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so I bought it. A 2016 GC overland, High Altitude diesel. Drove to Florida yesterday from MD. 30.7 MPG. Nice. Adaptive cruise control was amazing to use on the drive.

When I shut off the car, may 10 secs after, a noise starts like a pump or something running for a few seconds. Air suspension?

Dave
 

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Dave, your observation is accurate. I have a 2016 GC Summit diesel and once parked the air suspension releases pressure, sounds like a compressor, and if you watch very closely the vehicle lowers just a bit to relieve pressure from within the suspension system. Enjoy! Gary
 
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