Chevrolet T-Series Owner's Manual page 276

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)
60,000 Miles (96 000 km)
Vehicles Without 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 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)
Inspect engine air cleaner filter change
indicator. If necessary, replace the filter.
If vehicle is driven in dusty/dirty conditions,
inspect filter change indicator at every engine
oil change. See Engine Air Cleaner/Filter
on page 192 for more information.
Check fluid levels (or every 3 months,
whichever occurs first). (1) (5)
276
Replace fuel filter (or every 750 hours of
engine operation, whichever occurs first).
Chassis lubrication service (or every 6 months,
whichever occurs first). (10)
Inspect door hinge pins and bushings and
replace as necessary.
Steering system service. (11)
Front and rear suspension service. (12)
Spring-to-axle U-bolts and shackle bolts
service. (14)
Exhaust system service (or every 6 months,
whichever occurs first). (2) (3) (15)
Wheel bearing (grease type) service (and
whenever hubs are removed). (19) (30)
Wheels and tires service. (13)
Hydraulic brake service (or every 6 months,
whichever occurs first). (6) (30)
Parking brake service (or every 6 months,
whichever occurs first). (7)
Air brake service (or every 6 months, whichever
occurs first). (26)
Air brake automatic slack adjuster service (or
every 500 hours, whichever occurs first). (27)