first post to this board hope someone has had similar problem and a solution. i have a new 2015 gmc sierra 6.2 denali with 9000 miles that at red light shakes seat console at a stop in gear its intermittent but gets worse longer day goes. I can bump into neutral it goes away in park goes away in drive shakes at a stop. Took to dealer put washers in both mounts did nothing to solve issue.Took back said they re programmed the torque converter not sure about that one , it did nothing to fix problem. Any ideas? Should i push for new trans and torque converter? thanks john frustrated owner