Pontiac 1999 Firebird Owner's Manual page 337

Scheduled Maintenance
97,500 Miles (162 500 km)
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Check Oil Life Monitor. If engine oil and filter are changed, reset monitor.
See "Engine Oil" in the Index.
An Emission Control Service. (See footnote *.)
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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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If you haven't used your vehicle under severe service conditions listed
previously and, therefore, haven't changed your automatic transmission fluid,
change both the fluid and filter. Manual transmission fluid doesn't
require change.
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DATE
ACTUAL
SERVICED BY:
MILEAGE
DATE
ACTUAL
SERVICED BY:
MILEAGE
7-15