Post battery swap HVAC actuator damage

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  • Matt
    Senior Member
    • Dec 2008
    • 328

    Post battery swap HVAC actuator damage

    2000 buick LeSabre needed a new steering rack. After repairing the steering I reconnected the battery and test drove the car. All was fine until I attempted to change the HVAC temp and vent during the test drive and they did not respond. All HVAC controls worked prior to any of my repair work. I ended up replacing both mode and temp control actuators! All I can figure is when I reconnected the battery the HVAC module performed a recalibration of all the HVAC actuators, pushing the little plastic gears inside past their normal range of movement and stressing them to the point of failure. I also had a 2008 saturn vue waste an actuator after a new battery install too, suffering the same fate as the buick i assume.
  • greasybob
    Senior Member
    • May 2008
    • 1590

    #2
    Are you sure that everything worked properly before you changed or reconnected the battery ?

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    • Witsend
      Banned
      • Nov 2012
      • 2942

      #3
      I usually hook up auxillary power source to the power cable connection stud at the main junction box and good body or engine ground and just deal with having to work extra carefully under the seat or trunk not to arc the B+ cable against a ground. It's bad enough just having to reset radio time again , let alone dealing with anti theft radio codes, or idle relearns of vehicles that have had batteries disconnected

      Comment

      • Matt
        Senior Member
        • Dec 2008
        • 328

        #4
        Originally posted by greasybob
        Are you sure that everything worked properly before you changed or reconnected the battery ?
        Yeah, it's my personal car.

        Comment

        • Crusty
          Senior Member
          • Dec 2007
          • 2450

          #5
          Originally posted by Matt
          Yeah, it's my personal car.
          Which one is yours?
          The Buick or the Saturn?

          Comment

          • Matt
            Senior Member
            • Dec 2008
            • 328

            #6
            Originally posted by Crusty
            Which one is yours?
            The Buick or the Saturn?
            Buick.

            Comment

            • Witsend
              Banned
              • Nov 2012
              • 2942

              #7
              Matt I recently did the blower motor on an 01Buick LeSabre that was a PITA, saw what happened to you and I didn't want to disconnect the under seat battery for that reason on the old vehicle with brittle plastic actuator gears.

              Comment

              • Matt
                Senior Member
                • Dec 2008
                • 328

                #8
                Nice video Wit. Your the next ScannerDanner!

                Comment

                • Witsend
                  Banned
                  • Nov 2012
                  • 2942

                  #9
                  Nice video Wit. Your the next ScannerDanner!
                  Think I'm more like Slam'er D@mn'er

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