1999 Hyundai Elantra Overdrive Problem 1999 Hyundai Elantra Wagon Overdrive Problem?

1999 Hyundai Elantra Wagon Overdrive Problem? - 1999 hyundai elantra overdrive problem

I have a 1999 Hyundai Elantra 57.000 miles, the car shifts perfectly, except when using the overdrive slips into overdrive full. Any solution?