Scheduled Maintenance - Hummer 2008 H2 Owner's Manual

The proper replacement parts, fluids, and lubricants to
use are listed in Recommended Fluids and Lubricants
on page 6-12 and Maintenance Replacement Parts
on page 6-14. When your vehicle is serviced, make sure
these are used. All parts should be replaced and all
necessary repairs done before you or anyone else
drives the vehicle. We recommend the use of genuine
parts from your dealer/retailer.

Scheduled Maintenance

When the CHANGE ENGINE OIL message in the
Driver Information Center (DIC) comes on, it means
that service is required for your vehicle. See DIC
Warnings and Messages on page 3-56. Have your
vehicle serviced as soon as possible within the next
600 miles (1 000 km). It is possible that, if you are
driving under the best conditions, the engine oil life
system may not indicate that vehicle service is
necessary for over a year. However, your engine oil
and filter must be changed at least once a year and at
this time the system must be reset. Your dealer/retailer
has trained service technicians who will perform this
work using genuine parts and reset the system.
6-4
If the engine oil life system is ever reset accidentally,
you must service your vehicle within 3,000 miles
(5 000 km) since your last service. Remember to reset
the oil life system whenever the oil is changed. See
Engine Oil Life System on page 5-16 for information on
the Engine Oil Life System and resetting the system.
When the CHANGE ENGINE OIL message appears,
certain services, checks, and inspections are required.
Required services are described in the following for
"Maintenance I" and "Maintenance II." Generally, it is
recommended that your first service be Maintenance I,
your second service be Maintenance II, and that you
alternate Maintenance I and Maintenance II thereafter.
However, in some cases, Maintenance II may be
required more often.
Maintenance I — Use Maintenance I if the CHANGE
ENGINE OIL message comes on within 10 months since
the vehicle was purchased or Maintenance II was
performed.
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.