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4L80 SHIFT HARD WHEN HOT by CARL HICKS
Just bought 2500HD 2001 GMC from Texas..NICE TRUCK 133K flushed trans,changed filter.. trans shifts mint most of time.. will pull to redline... when I go 30-50 miles from home,AND THE IS HOT, the trans will bang shift from 1-2,then less hard 2-3,3-4 sometimes it doesnt do this..any one else see this?