Having trouble with automatic transmission. on 1996 Dodge Ram 2500

Doesn't always shift up. Sometimes hesitates and shifts hard into reverse. Seems to be more often than not when it is cold but not always the case. What might it be?

by in Peoria, AZ on August 28, 2011
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2 answers
ANSWER by , August 29, 2011
Has the check engine light been on , or is it on now? If so, I would start thee.
ANSWER by , August 28, 2011
It's likely t be an internal transmission problem but I would start by getting the oil hot, drain it drop the trans pan change the oil and filter using the correct Dodge fluid and add a product called Lubegaurd its quite a good additive. When the oil pan is off check for debris in the bottom of the oil pan.