2015 Jeep Wrangler cruise control problems

Stopped at stop light. Car stationary. Out of nowhere engine accelerates on it's own and runs into an 18 wheeler truck that is passing through in intersection. I tried to stop forward thrust by putting both feet on brake, taking out of gear which wouldn't budge, then pulling up on hand brake. After hitting back trailer wheel of truck and jeep raising back end off ground from impact acceleration stopped and engine idled.sudden unintended acceleration. Manufacturer defect.

Immediately after completing work from the air bag recall my vehicle began to accelerate on its own. I would hold a steady throttle and it would all of a sudden speed up. It would last for a few to several seconds and slow down to a point less than the steady throttle. When I would use cruise control the vehicle would vary in speed by five to seven miles per hour. This was definitely a change from the way it operated prior to the recall. I used injector cleaner through several tanks, but the problem persisted.