i got about 100k on my 2.4 in my 96' cav. i'm replacing the oil pump cover and was wondering if i should change the oil pump while i'm at it. it's like $100 at autozone and $200 from gm. for that price i though i'd check to see if it even needs replaced before i spend the $. i also noticed my balance shaft chain tensioner is warn in about 1/8'' from the chain and was wondering if it is normally groved or if i should replace it too? thanks

If your there You might as well, if you plan to keep the car for another 100K