Cadillac 2009 STS, Owner'S Manual

Page: 467 / 514

When the CHANGE ENGINE OIL SOON message
appears, the following services, checks, and inspections
are required:
❑
Change engine oil and filter. See Engine Oil on
page 5-18. Reset oil life system. See Engine Oil Life
System on page 5-21. An Emission Control Service.
❑
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 5-23.
See footnote (m).
❑
Check tires for inflation pressures and wear. See Tires
on page 5-54. If tire rotation is recommended for the
vehicle, rotate tires. See Tire Inspection and Rotation
on page 5-71 and “Tire Wear Inspection” in At Least
Once a Month on page 6-11.
❑
Inspect brake system. See footnote (a).
❑
Check engine coolant and windshield washer fluid
levels. If the vehicle has the 4.4L V8 supercharged
engine, check intercooler fluid level. Add fluid as
needed.
❑
Perform any needed additional services. See
“Additional Required Services” in this section.
❑
Inspect suspension and steering components.
See footnote (b).
❑
Inspect engine cooling system. See footnote (c).
❑
Inspect wiper blades. See footnote (d).
❑
Inspect restraint system components.
See footnote (e).
❑
Lubricate body components. See footnote (f).
6-5