I was attempting to brake while in moderately heavy freeway traffic at 60 MPH. The car began slowing and then suddenly accelerated rapidly. I managed to shift into neutral, while furiously stomping on the brakes, and stopped just inches behind the vehicle standing in front of me. The Trailblazer is working fine now, no re-occurrences, yet, but I'm worried about the "next time ". Is this a recall issue? I need this fixed ASAP. What's my best move? Take it to my trusted mechanic and hope he can fix it? Ask GM about this? Thanks for your help.