going to get a tune up what should i look to do i know spark plugs and wires should i change the opti even though its working pretty good?

 

only change the opti if its high milege, 50,000+ AND if the water pump is already getting replaced, otherwise it'll up your bill a good amount. For the tune-up, o2's, air and fuel filter, pcv valve, and maybe the icm

 

this is what my buddie thats a mechanic at chevy said to do on a tune up , replace the coil, wires and plat. plugs cap and rotor, and also seafoam the induction before you do the new plugs ,

 

ok thanks guys..