2011 Silverado 1500 4wd problem

By Ben Travis
April 7, 2020 in Advanced Drivetrain, Suspension & Tuning

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Ben Travis

Posted April 7, 2020

Hello, I’ve got a 2011 Silverado 1500. It has manual 4wd in the floor. When I put it in 4wd, high or low, it doesn’t go in and my light doesn’t come on but you can hear the actuator up front working but it never “turns off” until I put it back in 2wd. It is a brand new actuator. Any ideas??

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- Hot air constantly blowing through floor vents, drivers side only?
  
  By davester · Posted 4 hours ago
  
  And there aren't any "bellows". There are solid plastic doors the actuators move, which largely seal just by themselves, and then have a strip of foam around the edge to better seal the door. The foam does deteriorate over time, but this is unlikely to be a significant cause of the problem.
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  By davester · Posted 4 hours ago
  
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  Prolly diaphragm bellows rotted out. Given the age of your truck.
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