Service Engine Light On problems of the 2015 Chevrolet Impala

While driving my car suddenly the information area on the dash board said "service stabil a track " "service traction control" and "power to engine reduced" then the service engine light came on. When I took it to the dealership the service rep told me that I would need to replace the high pressure fuel pump and the fuel feed pipe. He asked if I was using e85. I told him I was and he told me that e85 causes that damages in the Chevrolet vehicles and is why he won't use it in his own vehicle. The owner's manual encourages useing e85. Gm will not pay to repair this even though I followed their owner's manual.