I scanned my wifes 04 Tahoe tonight ( I didnt see a Tahoe forum so I figured this one is close enough)

Here were my codes:

1 - P0101 Mass or volume air flow circuit range/ performance

2 - P1071 System too lean ( bank 1 )

3 - P1074 System too lean ( bank 2 )

Any Ideas?

I cleaned the throttle body tonight and plan to change the fuel filter next. The codes are pending now but I feel the lean banks will stick and trigger the engine light again.