A few weeks ago my wife's Trailblazer transmission started acting funny. When you came to a stop, it would act like it went into nuetral, then as you accelerated it would rev up then slam into gear. As she was driving it to the dealer (warrantee), it lost all forward drive while on the freeway. Onstar said a tow truck would be there in an hour so she started it back up and tried it. It went into gear but would only shift from first to second and stay there. No third or fourth gear. She limped it home and the tow truck picked it up there. The dealer pulled out the transmission, said that the turbine housing bushing had failed. After waiting a more than a week for parts they put it back together with a new Torque converter, clutches, bearings, 1 band, and new seals. We picked it up and it does the same thing. Come to a stop it goes to nuetral. Accelerate and it slams into gear then operates normally until you stop again. We took it back. What is the probable cause? We only have 5000 miles left on the warrantee. Should we be concerned by their lack of ability to repair it correctly and maybe in 6000 miles we will be stuck having to pay for repairs?