Actuator Recalibration Primary

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 (w/ 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 (w/o 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 B fuse for a minimum of 10 seconds.
6. Install the HVAC B 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.

Actuator Recalibration Auxiliary HVAC

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

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

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

NOTE: Auxiliary HVAC blower operation is disabled during the re-calibration process.

Preferred Method (w/ Scan Tool)

1. Clear all DTCs.
2. Place the ignition switch in the OFF position.
3. Install the auxiliary HVAC actuator.
4. Connect all previously disconnected components.
5. Place the ignition switch in the RUN position.
6. With the scan tool, initiate the HVAC Actuator Recal. feature of the RHVAC/RSA module Special Functions menu.
7. Verify that no DTCs have set as current DTCs.

Alternate Method (w/o Scan Tool)

1. Clear all DTCs.
2. Place the ignition switch to the OFF position.
3. Install the auxiliary HVAC actuator.
4. Connect all previously disconnected components.
5. Remove the HVAC B fuse for a minimum of 10 seconds.
6. Install the HVAC B fuse.
7. Place the ignition switch in the RUN position.
8. Wait 40 seconds for the auxiliary HVAC control module to self-calibrate.
9. Verify that no DTCs have set as current DTCs.