Mode door actuator, after jumping the battery the A/C will only blow on the floorboard?

Tiny
EP03
  • MEMBER
  • 2016 CHEVROLET IMPALA
  • 3.6L
  • V6
  • 2WD
  • AUTOMATIC
  • 133,000 MILES
I drive the car listed above Limited. My battery drained and after I jumped it, my A/C will only blow in the floorboard. How do I recalibrate the mode actuator without a scan tool?
Sunday, September 10th, 2023 AT 6:23 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 44,221 POSTS
Sure, here is how to recalibrate the blend door actuator:

Alternate Method (without Scan Tool)

Note: Do not operate any HVAC controls while the HVAC control module is calibrating as this may interrupt the process. If interrupted, improper HVAC performance will result.
Ignition Off - Vehicle Off.

Remove the HVAC control module fuse for a minimum of 20 seconds. Install the HVAC control module fuse. Start the vehicle. Wait 1 minute for the HVAC control module to self - calibrate.

Please let us know if you need anything else to get the problem fixed.
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Monday, September 11th, 2023 AT 5:46 PM

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