Chevrolet 2000 Tahoe Owner's Manual page 380

Scheduled Maintenance
97,500 Miles (162 500 km)
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Check rear/front axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking.
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Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
100,000 Miles (166 000 km)
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Inspect spark plug wires.
An Emission Control Service.
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Replace spark plugs.
An Emission Control Service.
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Change automatic transmission fluid and filter if the vehicle is mainly driven
under one or more of these conditions:
– In heavy city traffic where the outside temperature regularly reaches
90 _ F (32 _ C) or higher.
– In hilly or mountainous terrain.
– When doing frequent trailer towing.
– Uses such as found in taxi, police or delivery service.
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