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P0171/4 sys too lean bank 1-2
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Question
2006crewcab
I have a 2006 silverado 1500 5.3 with 96000 miles. Last night i got codes p0171 and p0174. New to me so i came here for answers. Mods i have done are airaid jr cai, Airaid air filter, edge evo ht programmer, Magnaflow exhaust, and a JET mass air flow sensor. The 2 newest are the jet air flow sensor and the airaid air filter. Had the intake tube and programmer for about 2 years now. thanks in advance for any help.
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