NHTSA Complaint #11584270 — 2015 GMC SIERRA 1500

My son's 2015 GMC Sierra side impact air bags went off while he was driving. He had no impact. He thought he hit a small pot hole but after driving back on the road, it was recently paved so it was not a pot hole. He guessed it was the edge of the road from the recent paving that he hit. He heard a loud noise like a gun shot. His cabin filled up with smoke and the side impact air bags when off. When he took the truck to the GM Dealership, it gave a code for front air bag deployment due to impact. But the side air bags went off and there was no impact. The only damage to the truck is the deployed side airbags and the locked seatbelts. He has a warranty but they kicked it to GM. Warranty stated that if they fixed it, they were worried that it would happen again. We filed a claim with GM. After GM sent three different inspectors out and over 5 weeks later, they denied the claim. They have also not sent the inspection reports as requested. My son did not have this truck for the first three months he owned it because GM could not find the faulty code causing transmission issues. I am worried the air bags deployment will happen again while he is driving at a high speed and cause a serious wreck.