My trans has been acting up it's been over heating and last week the check engine light came on after about a 2 hr drive the trans temp light came on and it went into limp mode I pulled over and let it cool then went to autozone and they pulled a code for low fluid pressure the trans fluid is clean and at the correct level so I got a trans cooler and installed it but the truck kept stalling when put in gear so I'm thinking that the check valve might have something to do with it but I can't seem to find it I know on the older gens is in the line but it doesn't look the same on my truck so before I got cutting up the lines for no reason I'd like to verify where it's at