Engine Power Messages; Fuel System Messages; Key And Lock Messages; Engine Power Is Reduced - GMC 2012 Yukon/Yukon XL Owner's Manual

cause of the low oil pressure is
corrected. See
for more information.
This message displays if low oil
pressure levels occur. Stop the
vehicle as soon as safely possible
and do not operate it until the cause
of the low oil pressure has been
corrected. Check the oil as soon as
possible and have the vehicle
serviced by your dealer. See Engine
Oil on page 10 8.

Engine Power Messages

ENGINE POWER IS REDUCED

This message displays and a chime
sounds when the cooling system
temperature gets too hot and the
engine further enters the engine
coolant protection mode. See
Engine Overheating on page 10 21
for further information.
This message also displays when
the engine power is reduced.
Reduced engine power can affect
the vehicle's ability to accelerate.
If this message is on, but there
is no reduction in performance,
proceed to your destination. The
performance may be reduced the
next time the vehicle is driven. The
vehicle may be driven at a reduced
speed while this message is on, but
acceleration and speed may be
reduced. Anytime this message
stays on, the vehicle should be
taken to your dealer for service as
soon as possible.

Fuel System Messages

FUEL LEVEL LOW
This message displays and a chime
sounds if the fuel level is low. Refuel
as soon as possible. See Fuel
Gauge on page 5 14 and Fuel on
page 9 61 for more information.
TIGHTEN GAS CAP
This message may display along
with the check engine light on the
instrument panel cluster if the fuel
Instruments and Controls
cap is not tightened properly. See
Malfunction Indicator Lamp on
page 5 21. Reinstall the fuel cap
fully. See Filling the Tank on
page 9 65. The diagnostic system
can determine if the fuel cap has
been left off or improperly installed.
A loose or missing fuel cap allows
fuel to evaporate into the
atmosphere. A few driving trips with
the cap properly installed should
turn this light and message off.

Key and Lock Messages

REPLACE BATTERY IN
REMOTE KEY
This message displays if a Remote
Keyless Entry (RKE) transmitter
battery is low. The battery needs to
be replaced in the transmitter. See
Battery Replacement under
Remote Keyless Entry (RKE)
System Operation on page 2 3.
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