It is a dual climate system, is there a motor for a damper door or other remedy to this?
U have a bad module or u have a vacuum leak causing this I'll bet on the control module in the dash itself
SOURCE: AC blows cool air on passenger side but warm on driver's
Yes there is both a door and a flapper you have a problem with a blend door motor, it is not switching to cold it is half open and half closed so you need to replace the motor vacuum motor it is under the dash near the heater on the passenger side and if it is the other motor under dash you will have to take part of the dash apart to get to it, to test buy a piece of vacuum hose 1/8 inch diameter about 3 feet long and you can hook it to each of the vacuum motors and **** on the end of the line to see which one is causing you the problem, also could be the control head for the AC inside the car where the controls are, you have to remove the ac cluster ot get to the vacuum switch it's all vacuum operated and if you pull it out you will be able to here an audible sound of air leaking if it's the switch.
SOURCE: 2004 chevy tahoe, dual climate control, blowing different temps
Its more then likely the temp door broken or temp door motor broken/stuck. There is 2-3 of these motors under the dash on the side of the evap/heater core box. Some require extensive labor to replace, good luck
SOURCE: 99 Buick Regal LS dual climate control. No heat passenger side.
the motor for the passenger side
blend door is shot
SOURCE: a/c unit blows cold air out of drivers side vents,
i just fix this problem 8/7/2010 your car is low on freon the dealer won't tell you that they said it would cost me $650 to go under dash
i fix it my self with two can of freon cost me $48 for gauge and freon
at advance auto part
SOURCE: 2003 chevy trailblazer blows cold air on passenger side and hot air on driver side
Sounds like a blend door actuator failure,
Might as well replace both sides
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