[6BT 56]

Yep that would do it . I remember when my 99 3500 dodge chipped off a tooth. 250 mi from home and 1100 mi left to deliver the boat . I pulled the cover off in the truck stop parking lot . Realised it was fawked by now so I just re filled it and carried on as long as i could in 4X4. Made it another 150 ish mi and the thumping was actually making me sick to my stomach it was so bad . Pulled over and scratched my head for a while ?????????? Ended up taking the rear half of drive shaft out , leaving front in the hanger bearing and continued on in 4x4 . Or front wheel drive i guess... lol... Took it real easy with abt 6000lbs in tow (empty return )and made it home 2700 ish mi round trip . Thank god for 4x4 !