Cadillac CTS-V 2018 Owner's Manual page 337

336 SERVICE AND MAINTENANCE
Maintenance Schedule
Additional Required Services -
Normal
Rotate tires, if recommended for the vehicle, and
perform Required Services. Check engine oil level
and oil life percentage. Change engine oil and filter,
if needed. (1)
Replace passenger compartment air filter. (2)
Inspect evaporative control system. (3)
Replace engine air cleaner filter. (4)
Replace spark plugs. Inspect spark plug wires. (2.0L
LTG and 3.6L LF3 Turbo Engines)
Replace spark plugs. Inspect spark plug wires. (3.6L
LGX and 6.2L LT4 Engines)
Change rear axle fluid, if equipped with electronic
limited slip differential. (5)
Change rear axle fluid, without electronic limited slip
differential. (5)
Change transfer case fluid, if equipped with
AWD. (5)
Drain and fill engine cooling system. (6)
Visually inspect accessory drive belts. (7)
Replace brake fluid. (8)