Question about 2004 Chevrolet Monte Carlo

1 Answer

Driver side heat blows cool air passenger side blows hot air. Both thermostats are on hot, recently had no heat flushed radiator and got half heat

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 335 Answers

Hello, this is cused by the drivers side temp door actuator. there are two electric motors that move the temp doors from cold to hot. there is one on the drivers side and one on the passenger side. you will need to replace the one for the drivers side.

  • Remove the left instrument panel (I/P) insulator.
  • Remove the knee bolster bracket bracket. Disconnect the electrical connector from the left air temperature actuator.
  • Remove the mounting screws from the left air temperature actuator.
  • Remove the left air temperature actuator.
  • Posted on Nov 06, 2010


    1 Suggested Answer

    • 2 Answers

    SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

    Hi there,
    Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

    Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

    Here's a link to this great service

    Good luck!

    Posted on Jan 02, 2017


    Add Your Answer

    Uploading: 0%


    Complete. Click "Add" to insert your video. Add



    Related Questions:

    1 Answer

    Blows heat on passenger side only . Blows cold air on drivers side only

    A nice radiator and heater core flush should fix you up.

    Nov 17, 2014 | Cars & Trucks

    1 Answer

    Hot heat at idle cool when driving

    is there a chance that one of your heater hoses are clogged? or where they connect to the engine are clogged still? sounds like a clogged system. Cracked heater housing? Outside air bypassing the heater coil while driving?

    Dec 13, 2013 | 2004 Pontiac Grand Prix

    2 Answers

    My Buick 95 Gran Sport's steaming/had shut down on the freeway

    sorry about this, but it appears that 2 types of sealant have blocked your thermostat. You have lost circulation in your cooling system, you will need to reverse flush your full cooling system and have your radiator repaired or replaced. never mix your chemicals in the cooling system because there are 2 particular chemicals used in different products that when combined can blow up (nitro)

    Nov 27, 2013 | Buick Cars & Trucks

    1 Answer

    Half of my radiator is hot and the other half cold, my 2001 cadillac deville running hot

    Sounds like you have a clogged radiator, i would recommend trying to flush it out before replacing it.

    Sep 08, 2012 | 2001 Cadillac DeVille

    2 Answers

    Drained radiator added prestone Radiator flush refilled and started overheating, drained radiator replaced thermostat and now I get no heat from heater,Radiator water is hot

    disconnect the heat hoses going into fire wall , put hose into one with pressure and flush as it sounds like it could be bloked in the heater core,the other thing that could be the problem be the hot ,cold switch as it restricts the flow to makes the heater hoter or colder , it might need tlc or replacing as it is manaul not elec

    May 08, 2012 | 1995 Toyota 4Runner

    2 Answers

    Why would my heater blow out cool air when sitting still and then hot air when going down the road and then it's not all that hot

    Try flushing or blowing high pressure air through the heater core lines. its sludge build up and need to be flushed through heater core only. check antifreeze fluid level. only put in straight antifreeze, do not mix. most people do not know what mixture should be, so be safe and add straight, it will not hurt it, i run 100% straight antifreeze and never had a problem or worry about it ever freezing and cracking my block, heads or radiator cracking.

    Jan 29, 2012 | 2001 Daewoo Nubira

    1 Answer

    Heater core is working properly but car will not blow hot air only cold air i am thinking the flapper that controls hot \ cold is stuck in the cold air position

    To troubleshoot this types of problem,click the link below :----
    --------Go through the procedure to confirm the issue.

    Engine Overheats and heater blowing cold?

    Heat blows cold on drivers side and hot on passenger side?


    This will help.Thanks.

    Jan 25, 2012 | 2001 Buick LeSabre

    1 Answer

    No heat on passenger side and warm air on drivers side

    heater radiator blocked or partially blocked,drain antifreeze and save ,remove the inlet and outlet pipes for teh heater and flush in both directions repeatedly .brown rust should come out,if not a lot comes out then fit two pieces of pipe about a foot long to heater unit pipes and mix some caustic soda and pour in one pipe with a funnel till it comes up in other pipe leave for a while then flush again and you might need to repeat this two or three times

    Dec 16, 2008 | 1998 Cadillac DeVille

    1 Answer

    A/c and heater

    Is it leaking antefreeze?
    The thermostat might be gone or needs a bigger thermostat
    It could be a vaccum leak for the drivers side blowing cool air and the passenger side blowing warm air
    Does it have dual air control switches one for drivers side and one for passengers side?

    Oct 28, 2008 | 2003 Pontiac Grand Prix

    Not finding what you are looking for?
    2004 Chevrolet Monte Carlo Logo

    820 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Chevrolet Experts


    Level 3 Expert

    80407 Answers

    Colin Stickland
    Colin Stickland

    Level 3 Expert

    22326 Answers

    Ronny Bennett Sr.
    Ronny Bennett Sr.

    Level 3 Expert

    6927 Answers

    Are you a Chevrolet Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides