2004 KIA SPECTRA Power Train Problems

I WENT INTO KROGER'S AND PICKED UP A FEW ITEMS. WHEN I WAS DONE, I LEFT THE STORE AND GOT BACK INTO MY CAR TO FINISH RUNNING SOME ERRANDS. I STARTED MY KIA- SPECTRA AND SHE PURRED LIKE A KITTEN- AS USUAL. I PUT MY CAR IN REVERSE TO BACK OUT OF THE PARKING SPACE BUT MY KIA WOULD MOVE. I WAS PRESSING THE PEDDLE AND MY CAR DID NOT MOVE. I COULD HEAR THE CAR REVVING UP BUT I WASN'T MOVING. TO MAKE A LONG STORY SHORT- I HAD MY KIA TOWED TO THE DEALERSHIP FOR AN INSPECTION AND WAS TOLD THAT I NEEDED A NEW TRANSMISSION AND IT WOULD COST ME BETWEEN $2200-3600. I WAS DEVASTATED AND SHOCKED. MY KIA WAS WORKING JUST FINE. I NEVER HAD ANY INDICATORS THAT THE VEHICLE WAS HAVING PROBLEMS. NONE OF MY DASHBOARD INDICATOR LIGHTS FLASH OR LIGHT UP. MY CAR HAS...

THE CAR WILL SUDDENLY ACCELERATE WHILE DRIVING. IT WILL ALSO LUNGE WHEN SHIFTING INTO GEAR, FORWARD AND REVERSE. IT DOES NOT OCCUR EVERYTIME THE VEHICLE STARTS. WE BROUGHT IT TO THE DEALERSHIP TWICE FOR THIS PROBLEM. THE FIRST TIME THEY SAID THEY COULDN'T DUPLICATE THE PROBLEM. THE 2ND TIME THEY SAID THAT IT IS NORMAL FOR RPM'S TO GO UP WHEN THE ENGINE IS COOL. WHEN THE CAR LUNGES, THE BRAKES HAVE TO BE DEPRESSED AS HARD AS POSSIBLE TO STOP THE CAR. IT SOUNDS LIKE THE SAME PROBLEM THEY HAD WITH THE KIA AMANTI. *TR