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ATTENTION: Refer to the appropriate shop manual for your vehicle to obtain specic service procedures for this part. If you do not have
a service manual or lack the skill to install this part, it is recommended that you seek the services of a qualied technician. Pay special
attention to all cautions and warnings included in the shop manual. Read and follow all instructions carefully.
TECH NOTES: INSTALLATION
©2019 Dorman Products, Inc.
No reproductions in whole or in part without prior written approval.
Disclaimer:
Even though every attempt is made to ensure this information is complete and accurate, it is impossible to account for all possible circumstances or situations. Please consult with a qualied auto technician
before attempting to perform any work you are not qualied to do. Automobiles can be hazardous to work on; be sure to take all necessary safety precautions. Failure to do so may result in property damage
or personal injury. Certain motor vehicle standards and performance requirements may apply to your motor vehicle (such as Federal Motor Vehicle Safety Standards by the National Highway Trac Safety
Administration). Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature.
Buick 2007–04, Cadillac 2006–02, Chevrolet 2009–1999, GMC 2009–1999,
Isuzu 2008–03, Oldsmobile 2004–03
WARNING: DO NOT POWER THE ACTUATOR UNTIL INSTALLED.
Re-Calibrating Actuators (Primary)
When replacing the HVAC control module it will be necessary to allow the HVAC control
module to perform a re-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 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. Re-connect all previously disconnected components.
5. Start the vehicle.
6. Wait 40 seconds for the HVAC control module to re-calibrate.
7. Verify that no DTCs have set as current DTCs.
When replacing the motor assembly it will be necessary to allow the HVAC control
module to perform a re-calibration process. When installing the motor assembly 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 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 motor assembly.
4. Re-connect all previously disconnected components.
5. Start the vehicle.
6. With the scan tool, initiate the Motor Re-calibration feature of the HVAC module
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 calibrating. If interrupted improper HVAC performance will result.
604-120
2
ATTENTION: Refer to the appropriate shop manual for your vehicle to obtain specic service procedures for this part. If you do not have
a service manual or lack the skill to install this part, it is recommended that you seek the services of a qualied technician. Pay special
attention to all cautions and warnings included in the shop manual. Read and follow all instructions carefully.
TECH NOTES: INSTALLATION
©2019 Dorman Products, Inc.
No reproductions in whole or in part without prior written approval.
Disclaimer:
Even though every attempt is made to ensure this information is complete and accurate, it is impossible to account for all possible circumstances or situations. Please consult with a qualied auto technician
before attempting to perform any work you are not qualied to do. Automobiles can be hazardous to work on; be sure to take all necessary safety precautions. Failure to do so may result in property damage
or personal injury. Certain motor vehicle standards and performance requirements may apply to your motor vehicle (such as Federal Motor Vehicle Safety Standards by the National Highway Trac Safety
Administration). Be sure that your work is performed in accordance with such standards and that you do not disable any motor vehicle safety feature.
Alternate Method (W/O Scan Tool)
1. Clear all DTCs
2. Place the ignition switch to the OFF position.
3. Disconnect the scan tool.
4. Install the motor assembly.
5. Re-connect all previously disconnected components.
6. Remove the HVAC B fuse for a minimum of 10 seconds.
7. Re-install the HVAC B fuse.
8. Start the vehicle.
9. Wait 40 seconds for the HVAC control module to re-calibrate.
10. Verify that no DTCs have set as current DTCs.
