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!!

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

Thanks!!! I will try this tonight. any one else have any other thoughts?

have someone with a tech II do the relearn procedure

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.

Thanks! I just ordered one from the site you suggested which is the Vertronix model. I will let everyone know how it works. Thanks!!

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.

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

I've got one and it works perfect on my 08