Chevrolet Silverado 4500HD 2022 Owner's Manual page 335

Service and Maintenance 333
Additional Required Services
Maintenance Schedule Additional
Required Services - Normal
Rotate tires and perform Required Services. Check engine oil
level and oil life percentage. Change engine oil and filter,
if needed.
Replace passenger compartment air filter. (1)
Replace engine air cleaner filter. (2)
Change transfer case fluid, if equipped with 4WD. (3)
Drain and fill engine cooling system. (4)
Replace brake fluid. (5)
Replace fuel filter. (6)
Re-torque front and rear axle U-bolt nuts. (7)
Change 4x2 front axle wheel bearing oil (including
synthetic). (8)
Change 4x4 front axle wheel bearing grease (including
synthetic). (8)
Change rear axle oil (vocational applications). (8)
Inspect rear axle wheel ends for leaks, lube level/condition,
and check end play with dial indicator. (8)
Change power steering fluid and filter.
Replace windshield wiper blades. (9)
Change front axle oil
Replace air conditioning desiccant. (10)
Visually inspect accessory drive belts. (11)