Question about 2004 Chevrolet Monte Carlo

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My 2004 monte carlo only blows heat out on one side driver side blows cold, I had the water pump replaced last month on it what could it be

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Posted on Jan 02, 2017

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SOURCE: I have a 2004 monte carlo ss 3.8 liter eng. and my

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Posted on Nov 29, 2009

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SOURCE: I have a 2004 monte

Hello and welcome. this is caused by a bad temp door actuator for the drivers temp door. you will need to replace the drivers temp door actuator. this is a electric motor that moves the temp door from cold to hot and hot to cold

Posted on Oct 24, 2010

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SOURCE: My 2004 Monte Carlo blowing

Could be a head gasket leaking compression into the cooling system. This results in an air pocket at the pump that will not allow the coolant to flow at low coolant system pressures. When you rev the engine up it causes enough flow to give heat to the heater core

Posted on Dec 01, 2010

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SOURCE: <yn 81 monte carlo -

check the coolant. then outside under the hood near where the 2 hoses go into the heater core there is a heater coolant control valve. make sure the vac line is connected and not broke. feel the hoses there at the heater core after it warms up. are they hot? if not the valve isnt opening and letting coolant into the core

Posted on Jan 22, 2011

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SOURCE: i have a 2004 Monte

you have "blend doors" under the dash, most likely you have dual side temp controls, and the little electric blend door actuator is bad, they are not easy to get to, but can be done in the drive way, hope this helps,

Posted on Feb 02, 2011

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1 Answer

Monte Carlo Problems


your vehicle has 2 heat sensors I am gathering with 2 fans 1 of the relays is bad most likely ..autozone reads this free and will take out the guessing game

Oct 23, 2013 | Cars & Trucks

1 Answer

I have a 2004 Monte Carlo and My driver side blows out cold air and my passager side has heat. why dont my driver side have heat???????


you have "blend doors" under the dash, most likely you have dual side temp controls, and the little electric blend door actuator is bad, they are not easy to get to, but can be done in the drive way, hope this helps,

Jan 24, 2011 | 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


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.
  • Nov 06, 2010 | 2004 Chevrolet Monte Carlo

    1 Answer

    I have a 2004 monte carlo and my driver side heat does not work it blows out cold air even when the control switch is on the heat my passenger side works fine


    Hello and welcome. this is caused by a bad temp door actuator for the drivers temp door. you will need to replace the drivers temp door actuator. this is a electric motor that moves the temp door from cold to hot and hot to cold

    Oct 23, 2010 | 2004 Chevrolet Monte Carlo

    2 Answers

    I just replaced my 3.4 liter motor in my 2004 monte carlo and I need to figure out why the other motor over heated and blew a head gasket. Before I replaced the motor the heater was blowing cold air and...


    a little tip is to "vent" the topmost hot hose whith the engine running to clear any trapped air in system.....loosen the clip,whilst under pressure,wear rubber bloves cos it bloody hot.......

    Sep 10, 2010 | 2004 Chevrolet Monte Carlo

    1 Answer

    Driver side heat blows cool air passenger side blows hot air


    Hello. The side that is not operating properly has a bad temp door actuator located up under the dash. I am assuming this vehicle has driver/passenger(dual)climate control heat and cold settings. This is a very common problem on these vehicles. Hope you find this information useful!

    Sep 17, 2009 | 2004 Chevrolet Monte Carlo

    1 Answer

    2000 monte carlo how to replace water pump.last bolt


    there should be holes in power steering pump pulley that when positioned correctly the bole should go through one of those holes, if not then you have to remove the pump

    Apr 29, 2009 | 2004 Chevrolet Monte Carlo

    1 Answer

    No heat on drivers side


    look under seat for broken or unplugged wires

    Oct 19, 2008 | 2004 Chevrolet Monte Carlo

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