2010 Cadillac CTS Owner's Manual - Page 424

10-6 . Service and Maintenance High pressure water can overcome the seals and contaminate the transfer case fluid. Contaminated fluid will decrease the life of the transfer case and should be replaced... CTS-V only: Rear axle fluid change (severe service only) for vehicles mainly driven in hilly or mountainous terrain, when frequently towing a trailer, used for high speed or competitive driving, or used for taxi, police, or delivery service. See Rear Axle on page 9‑30. Spark plug replacement. An Emission Control Service. CTS-V only: Supercharger drive belt inspection for fraying, excessive cracks, or obvious damage and replacement, if needed. . First Engine Oil Change After Every 160 000 km/100,000 Miles . . 6.2L supercharged V8 engine only: Intercooler system drain, flush, and refill, cooling system and cap pressure check, and cleaning of outside of radiator and air conditioning condenser (or every 5 years, whichever occurs first). See Cooling System on page 9‑18. An Emission Control Service. Engine accessory drive belt inspection for fraying, excessive cracks, or obvious damage and replacement, if needed. An Emission Control Service. Automatic transmission fluid change (normal service). See Automatic Transmission Fluid on page 9‑13. All-wheel-drive vehicles only: Transfer case fluid change (normal service). During any maintenance, if a power washer is used to clean mud and dirt from the underbody, care should be taken to not directly spray the transfer case output seals. . First Engine Oil Change After Every 240 000 km/150,000 Miles . Engine cooling system drain, flush, and refill, cooling system and cap pressure check, and cleaning of outside of radiator and air conditioning condenser (or every 5 years, whichever occurs first). See Cooling System on page 9‑18. An Emission Control Service.