It might be a detroit diff but it sounds like an open diff which is for pretty much driving off the dealer floor and just working. Only one wheel drives the truck with an open diff. Id say save and get the tru trac.

 

as far as i can tell, this is the one he's talking about

http://www.eaton.com/EatonCom/Produc...less/index.htm

im gonna talk to him about the truetrac. thanks for the help guys

 

well thats for ATV's but a locker will lock both wheels and thats only for off roading slowly, when driving on road it turns to an open diff so you'll get the one wheel burnout. Id say try to get the tru trac but Auburn supposed to be good like a equivilent to the tru trac just consists of clutches instead of gears

 

i really need to pay better attention to what im reading.... my bad. its seems from all sources that the truetrac is the way to go since the auburn didn't work out for me. Not sure really why the auburn failed 2 times, but after my mechanic reaplces this diff, im definately taking it elsewhere to have it re-checked, along with all the other stuff he mentioned.