Don't use chain for tugging out equiment, get a nylon yank strap with woven loops on the end.
Use heavy stuff (preferably towhooks) to connect it because it can generate huge forces.
In my 2000 lb Suzuki Samurai I have yanked our Dakota with plow and sand out of a snow bank when it rode up and dropped in the other side.
Also have yanked a toyota 4 runner that was burried over the hood in a mudhole.
I can't imagine what a suburban could yank out!
Ken