I brought my 02 Impala LS, 39700 miles, in today for a coolant flush. The
service advisor called later a recommended a trans flush as well. I
declined for now - wanted to ask you all first.
The owner's manual basically says that the fluid never needs changing (at
least not for a really long time, like 150K). When I mentioned that to him,
he said no, and that every 30-40K miles was recommended, and that the first
service should be a complete flush. After that, just dropping the pan and
doing the filter and replacing whatever fluid drains out is enough.
I've heard bad things about the flushing causing more trouble than it's
worth. What is really needed? The fluid on the stick looks and smells
fine, and I'm not experiencing any problems - I'm afraid of messing with
something that works.