Hummer H2 For those who like a little more gleam to their Hummer, the H2 offers a similar rugged look as the H1, but as a lower cost, and with more added features, making it almost a massive luxury SUV.

HEAT / AC Issue

  #1  
Old 05-28-2019, 07:29 AM
Junior Member
Thread Starter
Join Date: May 2018
Posts: 10
Default HEAT / AC Issue

Hello Everyone, I am having a problem with my climate control system in my 04 H2. The driver side was stuck on heat and the passenger side would blow ice cold air. I followed the GM reset procedure and now both the driver side and passenger sides are stuck on heat. Should I try anything else before I tear the dash apart and change the blend actuators?
Thanks!!
 
  #2  
Old 05-28-2019, 08:47 AM
H2Miami's Avatar
Senior Member
Join Date: Sep 2011
Location: Sunshine state , MIami
Posts: 1,277
Default

Try this

Start truck .
Put Ac in auto mode
Turn off engine
Remove battery . Both + and -
Give a day . At least a night
Connect batt
Turn key to on possition. Dont start engine
Give it 3-4 min to relearn .. DONT TOUCH THE AC CONTROLS
turn key to off for not more than 15 sec
Start engine and test Ac
If it doesn't work then you may need to replace the actuator and again follow the steps

But it is weird the two sides went bad at same time . I would look for more info before trying to change them
 
  #3  
Old 05-28-2019, 09:37 AM
Junior Member
Thread Starter
Join Date: May 2018
Posts: 10
Default

Thanks!!! I will try this tonight. any one else have any other thoughts?
 
  #4  
Old 05-28-2019, 07:40 PM
Senior Member
Join Date: Apr 2010
Posts: 266
Default

have someone with a tech II do the relearn procedure
 
  #5  
Old 05-29-2019, 10:50 AM
Junior Member
Thread Starter
Join Date: May 2018
Posts: 10
Default

Has anyone tried the TECH II Clone on their H2?
 
  #6  
Old 05-29-2019, 11:42 AM
MixManSC's Avatar
Senior Member
Join Date: Jan 2017
Location: SC
Posts: 1,116
Default

Originally Posted by asorber View Post
Has anyone tried the TECH II Clone on their H2?
A few of us have them..... works great! Can also get to things like the rear air ride (if yours has that) which no other tool can deal with.

That being said I've seen on other forums where some people have major issues with their clones. Best I can say is I got mine from http://www.chinacardiags.com and it works perfect.
 
  #7  
Old 05-29-2019, 11:46 AM
Junior Member
Thread Starter
Join Date: May 2018
Posts: 10
Default

Thanks! I just ordered one from the site you suggested which is the Vertronix model. I will let everyone know how it works. Thanks!!
 
  #8  
Old 05-29-2019, 12:24 PM
MixManSC's Avatar
Senior Member
Join Date: Jan 2017
Location: SC
Posts: 1,116
Default

It will come in handy sometimes. Now figuring out how to use all of the functionality will take a bit too. You can pretty much get right into diagnostics and whatnot pretty easy though. Programming takes a bit more as you will need to either install TIS2000 or pay for a short subscription to the ACDelco TIS system. TIS2000 is a pretty old program but does still have updates and whatnot for some things in our H2's. The tricky bit is it runs on Windows XP. There is tons of info online about ways of getting that software installed and working though. The Tech2 will also come in handy for other GM vehicles as well and can give you a lot more info that most any other scan tool.
 
  #9  
Old 05-29-2019, 02:07 PM
hummer_on_fumes's Avatar
Senior Member
Join Date: Jul 2013
Location: Virginia
Posts: 407
Default

Originally Posted by asorber View Post
Hello Everyone, I am having a problem with my climate control system in my 04 H2. The driver side was stuck on heat and the passenger side would blow ice cold air. I followed the GM reset procedure and now both the driver side and passenger sides are stuck on heat. Should I try anything else before I tear the dash apart and change the blend actuators?
Thanks!!
FYI if the drivers side is the one you're having the issue with, it is one of the easier actuators to replace. It is under the glove box and you can replace it just by removing the plastic underneath the glove box. Now if your passenger side was blowing hot and your drivers was cold, that's when you have to take the whole dash apart
 

Last edited by hummer_on_fumes; 05-29-2019 at 02:11 PM.
  #10  
Old 05-29-2019, 02:46 PM
Senior Member
Join Date: Apr 2010
Posts: 266
Default

Originally Posted by asorber View Post
Has anyone tried the TECH II Clone on their H2?
I've got one and it works perfect on my 08
 

Thread Tools
Search this Thread
Quick Reply: HEAT / AC Issue


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.