Buick 2007 Terraza Owner's Manual page 510

Maintenance I — Use Maintenance I if the
CHANGE OIL SOON message comes on within
10 months since the vehicle was purchased
or Maintenance II was performed.
Change engine oil and filter. See Engine Oil on page 411. Reset oil life system.
See Engine Oil Life System on page 414. An Emission Control Service.
Lubricate chassis components. See footnote #.
Visually check for any leaks or damage. See footnote (k).
Inspect engine air cleaner filter. If necessary, replace filter. See Engine Air
Cleaner/Filter on page 416. See footnote (g).
Rotate tires and check inflation pressures and wear. See Tire Inspection and
Rotation on page 459 and "Tire Wear Inspection" in At Least Once a Month on
page 515.
Inspect brake system. See footnote (a).
Check engine coolant and windshield washer fluid levels and add fluid as
needed.
510
Maintenance II — Use Maintenance II if the
previous service performed was Maintenance I.
Always use Maintenance II whenever the message
comes on 10 months or more since the last
service or if the message has not come on at all
for one year.
Scheduled Maintenance
Service Maintenance I Maintenance II