GMC 2010 Sierra - Manual (Page 604)

When the Change Engine Oil Soon message displays,
certain services, checks, and inspections are required.
The services described for Maintenance I should be
performed at every engine oil change. The services
described for Maintenance II should be
performed when:
. Maintenance I was performed the last time the
engine oil was changed.
. It has been 10 months or more since the Change
Engine Oil Soon message has displayed or since
the last service.
Maintenance I
. Change engine oil and filter. See Engine Oil on
page 6‑17. An Emission Control Service.
. Engine coolant level check. See Engine Coolant
on page 6‑33.
. Windshield washer fluid level check. See
Windshield Washer Fluid on page 6‑43.
. Tire inflation check. See Inflation - Tire Pressure
on page 6‑80.
. Tire wear inspection. See Tire Inspection and
Rotation on page 6‑88.
. Rotate tires. See Tire Inspection and Rotation on
page 6‑88.
. Fluids visual leak check (or every 12 months,
whichever occurs first). A leak in any system must
be repaired and the fluid level checked.
. Engine air cleaner filter inspection (vehicles driven
in dusty conditions only). See Engine Air Cleaner/
Filter on page 6‑22.
. Brake system inspection (or every 12 months,
whichever occurs first).
. For vehicles with Allison Transmission ® only: At
the first engine oil change only, replace external
transmission filter.
Maintenance II
. Perform all services described in Maintenance I.
. Steering and suspension inspection. Visual
inspection for damaged, loose, or missing parts or
signs of wear.
. Lubricate the front suspension, steering linkage,
and parking brake cable guides. Control arm
ball joints on 2500/3500 series vehicles require
lubrication but should not be lubricated unless
their temperature is −12°C (10°F) or higher, or
they could be damaged. Control arm ball joints on
1500 series vehicles are maintenance‐free.
Vehicles used under severe commercial operating
conditions require lubrication on a regular basis
every 5 000 km/3,000 miles.
7-4