05 Tahoe AC issues

[osiris94ej]

Guys I'm trying to tell you. A full relearn worked in my rig. It's free and worth trying before taking the hush cover or radio or parts of the dash off before replacing one or more of the actuators.
I read the sparkys page a few weeks ago. I had the cover off under the dash on the passenger side, and was prepared to pull and replace the actuator for the drivers side blend door. I stopped., performed the relearn and am glad I did. Perhaps eventually I'll have to replace it, but not until it's fully broken. The body control module controls the hvac. A voltage drop defaults to blend doors to hit. The voltage drop cold be arbitrary, or could be from the grease on the gears inside the actuator dripping onto the contacts. That's when the actuator needs to be replaced, when there is a regular voltage drop that defaults the actuator to full hot position.

I don't like to replace things until I know they're broken. YMMV.

Mine has a code in the bcm for it. Also the command goes out and motor never tries to move.

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[Flexx]

So tonight it did it again for a few seconds, it is just the driver side going hot. Passenger and rear stat cold. So looks like it is the actuator.

Dealer gave me the actuator with it and said it would fix AC just needed install. Will try to tear down this weekend and fix.

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[John Dillon]

Look into the different blend door actuators in the dash to see if one might be causing your issue. I randomly have the "drivers side blows hot " problem, just haven't bothered to fix it yet

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Same problem on mine and hope to fix it tomorrow!

 

[Flexx]

Same problem on mine and hope to fix it tomorrow!

Good luck. Do a write up with pics. I'm still stalling on doing mine.

 

[treehan77]

Took mine out, cleaned it, redistributed th lube, reset it. A year ago, worked since. Obviously somebody replaced it before cause the hard top get to bolt was already missing

 

[Flexx]

Took mine out, cleaned it, redistributed th lube, reset it. A year ago, worked since. Obviously somebody replaced it before cause the hard top get to bolt was already missing

It's my two driver vents that will occasionally blow hot. Do you know which actuator does that? And is it as simple as pull the old one and put in a new one?

 

[osiris94ej]

It's my two driver vents that will occasionally blow hot. Do you know which actuator does that? And is it as simple as pull the old one and put in a new one?

http://www.tahoeyukonforum.com/index.php?posts/983791

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