I purchased my PCS off RockAuto. It's the Delphi SL 10021. It was $30 plus couple more for shipping. Came out cheaper then other sites, but not sure of the brand of the part is any good... But from my parts store background, brand means nothing to me anymore after we swapped some fuel pumps out of green boxes into Borg Warner boxes after we changed venders... :-/

BUT I just installed the transgo shift kit with a fluid and filter change.. No more code, trans shifts better, and the trans actually runs 15-20 degrees cooler. I use to get up to 232* pulling my mountain. Now the hottest I've seen was 212. Highway driving was 195ish before the shift kit, not 185 - 186.