GMC C series 2002 Owner's Manual page 288

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Spring to axle U bolts and shackle
bolts service. (16)
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Exhaust system service (or every 6 months,
whichever occurs first). (3)(4)(17)
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Air brake service (or every 6 months, whichever
occurs first). (39)
18,000 Miles (30 000 km)
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Check Oil Life Monitor. If engine oil and filter
are changed, reset monitor. See "Engine Oil" in
the Index. (3)(9)
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Check fluid levels (or every 3 months, whichever
occurs first). (1)(2)(6)
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Chassis lubrication service (or every 6 months,
whichever occurs first). (12)
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Inspect door hinge pins and bushings and replace as
necessary. Lubricate door hinge pins and rollers with
engine oil.
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Wheels and tires service. (15)(46)
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Hydraulic brake service (or every 6 months,
whichever occurs first). (7)
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Hydraulic brake caliper service (or every 6 months,
whichever occurs first). (22)
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Hydraulic parking brake service (or every 6 months,
whichever occurs first). (8)
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Clutch pedal free travel service. (10)
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Clean air brake application valve (or every 3 months,
or every 300 hours, whichever occurs first);
lubricate linkage.
21,000 Miles (35 000 km)
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Check Oil Life Monitor. If engine oil and filter
are changed, reset monitor. See "Engine Oil" in
the Index. (3)(9)
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Check fluid levels (or every 3 months, whichever
occurs first). (1)(2)(6)
24,000 Miles (40 000 km)
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Check Oil Life Monitor. If engine oil and filter
are changed, reset monitor. See "Engine Oil" in
the Index. (3)(9)
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Check fluid levels (or every 3 months, whichever
occurs first). (1)(2)(6)
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Chassis lubrication service (or every 6 months,
whichever occurs first). (12)
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Lubricate door hinge pins and rollers with engine oil.
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Wheel bearing (grease type) service (or every
24 months, whichever occurs first, and whenever
hubs are removed). (23)
(Continued)
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