I recently did this job. Mine was leaking coolant from the rubber gasket between the cooler and the block.
Not really hard to do but it's hard to tell what to unscrew to get it off. There are 4 bolts that go thru the cooler to the block. You must also disconnect the pipe from the back of the water pump (2 nuts). I also had to back one tranny to motor bolt out some so I get the cooler to clear it.
On the cooler 2 bolts on top and 2 bolts on bottom. One of them is a bit of a bitch to get to.
Edit -2 more nuts on the coolant to block elbow.
Last edited by Back-in-Black; 07-16-2013 at 10:59 PM..