NHTSA Complaint #11428819 — 2021 CHEVROLET COLORADO

I purchased a brand new Colorado earlier this year. The vehicle currently has about 9,000 miles on the odometer. On two recent occasions within 1 1/2 weeks of each other while driving at highway speeds, there was a clunk noise and the transmission acted as if it had been shifted into neutral. The truck would not accelerate, and the RPMs were very high as I was pushing the accelerator and the vehicle was not responding but the engine was revving. This was an extremely scary and unsafe situation as cars were behind me and I narrowly avoided being hit as I tried to get over to the side of the road without any ability to accelerate. The first time it happened, after placing the vehicle in park and waiting a few minutes, I was able to get it back into gear and I drove straight to the dealer. The dealer "was unable to replicate the problem" and told me it was probably just a one-time "glitch." Approximately 1 1/2 weeks later, it happened again. I took it back to the dealer. The dealer stated that the computer showed error codes P0700 and P2817, both of which are faulty transmission codes. The dealer stated that the technician cleared the codes, drove the vehicle, and was once again "unable to replicate the problem." The dealer stated that it was going to request assistance from Chevy's engineers because it could not figure out what was wrong with the vehicle. I don't believe the vehicle is safe to drive at this point, as I narrowly avoided being in an accident on two occasions within 1 1/2 weeks of each other due to the failure of the vehicle's transmission to work appropriately.