GMC T-Series 2007, Owner'S Manual

Page: 305 / 356

❑
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)
❑
Check air brake relay valve operation and check
for leaks (or every month, or every 300 hours,
whichever occurs first).
❑
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 compressor dry element pleated paper air
strainer service (or every 2 months, or every
800 hours, whichever occurs first).
❑
Fuel tank, fuel cap, and fuel lines service
(or every 72 months, whichever occurs
first). (2) (21) †
❑
Thermostatically controlled engine cooling fan
service. (3) (17)
❑
Shields and underhood insulation
service. (3) (4) (18)
82,500 Miles (132 000 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)
❑
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)
❑
Check air brake relay valve operation and check
for leaks (or every month, or every 300 hours,
whichever occurs first).
❑
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)
305