If detected, the transmission will shift gears to prevent lock up and a service engine light and reduced propulsion message will display. GM will also provide a special program to cover the repair ...
according to GM. The new software will monitor the valve and detect excess wear 10,000 miles before the wheels lock up. If wear is detected, the transmission will be limited to fifth gear ...
In rare cases it can fail and lock up the rear wheels. Drivers may notice harsh shifting before any wheel problems. GM says in documents that dealers will install new transmission control software ...