i need to swap my piston sleeve and the tool we got didn't come with the proper part to remove the sleeve...it's been hard to find but for any of you that work for gm or dealerships of gm, this is the part # we need:

tool kit number EN 45680-850
in side that kit is tool EN 45680-852.which is what we need

we have the tool kit, i just need the proper tool to pull out the sleeve, with the sleeve installer

thanks!