2000 hyundai elantra tranny slips from overdrive to third on highway. What could it be?

Transmission was rebuilt 2 years ago. Fluid is full. or:Transmission was rebuilt 2 years ago. Fluid is full.or:Are you hauling heavy loads? An automat

Transmission was rebuilt 2 years ago. Fluid is full.

or:Transmission was rebuilt 2 years ago. Fluid is full.


or:Are you hauling heavy loads? An automatic transmission could shift out of overdrive if a heavier load is detected and a higher RPM is required to pull it. If that's not it then consider having an expert take a look at it.

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