GMC terrain jerks while sitting in drive.

Hello, jerking could be due to an engine performance issue, or could be due to a transmission engagement issue. It's impossible to know from where I sit, because I can't experience what the vehicle is doing. As a result, I'd suggest having a local technician near you have a look with you. Show the concern and it will be easy to determine which direction testing needs to go in. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops