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Black plate (38,1)
GMC Yukon/Yukon XL Owner Manual - 2012
5-38
Instruments and Controls
Battery Voltage and
Charging Messages
BATTERY LOW START
VEHICLE
When the vehicle
’
s battery is
severely discharged, this message
will display and four chimes will
sound. Start the vehicle
immediately. If the vehicle is not
started and the battery continues to
discharge, the climate controls,
heated seats, and audio systems
will shut off and the vehicle may
require a jump start. These systems
will function again after the vehicle
is started.
SERVICE BATTERY
CHARGING SYSTEM
On some vehicles, this message
displays if there is a problem with
the battery charging system. Under
certain conditions, the charging
system light may also turn on in the
instrument panel cluster. See
Charging System Light on
page 5
‑
20
. Driving with this problem
could drain the battery. Turn off all
unnecessary accessories. Have the
electrical system checked as soon
as possible. See your dealer.
Brake System Messages
SERVICE BRAKE SYSTEM
This message displays along with
the brake system warning light if
there is a problem with the brake
system. See
Brake System Warning
Light on page 5
‑
23
. If this message
appears, stop as soon as possible
and turn off the vehicle. Restart the
vehicle and check for the message
on the DIC display. If the message
is still displayed or appears again
when you begin driving, the brake
system needs service as soon as
possible. See your dealer.
SERVICE BRAKES SOON
This message displays if there is a
problem with the brake system.
If this message appears, stop as
soon as possible and turn off the
vehicle. Restart the vehicle and
check for the message on the DIC
display. If the message is still
displayed or appears again when
you begin driving, the brake system
needs service. See your dealer.
SERVICE TRAILER BRAKE
SYSTEM
On vehicles with the Integrated
Trailer Brake Control (ITBC) system,
this message displays and a chime
sounds when there is a problem
with the ITBC system.
When this message displays, power
is no longer available to the trailer
brakes.
As soon as it is safe to do so,
carefully pull your vehicle over to
the side of the road and turn the
ignition off. Check the wiring
connection to the trailer and turn the
ignition back on. If this message still
displays, either your vehicle or the
trailer needs service. See your
dealer.
Summary of Contents for 2012 GMC Yukon/Yukon XL
Page 6: ...Black plate 6 1 GMC Yukon Yukon XL Owner Manual 2012 vi Introduction 2 NOTES...
Page 34: ...Black plate 28 1 GMC Yukon Yukon XL Owner Manual 2012 1 28 In Brief 2 NOTES...
Page 58: ...Black plate 24 1 GMC Yukon Yukon XL Owner Manual 2012 2 24 Keys Doors and Windows 2 NOTES...
Page 266: ...Black plate 14 1 GMC Yukon Yukon XL Owner Manual 2012 8 14 Climate Controls 2 NOTES...
Page 398: ...Black plate 42 1 GMC Yukon Yukon XL Owner Manual 2012 10 42 Vehicle Care...
Page 465: ...Black plate 5 1 GMC Yukon Yukon XL Owner Manual 2012 Service and Maintenance 11 5...
Page 467: ...Black plate 7 1 GMC Yukon Yukon XL Owner Manual 2012 Service and Maintenance 11 7...