1999 CHEVROLET CORVETTE gas mileage

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Scheduled Maintenance
7-9
15,000 Miles (24 000 km)
Inspect air cleaner filter if you are driving in dusty conditions. Replace filter
if necessary.
An Emission Control Service. (See footnote
.)
30,000 Miles (48 000 km)
Replace air cleaner filter.
An Emission Control Service.
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket
for any damage. Replace parts as needed.
An Emission Control Service. (See footnote
.)
45,000 Miles (72 000 km)
Inspect air cleaner filter if you are driving in dusty conditions. Replace filter
if necessary.
An Emission Control Service. (See footnote
.)
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Scheduled Maintenance
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7-10
50,000 Miles (80 000 km)
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 90F
(32C) or higher.
± In hilly or mountainous terrain.
± Uses such as high performance operation.
If you do not use your vehicle under any of these conditions, change the fluid
and filter at 100,000 miles (166 000 km). Manual transmission fluid doesn't
require change.
60,000 Miles (96 000 km)
Replace air cleaner filter.
An Emission Control Service.
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket
for any damage. Replace parts as needed.
An Emission Control Service. (See footnote
.)
Inspect engine accessory drive belt.
An Emission Control Service.
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Scheduled Maintenance
7-11
75,000 Miles (120 000 km)
Inspect air cleaner filter if you are driving in dusty conditions. Replace filter
if necessary.
An Emission Control Service. (See footnote
.)
90,000 Miles (144 000 km)
Replace air cleaner filter.
An Emission Control Service.
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket
for any damage. Replace parts as needed.
An Emission Control Service. (See footnote
.)
100,000 Miles (160 000 km)
Replace spark plugs.
An Emission Control Service.
Inspect spark plug wires.
An Emission Control Service.
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