2004 Cadillac CTS Owner's Manual - Page 400

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. 25,000 (41 500 50,000 (83 000 75,000 (125 000 100,000 (166 000 125,000 (207 500 150,000 (240 000 Service 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 5-22. An Emission Control Service. Change automatic transmission fluid and filter (severe service only). See footnote (h). Replace spark plugs. An Emission Control Service. Engine cooling system service (or every 5 years, whichever occurs first). An Emission Control Service. See footnote (i). • • • • • 6-6