I had my 2000 Buick Le Sabre up on blocks and in drive. Only the left wheel had any power behind it. The right wheel was stopped or barely moving until I hit the gas and then it would spin. But I could stop the wheel with my hands even with the gas held down. The traction control and anti-lock is not working but i believe that is being caused by a faulty bearing sensor. (the reason i had it up on blocks in the first place) The car makes a constant thumping noise when being driven. I thought that was caused by the bearing going bad, but now I'm not so sure.