7-5
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.
Gasoline engine vehicles have a computer that lets you
know when to change your engine oil. This is not based
on mileage, but on engine revolutions and engine
operating temperature. When the computer has
calculated that the oil needs changing, the GM Oil Life
System
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will indicate that a change is necessary.
The “Footnotes” at the end of this Maintenance
Schedule further explain maintenance services.
See “Scheduled Maintenance Supplements” earlier in
this section.
100 Miles (160 km)
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Wheel stud nut service. (46)
1,000 Miles (1 600 km)
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Wheel stud nut service. (46)
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Rear axle air shift motor service. (11)
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L18/LB7 Engines Only: Clutch pedal free
travel service. (10)
7,500 Miles (12 000 km)
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Gasoline Engine Only: Check Oil Life System.
If engine oil and filter are changed, reset system.
See “Engine Oil” in the Index. (3)(9)
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Check fluid levels (or every 3 months, whichever
occurs first). (1)(6)
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Chassis lubrication service (or every 6 months,
whichever occurs first). (12)
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Wheels and tires service. (15)
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Parking brake service (or every 6 months, whichever
occurs first). (8)
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L18/LB7 Engines Only: Clutch pedal free
travel service. (10)
10,000 Miles (16 000 km)
j
DURAMAX
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Diesel Only: Change engine oil
and filter (or every 12 months, whichever
occurs first). (2)(3)
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