2004 Monte Carlo SS. Engine 3.8L  K model. Checked fuses & good. Replaced A/C heater control unit. Question: My car has dual climate control and the drivers side is not producing any heat while the passenger side does.

 

Answer: I'm going to have to assume that the driver's side still blows cold air conditioning, rather than none at all. An easy first step is to try to calibrate the actuators for the HVAC system. You can remove the fuse for the HVAC system for approximately 1 minute, then reinstall, then on the next key cycle the control head will recalibrate and re-home the actuators. Don't touch any controls for 2 minutes. If that doesn't work, you probably have a faulty actuator on the door that controls the cold/hot air to the driver's side. Not a simple fix, but not extremely difficult if you are mechanically inclined.

 

To replace the temp door actuator for the driver's side you will need to remove the lower dash trim and kick panels on the LH side of the dash. The actuator itself is on the left side of the heater case held in with three small screws. You may want to have a local dealer show you a picture so you replace the correct one. After removal of the old one, you will have to line up the cam on the actuator with the lever on the door. This may take a couple times to get it right. Once the new one is installed, recalibrate again and you should be good.

 


Leave your comments

Post comment as a guest

0

    Comments (2)
    Subscribe To These Comments-----   

    • Guest - Tanya

      where would I find the hvac fuse at?

    • Guest - Tim

      In reply to: Guest - Tanya

      I beleive it is in the dash fuse block on the drivers side. But that depends on what year your Monte Carlo is.

    Latest Articles

    Crown Vic ECM Location P0112 ...

    Can you please tell me where the PCM is located on a 1997 ...

    Ford Focus Gear Shifter ...

    So I Have A ford Focus 2009 and the other night I got a ...

    2001 Chevy Malibu ESC Code

    Have a 2011 Chevy Malibu my wife was telling me the code ...

    Chevy Malibu TPS Low Voltage ...

    2000 Malibu 3.1l shows TPS low voltage code. I replaced the ...

    Chevy Impala Thermostat Was ...

    i have 2005 Impala the thermostat was stuck to where it ...

    How Things Work

    Air Bag (SIR) System Function and Operation

    The Supplemental Inflatable Restraint (SIR) system supplements the protection offered by the driver and front passenger seat belts. The SIR system deploys an air bag from the center of the steering wheel and from the right side of the instrument panel. The knee bolsters and the steering column absorb crash energy. The driver and passenger knee bolsters are below the instrument panel.

    Read more...

    Common Engine Codes

    Electronic Throttle Actuator Control Codes

    P0506 - P0507
    The Electronic Throttle Control (ETC) System uses various inputs from the powertrain control module (PCM). This system uses the inputs to control the idle speed through serial data circuits to the throttle actuator control (TAC) module.

    Read more...