Buick 2016 Verano Owner's Manual page 311

310 Service and Maintenance
Maintenance Schedule
Additional Required
Services - Severe
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)
Change automatic transmission fluid.
Change manual transmission fluid.
2.4L Engine: Replace spark plugs. Inspect spark
plug wires.
2.0L Turbo Engine: 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 - Severe
(1) Or every two years, whichever
comes first. More frequent
passenger compartment air filter
replacement may be needed if
driving in areas with heavy traffic,
poor air quality, high dust levels,
or environmental allergens.
Passenger compartment air filter
replacement may also be needed if
there is reduced airflow, window
fogging, or odors. Your GM dealer
can help determine when to replace
the filter.
(2) Check all fuel and vapor lines
and hoses for proper hook-up,
routing, and condition.