A/C Vents Blow Cold on Passenger Side But Warm Drivers

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Category: Buick Century Questions and Answers

Problem with my 1997 Buick.
Engine size = 3.3L V6.
Repairs for this problem = A/C compressor, orifice tube and drier replaced about 1 year ago. The problem I have is that when you turn the ac on the cool air only comes out the 2 vents on the passenger side. The 2 vents on the drivers side have warm air blowing out. A/C is controls are set to max air and max cold on the temp control.

Answer: Most common problem is a bad temperature door actuator if it does have dual zone A/C. This actuator controls the temperature door for that side. Dual zone systems have a temp door for each side.

If the car does not have dual zone climate control, this sounds like a problem that some mechanics miss. This problem is a low freon charge in the system. It will not be apparent if just looking at freon gauge pressures- they will be normal. But a system that is 1/2 pound low will cause the passenger side vents to blow cool or cold air, and the drivers side to be less cool or even warm on this car. There is simply not enough freon capacity in the system to cool the air to the drivers side. Only way to be sure is to drain and measure the freon in the system.

Helpful Information


Related Articles

Where is temperature door actuator?

Answer: We would need to know what make and model Buick you are asking about. Are you looking for the drivers side or passenger side actuator?

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Comments (106)
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  • Guest - Marcia

    My 2015 Chevy camero blows warm air out both driver vents. The passenger vent in the middle blows cool but the the passenger vent by the door blows warm also

  • Guest - Rick

    Where is the temp actuator flap on a 2014 GMC sierra?

  • Guest - Terri

    In reply to: Guest - Rick

    Were you able to figure this out? I’m having the same problem with my 2011 acadia.

  • Guest - Bob

    I have a 2005 Equinox that blows Hot on drivers side and cold on Passenger. Where is actuator door on this model please?

  • Guest - Tom

    In reply to: Guest - Bob

    Under the passenger side of the dash, behind the glove box.

  • Guest - Vicky

    Where is temperature door actuator on a 2002 Cadillac deville. Blows hot on drivers side, cold on passengers ? Please

  • Guest - Tom

    In reply to: Guest - Vicky

    One on the drivers side, one on the passengers side, under the dash, on the center plenum.

  • Guest - Leapord Norma

    Where is location the door actuator on a 2007yukon XL at

  • Guest - Gerry

    Where is location of the door actuator on a Buick Century 2004?

  • Guest - john

    WHERE IS THE BLEND ACTUATOR DOOR ON A 2015 CHEVY CAMERO

  • Guest - billy

    In reply to: Guest - john

    Cold air on left hot on right on ac

  • Guest - Angela

    04 Chevy Silverado
    Duel AC
    Will be driving with AC on and the drivers side will start blowing hot air while pasenger side continues to blow cold. Can turn the key off and restart andnir will start blowing cold again. It doeant do it all the time.

  • Guest - Thomas

    In reply to: Guest - Angela

    Mine is doing the same thing. Only my passenger side is blowing cold, drivers side is like an oven. I have a 2005 GMC Sierra SLT 6.0L 2500HD Crew Cab. I also have duel climate controls, I just filled the AC Unit, its on the high side of normal pressure according to the gauge. I dont know what else i can do, i have been looking for answers and yet, nothing..

  • Guest - Emmanuel

    In reply to: Guest - Angela

    I also hace a silverado 2004 and it does the exact same thing... any solutions?

  • Guest - Sara

    In reply to: Guest - Angela

    Where is the drivers side actuator located

  • Guest - Joe

    In reply to: Guest - Sara

    2001 Buick lesabre

  • Guest - Joe

    In reply to: Guest - Sara

    Where is the driver's actuators located on a 2001 Buick lesabre

  • Guest - Keith

    How about 2007 Rav 4, where is actuator?

  • Guest - Erika C

    AC blows cool only on passenger side. Control is set to high fan, lowest temp setting 60°. Compressor replaced, ambient temp sensor replaced, ststem drained/flushed, system vacuumed, freon filled to specified gauge readings, still no cool air on driver side. 2012 Cadillac SRX. Anyone have a solution to this issue? Help is GREATLY appreciated. Thank you in advance.

  • Guest - Paul

    Ford focus 2009 why is hot air coming out at my feet on the drivers side when the ac is off

  • Guest - Paul

    Ford focus 2009 why is hot air coming out at my feet on the drivers side when the ac is off and it's not coming out anywhere else?

  • Guest - CoCo

    Where is location of the door actuator on a Chevy Impala 2010

  • Guest - Jay

    Where is the temperature door actuator on a 2004 buick century
    Thanks

  • Guest - Mary

    My 2008 Chevy Impala just started blowing hot air on driver's side & cold air on passenger side. All this when air conditioning is on.

  • Guest - Mary

    '08 Chevy Impala when air conditioner is on, hot air on driver's side & cold air on passenger side. If actuator, where is it located?

  • Guest - Ellen

    In reply to: Guest - Mary

    2012 Chevy Impala - can you tell me where the Door Actuator is located

  • Guest - billy

    Ac on hot on left cold on right

  • Guest - Allen

    where is the actuator located on the drivers side on a 2001 Pontiac grand prix

  • Guest - Lisa Rysz

    My Pontiac G6 2.4L in blowing cold air from the AC on the passenger side but only slightly cool air on the driver's side. Why? and how do I fix this?

  • Guest - TBaby

    2013 Ford edge cool air on passenger side heat blowing on drivers side, were is the actuator for this vehicle.

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