Allison lockup


New Member
I am new to your forum and would like some help. I have a 2001 Vision by Rexhall With the 260hp ISB cummins and the allison 1000 trans. Installed power chip on engine and the trans at cruise will lock up coach, temp light for trans comes on. Need to pull over and shut off coach let sit for secs. and restart to drive any further. Any help would be greatly apprieciated.