4l80e

Hey guys. I'm hoping a transmission guru can give me some good advice as to how best to proceed with an issue I'm having with a 4l80e. '96 GMC 1500 6.5TD/4l80e with ~240,000 miles is shifting hard at all loads. Only DTCs I've pulled are EGR related (I've known for a while that the EGR solenoids...