am about to buy a gtz for a very cheap price becouse of this. the guy thinks its the tranny but i dont think it is, let me tell u whats going on. the guy one day arrived from work ok, next day he turned the car on all lights lit up in the cluster, car wanted to die but didnt, then he put on reverse and the tranny made a sound. car still drives put slips on gear still drives. imo i dont think its the tranny , i think it has to be something electrical. am getting the car scanned see what codes come up tomorrow, but would like to know what u guys think.