Ok I got an 02 Z28. The check engine light came on 2 weeks ago I had the code pulled and its P0171 and P0174 bank 1 and 2 running lean. I changed the fuel filter but it didnt seem to be stoped up. Anybody got any ideas? Its got 95k miles on it.

 

Check your MAF wires (not wiring but wires across the MAF itself), they may need to be cleaned, especially if you have an oiled filter. Could also be O2 sensors on the outs... Could be a few other things too.

 

it could be a spark plug or your mas. you would idle low and loose power if its your mas.

 

I got it fixed it was a vaccuum hose