Awasome 2014 Silverado Flashing Check Engine Light Ideas. While in motion (40 mph) vehicle will start vibrating and check engine light comes on. It was reconnected 3 times.

The first step to fixing a flashing check engine light is to diagnose the cause of the problem. If i shut it off and turn it back on there's no light and it drives fine. This blinking light usually reveals a severe engine misfire allowing unburned fuel to be dumped into the exhaust system.