Discussion in 'General Chevy & GM Tech Questions' started by duffy, Jan 14, 2012.
What is the best way to fix a lean mixture in bank 2?
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.
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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