Scheduled Maintenance - GMC 2005 T-Series Owner's Manual

Scheduled Maintenance

The services shown in this schedule up to
100,000 miles (166 000 km) should be repeated after
100,000 miles (166 000 km) at the same intervals for the
life of this vehicle. The services shown after
100,000 miles (166 000 km) should be repeated at the
same miles (km) after those intervals for the life of
this vehicle.
The "Footnotes" at the end of this Maintenance
Schedule further explain maintenance services.
See Service Publications Ordering Information on
page 7-7.
100 Miles (160 km)
Wheel stud nut service. (30)
1,000 Miles (1 600 km)
Wheel stud nut service. (30)
Rear axle air shift motor service. (9)
7,500 Miles (12 000 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)
12,000 Miles (20 000 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 600 hours of engine operation,
whichever occurs first). If engine oil and filter are
changed, reset system. See Engine Oil Life System
on page 5-18. (2) (8)
6-5