TDG Mafia # 81
Join Date: Jan 2009
Location: Fort Wayne, IN
Thanked 26 Times in 24 Posts
Check your axle vent. I had the same problem out of my 99. Replaced the vent assembly and it worked perfectly after that. If you are off road alot you will plug the vent rather quickly.
2001 GMC 2500HD EC/LB, 4X4. A few go fast goodies. 540hp/1107tq Danville Dyno 11/09, Kennedy 40% injectors.
05 IH 9400i with Cummins ISX pulling a lumber bunk trailer, stuck in a swamp somewhere in Indiana.
Proud Veteran Served 6yrs Active Army From Germany, Kuwait and Bosnia to Ft. Hood and Ft. Knox