Chevrolet T-Series Owner's Manual page 281

Clean air brake application valve (or every
3 months, or every 300 hours, whichever occurs
first). Lubricate linkage.
Air brake chamber service (or every 2 months,
whichever occurs first). (28)
Air brake system valve service (or every
3 months, or every 900 hours, whichever
occurs first). (31)
Thermostatically controlled engine cooling
fan service. (3) (17)
Shields and underhood insulation
service. (3) (4) (18)
Rear axle air shift motor service. (9)
Air intake system service (or every 24 months,
whichever occurs first). (3) (4) (20)
96,000 Miles (152 000 km)
Vehicles Without Engine Oil Life System Only:
Change engine oil and filter (or every 12 months,
or every 600 hours of engine operation,
whichever occurs first). (2)
Vehicles With Engine Oil Life System Only:
Check oil life system (or every 12 months, or
every 600 hours of engine operation, whichever
occurs first). If engine oil and filter are changed,
reset system. See Engine Oil Life System
on page 190. (2) (8)
Lubricate U-joints (or every 6 months, whichever
occurs first).
97,500 Miles (156 000 km)
Check fluid levels (or every 3 months,
whichever occurs first). (1) (5)
Chassis lubrication service (or every 6 months,
whichever occurs first). (10)
Wheels and tires service. (13)
100,000 Miles (160 000 km)
Inspect engine drive belt; replace as necessary.
Change power steering fluid (or every
36 months, whichever occurs first). (11)
Replace power steering reservoir filter element
(or every 24 months, whichever occurs first).
281