Thread: Digital Climate Control issues...

Hey everyone,

My GTP has the digital climate control, but it is having a problem with the driver side blend door. I have pulled the actuator, tried it on the passenger side, and it works great. Just to see, I put the passenger side on the driver side, and it had the same behavior as the original. I disconnected the battery to perform the "relearn" of the actuators, and they both move fully like they should during the relearn. When I change the temperature on the driver side nothing happens, but the passenger side works flawlessly. I also go into diagnostic mode on the climate control and it is showing a system pass code (00 in the -00 menu). I'm pretty much at a loss as to what to check next, what would you guys recommend?

Thanks in advance.

I found this on youtube, It's the same model number as what I have(CJ2), but in a different GM vehicle. Looks like there is quite a bit involved...
Buick - CJ2 Automatic HVAC Systems (1999) - YouTube

Mine stays cold, or at least stays "neutral" It's been cool for a few days here so the A\C doesn't make much of a difference, but the passenger side gets nice and hot while the driver is normal, not hot, not cold.

I was looking at the schematic for it all and it looks like there's only a few wires that run from the control module to the actuators. I'll just take voltage samples from the passenger side then compare it to the driver side and go from there. I think it's the module, I had planned on replacing it anyways because of the buttons being worn through, so I hope it is the module. Previously I was worried it could be a sensor or something of the sorts, but it appears that both driver and passenger side share a lot of the same sensors. Here's the schematic: