I have a 1996 Jeep Cherokee with 60K miles on it, it has the
six-cylinder 4.0 liter engine.  When it is warmed up, the automatic
transmission sometimes hesitates slightly before shifting into gear
when I move the lever.  It doesn't seem to be slipping at all, and it
works fine while driving.  Just a brief lag and then a clunk as it
goes into gear.  Does this indicate anything serious?

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Clarification of Question by jeff023-ga on 21 Feb 2006 16:43 PST

As I should have mentined before, I had the transmission fluid changed
when I bought the car (last August, about 6K miles ago).  It does the
hesitation and then slightly clunky shift intermittently, so given the
comments so far, maybe I should just keep an eye on it and see if it
worsens.  I also appreciate the idea of getting two diagnostic
transmission tests, rhater than just from one shop.

If you haven't already, check your fluid level. With the mileage I
would doubt the clutches are bad, but a low fluid level would speed
their deterioration. Have you towed with the vehicle? This creates
heat that can speed up deterioration as well.

Most likely, you are due for a transmission service that will include
replacing all fluids and the filter.  Should only run you between $60
and $100.  Mopar recommends this service every 30K miles.

Steve

A clunk could be the u-joint going bad. Go to drive and reverse a few
times if it clunks a lot do a visual of the u-joints(shaped like an x
about 3" long on both lines that connects axles to tranny/tranfer case
or axle to differentials). I would have the transmision serviced IF
the fluid has good color.
  There may be a couple of places that will give a free or low cost
diagnostic/estimate. I would get at least 2 to keep them honest.

Thanks all for the comments.  The transmission fluid was changed when
I bought the car in August of '05 at 54k miles.  I'll keep an eye on
the rest of the stuff you all mention, including the u-joint.  Much
appreciated!