Chevrolet 2015 Impala Owner's Manual page 360

Maintenance Schedule
Additional Required
Services - Normal
Rotate tires and perform Required Services.
Check engine oil level and oil life percentage.
Change engine oil and filter, if needed.
Replace passenger compartment air filter. (1)
Inspect evaporative control system. (2)
Replace engine air cleaner filter. (3)
Replace spark plugs. Inspect spark plug wires.
Drain and fill engine cooling system. (4)
Visually inspect accessory drive belts. (5)
Replace brake fluid. (6)
Footnotes Maintenance
Schedule Additional Required
Services - Normal
(1) Or every two years, whichever
comes first. More frequent
replacement may be needed if the
vehicle is driven in areas with heavy
traffic, areas with poor air quality,
or areas with high dust levels.
Replacement may also be needed if
there is a reduction in air flow,
excessive window fogging, or odors.
(2) Check all fuel and vapor lines
and hoses for proper hook-up,
routing, and condition.
(3) Or every four years, whichever
comes first.
Service and Maintenance
If driving in dusty conditions, inspect
the air filter at each engine oil
change.
(4) Or every five years, whichever
comes first. See Cooling System on
page 10-14.
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