Check Engine Light On problems of the 2015 Chevrolet Silverado 1500

Catalytic converter failed with less than 80,000 miles. The truck was taken to dealership, denooyer Chevrolet, from which it had been bought new and by which it had always been serviced to remedy the check engine light prior to 80,000 miles with authorization to perform any diagnostic and remediation covered under warranty. Dealer did not make repair and advised it would cost me hundreds of dollars to even find out what was wrong. I now have taken the truck to a separate shop for diagnosis and was told a catalytic converter has gone bad. However, I am now slightly at 89,000 miles. Dealer is saying warranty on catalytic converts expired at 80,000 miles. Front brake rotors warped within the first year of ownership. A/c cooling coil cracked under 80,000 miles as well due to a faulty part, and apparently that warranty expired at 30,000 miles.

Was driving on freeway,was changing lanes so I stepped on the gas to switch lanes and then check engine started flashing and stabilitrak active light came on. Slowed down and felt the truck with some unusual shaking, when I got off the freeway and into the street as soon as I stopped it felt like the engine wanted to shut off but it did not,truck was shaking at every stop I made. Check engine light is still on and stabilitrak active light on.

Tl the contact owns a 2016 Chevrolet Silverado 1500. The contact stated while driving 45 mph, the vehicle start to shake abnormally when the accelerator pedal was depressed. The contact stated that the check engine warning light was illuminated. The vehicle was not taken to a local dealer or independent mechanic to be diagnosed. The contact repaired the vehicle himself by replacing the spark plugs and ignition coils however, the failure recurred. The manufacturer had been informed of the failure. The manufacturer stated that the vehicle was not under warranty. No further assistance was provided. The failure mileage was approximately 60,000.