Chevrolet B7 2001 Owner's Manual page 177

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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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Air brake automatic slack adjuster service
(or every 500 hours, whichever occurs first). (40)
33,000 Miles (55 000 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)
36,000 Miles (60 000 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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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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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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Check air brake relay valve operation and check
for leaks (or every month, or every 300 hours,
whichever occurs first).
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Clean air brake application valve (or every 3 months,
or every 300 hours, whichever occurs first);
lubricate linkage.
39,000 Miles (65 000 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)
5-9