Transfer case hole

[mykeztruk]

I have an 07Crew 3500 duramax/allison with the push button 4X4. I noticed a little spot on the drive and now it has grown bigger and bigger. I thought it was a seal or pan gasket on the transmission but after taking a closer look I noticed a hole about the size of a pencil lead worn thru the transfer case. The truck has 363000 on it but was wondering if anyone else has had this problem. I noticed on ebay that there is an aftermarket rear half for the t-case but not sure how bad the rest of the internals are. The past two half ton silverados i have owned had blue t-case fluid. Is the dually supposed to also? A new GM t-case is around 1700, but i want to be sure that is the only problem i have. Any input would be helpful.

[Indianjoe]

Go to Transfer case express and buy the rear half. Its the updated one that does not require the pump upgrade to take out the slack. I just got done replacing my rear casing on my 04 2500 4x4. The GM house wanted $300+ for a new rear casing plus you would still have to buy the update for the pump. I really feel sorry for the guys that are not mechanical inclined. I spent about $220 compared to 600+ for the gm to remove the casing +300+ for the casing + another 75+ for the up grade for the pump.

[ChevyBoy2009]

Exactly what he said!