03 Tahoe fault code P0174

Discussion in 'General Chevy & GM Tech Questions' started by duffy, Jan 14, 2012.

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  1. duffy

    duffy New Member

    What is the best way to fix a lean mixture in bank 2?
  2. dipstick

    dipstick New Member 100 Posts

    First thing clean the maf sensor.. if you have a oil type filter will mess maf up.
    Somewhere your getting more air than fuel. Check all down steam of maf is tight.
  3. sstoner911

    sstoner911 New Member 1000 Posts 100 Posts

    X2......the only other thing would be a vacuum leak downstream from the MAF. Be sure you get MAF cleaner....most auto part stores carry it.

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