2007 Cadillac STS Owner's Manual - Page 509

Additional Required Services (cont'd) Service and Miles (Kilometers) Throttle body service. An Emission Control Service. See footnotes † and (l). Replace spark plugs. An Emission Control Service. Engine cooling system service (or every five years, whichever occurs first). An Emission Control Service. See footnote (j). 4.4L Supercharged Engine: Intercooler system service (or every five years, whichever occurs first). See footnote (p). Inspect engine accessory drive belt. An Emission Control Service. See footnote (n). If using DOT-4 brake fluid, change brake fluid at a regular maintenance service every two years. See footnote (i). 25,000 (40 000) • 50,000 (80 000) • 75,000 (120 000) • 100,000 (160 000 125,000 (200 000) • 150,000 (240 000) • • • 509