I have a 05 RWD GMC Sierra 1500 with the 4.3l V6 engine. It currently has a NV3500 5spd manual transmission but has a rough time going into 4th gear and its cheaper and easier just to swap out the trans.
I found a 5spd NV3500 that came out of a 98 s10 with 4x4, and i'm wondering if the conversion would work