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The number 2 is pointing to the mode door actuator.
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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:
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 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 (w/Scan Tool)
Alternate Method (w/o Scan Tool)
Are you sure you have the correct part? Was it purchased at the dealer?
I have not purchased one from there, yes usually they are pretty good.