Download the 2014 Owners' Manual and look at the severe service schedule in it. At a minimum you'll want to change the brake/clutch fluid and the transmission fluid. For the transmission contact XtremeRevolution for AMSOil Synchromesh gear oil. You'll need 3 quarts. The GM fluid is about twice as expensive and not as good. I use the GM DOT3 brake fluid for the brake/clutch fluid.