THE VEHICLE WILL HARD SHIFT RANDOMLY. THE ENGINE LIGHT COMES ON SOMETIMES AND THE ENGINE LOSSES SPEED AND POWER WHILE DRIVEING DOWN THE HIGHWAY. I CAN SOMETIMES CUT THE VEHICLE OFF AND MAKE IT HOME SAFELY OTHER TIMES IT WILL NOT LET ME DRIVE THE VEHICLE AT ALL. WE HAVE TAKEN TO DEALER AND THEY SAY THEY CANT DIAGNOSE IF LIGHT ISNT ON. MOST OF THE TIME WHEN THE LIGHT IS ON I CANT MAKE IT TO THE DEALER BECAUSE THE VEHICLE WILL NOT DRIVE. IT HAS BEEN CONFIRMED BY THE SCANNER FROMA INDEPENDENT SERVICE CENTER.