Footnotes — Maintenance Schedule Additional Required Services — Normal
a) Check all fuel and vapor lines and hoses for proper hook-up, routing, and condition. Check that the purge valve, if the vehicle has one, works properly. Replace as needed.
b) Or every four years, whichever comes first.
c) Or every five years, whichever comes first. See Cooling System .
d) Or every 10 years, whichever comes first. Inspect for fraying, excessive cracking, or damage; replace, if needed.

See also:
Quiet tuning
Buick Verano delivers the library-quiet driving experience for which Buicks
have become known. Quiet-tuning systems, processes and components are built into
every facet of the vehicle's architectu ...
At Least Once a Month
Tire Inflation Check
Visually inspect your vehicle’s tires and make
sure they are inflated to the correct pressures.
Do not forget to check the spare tire.
Tire Wear Inspection
Tire rotation ...
Checking Coolant
The vehicle must be on a level surface when checking the coolant level.
Check to see if coolant is visible in the coolant surge tank. If the coolant
inside the coolant surge tank is boiling, do not ...
