2003 GMC Envoy Transmission Problem

The four-wheel drive bearing went out on the front end of my Envoy. My husband and a friend fixed it by taking out the four-wheel drive axle and took out the fuse that controls switching into four-wheel drive. Would this be causing a problem with shifting from 1st to 2nd and so on? It doesn't shift like it should when I take off. Could there be another problem that I need to have looked at?