2004 trail blazer blinkung engine light

Asked by Robert Nov 10, 2020 at 03:20 PM about the 2004 Chevrolet Trailblazer LS 4WD

Question type: Maintenance & Repair

I replaced plugs an all coil packs my engine light
blinks at me

1 Answer
11,615

FJ4072 answered 4 years ago

Don't drive it with a blinking CEL. Have the code read to pinpoint what cylinder is misfiring. On the I6 engine, triple check the coils. Remove each one, and slowly reinsert, listen and feel for the click to assure they're on correctly. It's easy to mis-install these.

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