Foot0069
Member
You asked about RPO codes. The sticker in the glove box? Here ya go.
www.crankshaftcoalition.com
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Can you check for codes? O2 sensors on these trucks get torched after many miles in service. Mine would always throw a code when i went on trips with large elevation changes.SES light on again. Posted about it once before, but can't find that post right now. Runs and drives fine though.