GMC C series 2002 Owner's Manual page 289

24,000 Miles (40 000 km) (Continued)
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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 parking brake service (or every 6 months,
whichever occurs first). (8)
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Engine drive belts service (or every 12 months,
whichever occurs first). (18)
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Clutch pedal free travel service. (10)
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Thermostatically controlled engine cooling
fan service. (4)(20)
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Shields and underhood insulation service. (4)(5)(21)
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Air intake system service (or every 24 months,
whichever occurs first). (4)(5)(24)
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Evaporative Control System service (if equipped)
(or every 24 months, whichever occurs first). (3)(26)
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Rear axle air shift motor service. (11)
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Check air brake relay valve operation and check for
leaks (or every month, or every 300 hours,
whichever occurs first).
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Air brake chamber service (or every 2 months,
whichever occurs first). (41)
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Trailer brake hand control valve service (or every 3
months, or 900 hours, whichever occurs first). (42)
7-8
27,000 Miles (45 000 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)
30,000 Miles (50 000 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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Replace fuel filter(s) (or every 12 months, whichever
[
occurs first). (3)
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Engine air cleaner filter replacement service
(or every 24 months, whichever occurs first). (3)(4)(27)
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Steering system service. (13)
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Front and rear suspension service. (14)
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Spring to axle U
bolts service. (16)
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Exhaust system service (or every 6 months,
whichever occurs first). (3)(4)(17)
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bolts and shackle