Yes be they can be serviced. Basically you drain the old gear lube out and replace it. ALso, (please check your owner's manual for this) in some cases (colder conditions) the manufacturer will recommend a lighter fluid be used if it is hard to shift. I don't know where you live, but if that is the case, I would suggest it.
Here is a actual example. I purchased a 98 dakota (love them and have had them since 1990) with a standard trans. The trans would hardly shift for the first 10 miles. Actally, I had to bypass 3rd gear when this happened. It wouldn't shift into it. Got the truck dirt cheap because of a "trans problem", took it home, drained out what looked like mud, flushed it, replaced the gear lube with synthetic type, and the trans never gave me trouble again. Used it as a plow truck and my primary vehicle for 5 years and sold it for 3X the original cost. It ran great!
Sunday, October 18th, 2009 AT 3:31 PM