2003 Cadillac Seville Owner's Manual - Page 359

90,000 Miles (150 000 km) 0 Replace passenger compartment air filter. If you drive regularly under dusty conditions, the filter may require replacement more often. U Inspect throttle body bore and valve plates for deposits, open the throttle valve and inspect all surfaces. Clean as required. An Emission Control Service. (See footnote t.) 100,000 Miles (166 000 km) 0 Replace spark plugs. An Emission Control Service. U Change automatic transaxle fluid and filter if the P Replace engine air cleaner filter. An Emission Control Service. 0 Rotate tires. See Tire Inspection and Rotation on page 5-66 for proper rotation pattern and additional information. (See footnote +.) vehicle is mainly driven under one or more of these conditions: - In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as high performance operation. If you do not use your vehicle under any of these conditions, the fluid and filter do not require change until the message CHANGE TRANS FLUID appears on the Driver Information Center. 97,500 Miles (162 500 km) 0 Rotate tires. See Tire Inspection and Rotation on page 5-66 for proper rotation pattern and additional information. (See footnote +.) 150,000 Miles (240000 km) 0 Drain, flush and refill cooling system (or every 60 months since last service, whichever occurs first). See Engine Coolant on page 5-26 for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. An Emission Control Service. Cl inspect engine accessory drive belt. An Emission Control Service. 6-8