Wet / slippery surface like one back wheel slip and then caught the pavement and then a loud bang sound. This has happened twice in the last 1.5 - 2 years. Around 79K miles. I don't off road any ideas what to look for. I never had this issue in 4H mode and never i never had this loud bang in 2wd in snow either where both rear wheels may slip a bit. The bang comes after being at a stop and then starting out and accelerating. No VSC lights or anything just a big bang and then no other issues. Is there anything I should look for on the suspension. I still have Xres and I don't have an electronic locking rear differential. Thanks for all your help.