Starting Issue

[2013 Tahoe Please]

I have a 2013 Tahoe that is throwing codes of P0172, 175 and check engine light. It has been tuned up, new throttle body, evap 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.

 

[Coolman1987us]

Do you have access to a tech 2? Sounds like a bad 02 or broken wire. A tech 2 could tell you whether the computer is seeing a valid signal or not. Seeing as you already changed the 02's i would look at the wiring.