HIGH SPEED MIS ENGINE LIGHT FLASHING CHANGED S ...

2008 GMC Sierra

Tiny

Anonymous

November, 18, 2012 AT 9:37 PM

High speed mis, engine light flashing, changed s plugs. What next?
also smells like cat converter overheating when I shut off, no red glow, but a high speed mis, usually on the highway

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1 Answer

Tiny

Docfixit

November, 18, 2012 AT 9:45 PM

Have codes read may provide a clue post codes will advise

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