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97 Sierra Running rich

Khathe
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Khathe New Member

Khathe

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Bought the truck at 228k+ miles. As far as I know, everything is still stock. Had a engine running rich code pop up, and am uncertain as to what it might be. Thinking 02 sensors are just bad as they probably haven't been changed. Code will also come on then go off. No change in ride. New to website, if I posted incorrectly my apologies

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