So I’m parked for the night & get into bed. However, slightly after I park & shutdown, I’ll feel my truck (2014 Freightliner Century) start to lightly jerk, at first, every couple of seconds then every couple of minutes and eventually it stops jerking after like 4 or 5 hours. When it jerks it sounds & feels like another vehicle is hitting it from the back. I really don’t know why it does this. Besides this, it’s a great truck. I checked the airbags for punctures/leaks and found none.

