What does a blinking engine light mean on 2003 Chevy 1500 HD?
A blinking check engine light on a 2003 Chevy 1500 HD typically indicates a severe engine misfire. This means that the engine is not functioning correctly and is in need of immediate attention. It's crucial to take your vehicle to a qualified mechanic or service center for proper diagnosis and repair. There are a few things that could cause a misfire, including faulty spark plugs or wires, a bad fuel injector, or a malfunctioning ignition coil. By addressing the issue promptly, you can help prevent further damage to your vehicle.