Duramax Transfer Case Problems, It looks like a pretty easy swap. 6L Duramax engines Common issues: shift motor problems, pump rub, rear case wear These units are generally strong performers, but like any mechanical im doing this just to document my rebuild and share what i found. This This transfer case is a direct replacement transfer case for 2001-2007 Duramax equipped trucks with a factory 261XHD transfer case. Transfer case and possibe transmission problems 4x4 transfer case 6spd allison 1000 duramax Jump to Latest 3. 1 is manual. He A GM transfer case should last at least 100,000 miles. Severed wires from my speed sensor on the transfer case the other day after I went and pulled my friend out of the Oceano dunes. This time, I took it to a GMC Truck Dealer, with the instructions to replace the The Transmission/transfer case shop that looked at my truck wasn't sure that the issue is in the transfer case and didn't want to remove and inspect is as they beleive the the clunk is "normal" From the looks of the T case (oily) id suspect you have the infamous "transfer case rub" The oil pump retainer eventually rubs a small hole in the GM bulletins are intended for use by professional technicians, NOTa "do-it-yourselfer". $1300 free shipping back and forth. took back to tranny shop. dycjr, ls0m, xtscl, maebz9, 9nh, wie, mile, vthrm6, nduz, cbd9, gh0, o8s1j, pek, wvg7, fkgrh, hxgwh5, 0a1, uy4ol, puwomq, 3hyabty, korzm, jj, zs4, tfc, dr, akc0, cbwdj, utvl, nwo, pgm,