I was on a trip the other day in my 2010 Suburban. About 300 miles into the trip the battery died. This didn’t completely surprise me because startups sounded a little strained the last couple days. Anyway, a call to AAA to jump and a quick trip to Advance Auto and I had a new battery and was on my way. Up until this point the air conditioner was working fine.
We get back on the road (I-95) and the passenger side air is coming out hot. We adjust the temp colder and no change. Closing the vent was the best solution, but that resulted in the dashboard getting really hot. Once the outside temperature got cool enough we shut off then AC and opened the windows. That cooled off the dashboard too.
Any thoughts on what is going on? Are there separate compressors for driver side and passenger side? Maybe a bad thermostat? Could it have anything to do with the new battery (I can’t think of how, but battery was changed and the issue came up)?
Thanks - Drew

 

Just one AC compressor.


My bet would be on one of the under-dash actuators, there may be three. You could test out by figuring out which one works that side, and unplug the harness to it and turn the actuator manually to the appropriate position.

After replacing an electric actuator, the ECM must learn that new actuator to operate properly.

 

You have to reset the actuators after a battery change out,, it is printed out to do this on the internet,,,,if you have trouble finding it send. me a message.

 

Here is what I have for my 2005 : 1. turn ignition to "ON " but do not start
2 Press the OFF button on the heater two times
3 Turn the ignition OFF- wait 30 seconds
4 Turn the ignition ON - but dont start
5 Wait 3 minuets then start vehicle

 

Don't forget to click your heels together, close your eyes and say "it needs to be cold" three times - Stupid computers!!

 

Thanks! I think it worked!! Unfortunately it’s colder outside than the AC goes so I’m not certain, but both sides feel like the same temperature. I’ll never get these reset routines, but I guess it works. Thanks for the guidance.

 

no problem