check engine light

[hunter01]

I am having issues with my 2002 Chevy Tahoe it is throwing a check engine light. I have an accutron code reader and it is telling me that my faults are right bank lean and left bank lean. I have replaced the fuel filter this did not help any. Any further suggestions would be greatly appreciated.

[GM-Tech]

Intake vacuum leak. Sometimes, just going around and retorquing all the intake bolts will show a noticeable improvement in fuel trims. If that happens, you know for sure it's an intake and the gaskets should be replaced. If there is no change after retorquing... it still could be an intake leak.