Rear heat control module question

[big_b_in_PA]

I am replacing the module on the rear hvac assy, and through different searches on google, I can't seems to find what the correct relearn procedure is. Does anyone know what it is, if there is one?

 

[chauncey0337]

Didn't know there was one and I don't think you need to but here's a calibration procedure for the front after changing an actuator. That's the only 'relearn' I know for the hvac system, but what do I know-I'm just a troll.
http://tahoeyukonforum.com/forum/showthread.php?t=15787&highlight=blend+door+actuator+calibrate

 

[big_b_in_PA]

Thanks for the reply, but I did the install yesterday. All I did for a relearn process was to pull the hvac/ evcm fuse under the hood. Then waited about a minute or so and re installed the fuse and started the vehicle, let it go thru the so called process and it's now good to go. It definitely wasn't as hard as I first thought it was. Now the kids will be happy in the cold weather.

 

[Rivieraracing]

Did you try using the rear air before the relearn procedure was done? Was it needed or did you wanna do it anyways? I ask because my rear air system still doesn't seem to be blowing hot enough and I even flushed out the rear core and also confirmed that the blend doors were working. Thinking that doing the relearn procedure might be something I need to try myself!!

 

[big_b_in_PA]

All mine did Before I changed the module was blow cold air, now I have hot and cold. It does get cooler when idling, but as soon as I give it a little gas it circulates warmer coolant into the core. I don't know if that's the same problem you have or a variable, but try taking the cover off the rear hvac unit and checking the hot / cold acuator, or try taking the acuator off and moving the blend door manually.

Good luck!

 

[Rivieraracing]

All mine did Before I changed the module was blow cold air, now I have hot and cold. It does get cooler when idling, but as soon as I give it a little gas it circulates warmer coolant into the core. I don't know if that's the same problem you have or a variable, but try taking the cover off the rear hvac unit and checking the hot / cold acuator, or try taking the acuator off and moving the blend door manually.

Good luck!

Yeah, that's the problem I'm having as well, and yes I did take the cover off and everything moves that's suppose to move!! Just thinking that maybe the hot/cold motor might need calibrating, thinking/hoping maybe it's never getting over to the full hot mode!! Just hoping!! lol