GM releases fix for harsh shifts in Chevy Trax and Buick Envista crossovers. Dealers are to replace TEHCM and valve body in 6T40 transmissions.
The 2019 Cadillac CT6 and 2020 Cadillac CT6 have been included in a bulletin from GM granting extended special coverage for a transmission valve defect that can cause wheel lock-up and possible ...