GMC 2010 T-Series, Owner'S Manual

Page: 252 / 294

1 Check fluid levels (or every 3 months, whichever
occurs first).
(1) (5)
1 Replace fuel filter (or every 750 hours of engine
operation, whichever occurs first).
1 Steering system service. (11)
1 Front and rear suspension service. (12)
1 Spring-to-axle U-bolts and shackle bolts
service.
(14)
1 Exhaust system service (or every 6 months,
whichever occurs first).
(2) (3) (15)
1 Wheels and tires service. (13)
1 Hydraulic brake service (or every 6 months,
whichever occurs first).
(6) (30)
1 Parking brake service (or every 6 months,
whichever occurs first).
(7)
1 Air brake service (or every 6 months, whichever
occurs first).
(26)
1 Air brake automatic slack adjuster service (or every
500 hours, whichever occurs first).
(27)
1 Check air brake relay valve operation and check
for leaks (or every month, or every 300 hours,
whichever occurs first).
1 Clean air brake application valve (or every
3 months, or every 300 hours, whichever occurs
first). Lubricate linkage.
1 Air brake chamber service (or every 2 months,
whichever occurs first).
(28)
1 Air compressor dry element pleated paper air
strainer service (or every 2 months, or every
800 hours, whichever occurs first).
1 Fuel tank, fuel cap, and fuel lines service (or every
72 months, whichever occurs first).
(2) (21) †
1 Thermostatically controlled engine cooling fan
service.
(3) (17)
1 Shields and underhood insulation
service.
(3) (4) (18)
132 000 km (82,500 Miles)
1 Check fluid levels (or every 3 months, whichever
occurs first).
(1) (5)
1 Chassis lubrication service (or every 6 months,
whichever occurs first).
(10)
1 Wheels and tires service. (13)
1 Hydraulic brake service (or every 6 months,
whichever occurs first).
(6) (30)
1 Parking brake service (or every 6 months,
whichever occurs first).
(7)
1 Air brake service (or every 6 months, whichever
occurs first).
(26)
1 Air brake automatic slack adjuster service (or every
500 hours, whichever occurs first).
(27)
6-14