2007 Cadillac STS Owner's Manual - Page 508

Additional Required Services The following services should be performed at the first maintenance service (I or II) after the indicated miles (kilometers) shown for each item. Additional Required Services Service and Miles (Kilometers) Inspect fuel system for damage or leaks. Inspect exhaust system for loose or damaged components. Replace engine air cleaner filter. See Engine Air Cleaner/Filter on page 386. 4.4L Supercharged Engine: Supercharger service. See footnote (o). Change automatic transmission fluid and filter (severe service). See footnote (h). Change automatic transmission fluid and filter (normal service). For all-wheel-drive vehicles used for trailer towing: Change transfer case fluid. • • 25,000 (40 000) • • 50,000 (80 000 75,000 (120 000) • • 100,000 (160 000 125,000 (200 000) • • 150,000 (240 000) • • 508