Last year I bought an 08 suburban 2500 with 51,000 miles. Body in excellent condition. I planned on using this to tow my trailer and be an everyday driver for my wife for many years to come. It ran an...
This may sound crazy, but I was just talking to a coworker this morning who has a 2010 Suburban that was making a similar noise to yours. He figured a problem of some kind in the rear end. A local mechanic looked at it with him, and it turned out to be a rusted parking brake that he had never used.