2010 Cadillac DTS Owner's Manual - Page 435

Once a Year • Starter switch check. See Owner Checks and Services on page 7-6. • Parking brake and automatic transmission P (Park) mechanism check. See Owner Checks and Services on page 7-6. First Engine Oil Change After Every 40 000 km/25,000 Miles • Fuel system inspection for damage or leaks. • Passenger compartment air filter replacement (or every 12 months, whichever occurs first). More frequent replacement may be required if vehicle is driven regularly under dusty conditions. • Automatic transmission shiftlock control system check. See Owner Checks and Services on page 7-6. • Ignition transmission lock check. See Owner Checks and Services on page 7-6. First Engine Oil Change After Every 80 000 km/50,000 Miles • Engine air cleaner filter replacement. See Engine Air Cleaner/Filter on page 6-17. • Engine cooling system and pressure cap pressure check. Radiator and air conditioning condenser outside cleaning. See Cooling System on page 6-22. • Automatic transmission fluid and filter change (severe service) for vehicles mainly driven in heavy city traffic in hot weather, in hilly or mountainous terrain, when frequently towing a trailer, or used for taxi, police, or delivery service. See Automatic Transmission Fluid on page 6-19. • Exhaust system and nearby heat shields inspection for loose or damaged components. • Accelerator pedal check for damage, high effort, or binding. Replace if needed. 7-5