GMC 2003 Sierra - Manual (Page 397)

How to Reset the GM Oil Life System
Press the iuB) intoiinatiQn butlon unbC ENGfWE OIL LIFE
apfwars in ihe display, The GM Oil Uie Eysiem shows
an estirnate af (he all's remaining useful IHe. 11 will show
100% when ihe system is reset after an olJ change. Il
will alert you to change your oil on a schedule consistent
with your diivilng cortdiiionsH
Always resei the engine ail Hie after an oil change. To
resel the CHi Liie System press and hold ihe select
buHon while EWGINE OIL LIFE is displayed.
The DIG does not replace the need to maintain your
vehicle as recommendEd in the Maintenance Schedule
in this manual Also, the oil change rennincier wNI not
delect
dusty conditions or engine maJlunctEpns that may
affect the oil, AlsOn Ihe oiE change reminder does nol
measure how much oil you have In your engine. So be
sure to checii your oH level often.
What to Do with Used Oii
Used engine oil canlatns csrlain elements that may t>e
unhealthy for your skin and could even cause cancer.
Don't ler used oil stay on your skin far very long. Clean
your skin and nails with soap and water, or a good
hand cleaner. Wash or properly dispose oí clothing
rags containing used engine oil. See the manufacturer's
warnings about the use and disposal of oN producís.
Used oil can be a ihreal lo the environmenL If you
change your own oil, he sure to drain all tho all from the
niter before disposal. Never dispose of oil by pulling
Ft
in Ihe trash, pouring it on Iho ground, into sewors, or Into
streams or bodies of water. Instead, recycle it by
laking it lo a place that coilscU used oil. If you have a
problem property disposing of your used oit, ask
your dealer, a service station or a local recycling center
lor help.