May be ground out through engine mounts. I'm experiencing these same symptoms myself at 34,000 on a 2016 LT
Found a GM Tech service Bulletin.
Bulletin No.: PIP5211E
Date: Jun-2016
Subject: Rough Idle In Drive
Models: 2015-2016 Cadillac Escalade Models
2014 Chevrolet Silverado 1500...
got the liftgate control module updated today. seems to have fixed the issue in my limited 10 minutes of testing. couldn't get it to close on me by just "dancing" around the back with the key in my pocket. actually had a harder time getting the liftgate to close TRYING to activate it with the...
ok, so my dealer DID say it needs an update!!! But they couldn't do it today....some personnel issues, etc. (small town dealer).
He gave me the printout of the update needed. It's and update dated November 30, 2016 - applicable to 2015 and 2016 Suburban and Tahoe
#PIT5531: Unwanted Hands...
My Tahoe is in the shop today actually for routine oil change. I gave them the printout of the Part number and CVN, but the service desk girl gave me a stupid look on her face. She said the tech would "check on" the liftgate. I'm not optimistic.
yep, mine's turned off too. It's a pain for the wife who now has to manually open/close the liftgate.
I did find some CVN/part numbers for various calibration Not sure if my dealer will know what I'm talkign about though or if these are new or whatever.
Found them here...
Does this update allow you to disable the handfree lift gate feature or does it "fix" the problem of it closing on you when just shuffling your feet a bit ?
Any specific TSB number of anything I can tell the dealer to look up?
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