Check Engine Light
05 gmc denali chk engine light
flashing, engine loosing power,
vibrates ... all of a sudden, no
previous issues, maintenance on
track. Any guesses
Could be anything, you need to hook it up to a code checker to find out why the CEL came on. Vibration is always a bad thing for an engine, but with the info here it could be anything from ignition or fuelling issues to serious mechanical problems.
Yes, why guess?
Thanks Lars, had it towed so waiting for mechanic to open for business....hoping for the best
Check engine lights flash because there is a misfire. A misfire will quickly destroy your catalytic converter costing a lot of money to replace.
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