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What if service engine light is blinking on a Chevy silverado?

A blinking check engine light on a Chevy Silverado (or any vehicle) is a serious warning indicating a potentially catastrophic engine problem that requires immediate attention. Do not continue driving. Driving with a blinking check engine light can cause significant damage to your engine, potentially leading to costly repairs or even a complete engine failure.

Here's what you should do:

* Stop driving immediately and safely. Pull over to the side of the road as soon as it's safe to do so.

* Turn off the engine. This helps prevent further damage.

* Have the vehicle towed. Do not attempt to drive it to a repair shop. The problem is likely severe and continuing to drive could worsen the situation.

* Contact a qualified mechanic or your dealership. They can diagnose the problem using an OBD-II scanner to read the trouble codes stored by the vehicle's computer. These codes will provide clues about the specific issue.

Possible causes of a blinking check engine light (which are much more serious than a steady light) include:

* Misfire: One or more cylinders aren't firing properly. This can be caused by a variety of issues, including faulty spark plugs, ignition coils, or fuel injectors. Severe misfires can damage the catalytic converter.

* Severe engine damage: Internal engine problems like a broken connecting rod or piston could be causing the light to blink.

* Problems with the catalytic converter: A damaged or failing catalytic converter can lead to a blinking light.

A steady check engine light usually indicates a less urgent issue. But a *blinking* light signifies an immediate and serious threat to your engine's health. Get it towed and diagnosed immediately.