AIR CONDITIONER ONLY BLOWING COLD ON ONE SIDE AFTER DISCONNECTING BATTERY
On my 2005 GMC Yukon, the A/C on the passenger side blows hot at 60 degrees set, other side blows cold at 60 degrees after I disconnected the negative terminal post to complete a cold air intake installation??
Re: AIR CONDITIONER ONLY BLOWING COLD ON ONE SIDE AFTER...
Turn your AC off.
Turn the car off
Crank the car
turn ac on drivers side to 60
passenger side to 90
wait 1 minute
turn AC off (very important)
turn car off
turn car back on
switch driver's side 90 passenger 60
wait one minute
turn AC off( very important)
turn car off
turn car on
AC 70 both sides
your ac should be blowing cold
If not, you have an expensive problem
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you need to change drivers side temp door actuator then disconnect battery for 5 seconds and reconnect after changing the part, turn key on for 60 seconds with touching heater control to allow actuator to program and then it will work.
need to go to dealer to have HVAC module reprogramed. whenever diconnecting battery power on these vehicles you can connect a 9 volt battery between neg and pos to keep the memory in the computers. I am an master ase technician and 5 classes from gm world class tech.
You have dual zones that are controlled by temperature actuators the passenger side has lost its memory or has gone bad you can put it in self programming by disconnecting the battery for ten minutes then hook it back up start the truck turn the temperature control on but do not touch any other controls let it go thru the self programming for about 6 to 7 minutes then select your temperature you want if it still does not work properly you may have a bad actuator or a bad connection at the actuator
My wife had same problem in 2005 yukon. Turn both temperture controls on dash all the way as warm as they will go, Wait about 1 or 2 mins and turn back to coolest setting. Cleared our problem right up. Do this with car running and air on.