After 30 min driving, truck jerks loud n hard when I drive after stop. Why? on 1999 Chevrolet 1500 Pickup

Once it warms up and a lot of stop and go, it jerks like it's tearing apart when I go again. I have to gauge traffic lights so that I don't have to stop.

Asked by for the 1999 Chevrolet 1500 Pickup
Have it checked by a transmission shop sounds like a transmission problem.