Why does My check engine light flashing?

Asked by Jon Jul 19, 2021 at 12:00 PM about the 2002 Chevrolet Tahoe LT 4WD

Question type: Maintenance & Repair

My Tahoe light
starts blinking
when I go over
30mph; my oil
gauge fluctuates
when idling

2 Answers
155,195

james answered 2 years ago

A flashing check engine light is warning you that the engine is misfiring and damaging the catalytic converter! Most likely a tune up will fix that. The oil gauge fluctuating at idle probably means you're low on oil, dangerously low! So check your oil level right away!! Hope that helps! Jim

Mark helpful
620

GuruPD8FJ answered 11 months ago

The check engine light comes on when you need to check the engine. It’s self explanatory well to most people anyway.

Mark helpful

Your Answer:

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