Scheduled Maintenance Supplements; Scheduled Maintenance - GMC 2010 T-Series Owner's Manual

Scheduled Maintenance

Supplements
If the vehicle has an Allison Transmission
manual is supplemented by an Allison Transmission
Operator's Manual. Always refer to this manual for
related maintenance services.
Scheduled Maintenance
The services shown in this schedule up to 166 000 km
(100,000 miles) should be repeated after 166 000 km
(100,000 miles) at the same intervals for the life of
this vehicle. The services shown after 166 000 km
(100,000 miles) should be repeated at the same
km (miles) 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 10.
160 km (100 Miles)
1 Wheel stud nut service. (30)
1 600 km (1,000 Miles)
1 Wheel stud nut service. (30)
1 Rear axle air shift motor service. (9)
12 000 km (7,500 Miles)
1 Check fluid levels (or every 3 months, whichever
®
, the owner
1 Chassis lubrication service (or every 6 months,
®
1 Spring-to-axle U-bolts and shackle bolts
1 Wheels and tires service. (13)
1 Hydraulic brake service (or every 6 months,
1 Parking brake service (or every 6 months,
1 Air brake service (or every 6 months, whichever
1 Air brake automatic slack adjuster service (or every
1 Check air brake relay valve operation and check
1 Clean air brake application valve (or every
1 Air brake chamber service (or every 2 months,
occurs first). (1) (5)
whichever occurs first). (10)
service. (14)
whichever occurs first). (6) (30)
whichever occurs first). (7)
occurs first). (26)
500 hours, whichever occurs first). (27)
for leaks (or every month, or every 300 hours,
whichever occurs first).
3 months, or every 300 hours, whichever occurs
first). Lubricate linkage.
whichever occurs first). (28)
6-5