When vents are set to floor A/C blows hot air on drivers side cold air on one side

Good afternoon,

I attached the procedure for the left actuator. I also attached a picture for you.

https://www.2carpros.com/articles/replace-blend-door-motor

Is this the one you replaced?

Roy

Temperature Valve Actuator Replacement - Left Side

Removal Procedure Notice:In order to avoid actuator damage, DO NOT apply power to the actuator when it is not installed in the HVAC module.

1. Remove the center console, if equipped. See: Console > Removal and Replacement
2. Remove the instrument panel (I/P) insulator panel. See: Dashboard / Instrument Panel > Removal and Replacement

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3. Disconnect the electrical connector (1) from the left air temperature actuator (2).
4. Remove the screws from the left air temperature actuator (2).
5. Remove the left air temperature actuator (2) from the HVAC module assembly (3).

Okay, the one under the drivers dash is a mode door actuator which has nothing to do with your issue.

I attached pictures of the location for you.

Roy

Correct.

Roy

Yes, you will need to remove all obstructions to get to the actuator. I would try the instrument cluster and possible the passenger side airbag will need to be removed as well. Here is what the book says in the diagrams below:

RE-CALIBRATING ACTUATORS

When replacing the HVAC control module it will be necessary to allow the HVAC control module to perform a calibration process. When installing the HVAC control module be sure to perform the following:

IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.

1. Place the ignition switch to the OFF position.
2. Disconnect the scan tool.
3. Install the HVAC control module.
4. Connect all previously disconnected components.
5. Start the vehicle.
6. Wait 40 seconds for the HVAC control module to self-calibrate.
7. Verify that no DTCs have set as current DTCs.

When replacing the HVAC actuator it will be necessary to allow the HVAC control module to perform a calibration process. When installing the HVAC actuator be sure to perform one of the following:

IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.

Preferred Method (With Scan Tool)
1. Clear all DTCs.
2. Place the ignition switch in the OFF position.
3. Install the HVAC actuator.
4. Connect all previously disconnected components.
5. Start the vehicle.
6. With the scan tool, initiate the Motor Re-calibration feature of the Heating and Air Conditioning Special Functions menu.
7. Verify that no DTCs have set as current DTCs.

IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.

Alternate Method (Without Scan Tool)
1. Clear all DTCs.
2. Place the ignition switch to the OFF position.
3. Install the HVAC actuator.
4. Connect all previously disconnected components.
5. Remove the HVAC/ECAS fuse for a minimum of 10 seconds.
6. Install the HVAC/ECAS fuse.
7. Start the vehicle.
8. Wait 40 seconds for the HVAC control module to self-calibrate.
9. Verify that no DTCs have set as current DTCs.

Check out the diagrams (below). Please let us know what happens.

With ignition off remove the HVAC/ECAS fuse for a minimum of 10 seconds. Reinstall fuse and start truck, wait at least 40 seconds for the HVAC module to self calibrate