-change oil
-change tranny fluid
-check idle speed
-check ignition timing
-valve adjustment
-replace plugs
-replace distributer cap and rotor
-replace plug wires, if worn
-rotate tires
-top off fluids
-lube chassis(not really sure what that is, but most places list it as one of the things they do for a tune-up :P)

that's all i can think f at the moment