I recently had my auxiliary transmission pump changed after getting errors when towing my travel trailer. Now after the replacement the truck will start shifting very erratically when driving highway speeds 60 -75. It goes from 1200 to 3500 rpm and back again sometimes in less then a few seconds lurching as it shifts gears. I brought it in to another dealer as we are snowbirds moving around a bit and told them the aux pump had been changed just before this happened and they updated the...
2021 Powerboost erratic shifting when highway towing
2021 Powerboost erratic shifting when highway towing