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2008 GMC Sierra Repair Question


Topics covered: Engine, Smell.
Mileage: 60,000 miles.

Asked on November 18, 2012

GMC Sierra Engine Problem

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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Answer

Replied on November 18, 2012

Have codes read may provide a clue post codes will advise

Tiny Answered by Docfixit (expert)
18,416 answers provided