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Hard to start Please Help!

672 Views 11 Replies 6 Participants Last post by  bbc
I have a 2013 Tahoe that is throwing codes of P0172, 175 and check engine light. It has been tuned up, new throttle body, canister replaced, Map sensor O2 sensor, module by the gas tank programmed and changed and over a thousand dollars later, still the same problem! I am begging for help! Thank you.
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Do you think the injectors need replaced or can the be cleaned?
I would attempt cleaning with fuel additives first.
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