Question about 2004 Chevrolet Monte Carlo

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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

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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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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???????


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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.
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  • Remove the mounting screws from the left air temperature actuator.
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    Sounsds like the HVAC is dual system, and the door motors have failed, try swapping the door motors with the door motors that work on the passenger side.
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    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!

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