GMC 2001 C3 - Change Engine Oil

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Change Engine Oil
This message is displayed
when the engine oil needs
to be changed. The message
is only displayed for
15 seconds at the start of
each ignition cycle.
When you change the engine oil, be sure to reset the
CHANGE ENGINE OIL message. See “Engine Oil,
When to Change” in the Index.
Security
This message is displayed
when the content
theft-deterrent system
has been activated and
also monitors the
Passlock
R
system.
If the security message is displayed continuously while
driving and stays on, there may be a problem with the
Passlock system. Your vehicle will not be protected by
Passlock, and you should see your GM dealer.