
In dfc739's accumulator post (linked) there is a shot of the first accumulator piston and spring. I don't need to repeat everything in the posts below, but here's a couple of notes.ġ) If you do this, put everything back exactly the way you found it unless the instruction sheet tells you otherwise. And use Dexron VI on the older transmissions that came with Dexron III.

Adjust your driving to accommodate the conditions. I think the secret is preventing gear hunting on hills and in the wind. Not only were the plastic accumulator pistons in perfect condition, the separator plate looked great also with no signs of check ball damage. With all the miles on mine, I was expecting clear evidence of wear and tear. However, based on the condition of my valve body and separator plate, I'm not convinced that we need them. I did put one on a few months ago because I'm now towing a larger, heavier trailer than I used to.

Now many people swear by the notion of having an axillary transmission cooler. This was not a physically hard job, just tedious and time consuming. The threads below were a big help, as are the BoxWrench videos on YouTube. This is just to share how my upgrades went and some lessons learned.
4L60E SHIFT KIT PLATE HOW TO
This is not a how to post, see the links below for excellent detail on how to do this. Read on for more detail of my experience. This was fun to do and a great learning experience. All in all, it was well worth the effort! I highly recommend doing this if you are mechanically inclined and hate the sloppy performance of the 4L60E. However, being that I have 150k on it and tow a travel trailer, I decided to do the upgrades anyway because I want to get as much out of this truck as I can. One of the suggestions was that it might be a worn separator plate.

No more “hanging” between shifts! The short story to this is that a couple of months ago I noticed that it was hunting between 3 & 4 much more than it normally should, especially when the trans was cold. Its almost like driving a different truck. I finally was able to install my Transgo shift kit, separator plate, and replacement accumulator pistons.
