Security Light - GMC Yukon XL Denali 2005 Owner's Manual

A reading in the low pressure zone may be caused by a
dangerously low oil level or some other problem
causing low oil pressure. Check your oil as soon as
possible. See Engine Oil on page 5-14.
CAUTION:
{
Do not keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches fire. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
Notice: Lack of proper engine oil maintenance may
damage the engine. The repairs would not be
covered by your warranty. Always follow the
maintenance schedule in this manual for changing
engine oil.

Security Light

If the light flashes, the Passlock
tamper mode. If the vehicle fails to start, see Passlock
on page 2-19.
If the light comes on 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 dealer.
Also, see Content Theft-Deterrent on page 2-17 for
additional information regarding the security light.
This light will come on
briefly when you turn the
key toward START.
The light will stay on until
the engine starts.
®
system has entered a
®
3-43
®
®
,