Actuator Recalibration
Note: 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.
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:
- Place the ignition switch to the OFF position.
- Disconnect the scan tool.
- Install the HVAC control module.
- Connect all previously disconnected components.
- Start the vehicle.
- Wait 40 s for the HVAC control module to self-calibrate.
- 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:
Preferred Method (with Scan Tool)
Note: 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.
- Clear all DTCs.
- Place the ignition switch in the OFF position.
- Install the HVAC actuator.
- Connect all previously disconnected components.
- Start the vehicle.
- With the scan tool, initiate the HVAC Actuators re-calibration feature of the Heating and Air Conditioning Special Functions menu.
- Verify that no DTCs have set as current DTCs.
Alternate Method (without Scan Tool)
Note: 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.
- Clear all DTCs.
- Place the ignition switch to the OFF position.
- Install the HVAC actuator.
- Connect all previously disconnected components.
- Remove the HVAC control module fuse for a minimum of 10 s.
- Install the HVAC control module fuse.
- Start the vehicle.
- Wait 40 s for the HVAC control module to self-calibrate.
- Verify that no DTCs have set as current DTCs.
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© Copyright Chevrolet. All rights reserved |