I have a 2016 GMC 2500 HD and just did a 'tune up' on it. Tune-ups today consist of new spark plugs and wires ($175) and sometimes new coils ($145). I started my little project at about 1pm and by 5pm...
Never thought LS engines were terribly difficult to access spark plugs. But haven’t changed them in a newer pickup. But it’s a good reminder how much $ you can save by doing the simple stuff like a tune up, yourself.