14th, 2015 AT 7:20 AM
Tiny
DANLENIUS
  • MEMBER
Thanks a lot! I will try those options and let you know how it went.
Was this
answer
helpful?
Yes
No
+1
Wednesday, October 14th, 2015 AT 10:36 AM
Tiny
DANLENIUS
  • MEMBER
Well, I'm actually sitting in her car right now. I tried resetting it and now I'm not sure what exactly was wrong when my wife told me, but now the heat works only on the drivers side and is blowing out of the floor and defrost vents. The passenger side only blows cold air. Also, it won't change to different vent selection. It only blows out of the defrost and floor vents on both sides, but the temp only works on drivers side.
I know that the actuator on the passenger side, controlled the vent selection, but does it have anything to do with the temp for the passenger side? I don't think it does, but I really don't know. If not, what controls the temp for the passenger side? Could there be something wrong or disconnected behind the actual temp control console? I was going to take it apart, but then I thought I'm gonna ask you first to see if there's even a chance of that happening.
Was this
answer
helpful?
Yes
No
+2
Wednesday, October 14th, 2015 AT 7:07 PM
Tiny
HMAC300
  • EXPERT
From your explanation it sounds like it is not an actuator. There are two shown in pic one arrow is for right side heat and two arrow is for direction or mode. Try the reset one more time turn key on pull hvac fuse inside truck and leave it for 60 seconds. It can take for another minute for the actuators to reset so don't turn key off. If it continues what it is doing then take to a local pro and have it scanned for codes because it may be a control head or one of the doors have broken.
Was this
answer
helpful?
Yes
No
+4
Thursday, October 15th, 2015 AT 6:04 AM

Please login or register to post a reply.

Recommended Guides