06 Hummer H3 wont go into reverse or turn, transaxle maybe?

It drives fine straight but wont turn or go into reverse. The right wheel screeches likes its peeling out, it may be stuck.06 Hummer H3 wont go into reverse or turn, transaxle maybe?Well the H3 doesn't actually have a transaxle, that's usually on front wheel drive cars only, or rear engine vehicles. Your H3 has a locking front differential, check if it's locked (on your 4x4 control panel). If it's not on, you probably have a problem in there and need a mechanic to diagnose it. When the vehicle is turning, the outside wheel has to turn faster than the inside wheel, if your differential is locked this will not happen, hence the screeching sound. I can't imagine what can cause your reverse issue, doesn't seem that it should relate to a steering problem, but if the front differential locker is malfunctioning, that could cause your issue. Good luck!