2015 GMC SIERRA 1500 4WD

Black plate (42,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
5-42 Instruments and Controls
Tire Messages
SERVICE TIRE MONITOR
SYSTEM
If equipped with the Tire Pressure
Monitor System (TPMS), this
message displays if a part on the
system is not working properly. The
tire pressure light also flashes and
then remains on during the same
ignition cycle. SeeTire Pressure
Light on page 5-28. Several
conditions may cause this message
to appear. See Tire Pressure
Monitor Operation on page 10-62.
If the warning comes on and stays
on, there may be a problem with the
TPMS. See your dealer.
TIRE LEARNING ACTIVE
If equipped with the Tire Pressure
Monitor System (TPMS), this
message displays when the system
is relearning the tire positions on
your vehicle. The tire positions must
be relearned after rotating the tires
or after replacing a tire or sensor.
See Tire Inspection on page 10-66, Tire Rotation on page 10-61,
Tire
Pressure Monitor System on
page 10-61, and Tire Pressure on
page 10-59.
TIRE PRESSURE LOW ADD
AIR TO TIRE
If equipped with the Tire Pressure
Monitor System (TPMS), this
message displays when the
pressure in one or more of the
vehicle's tires is low. This message
also displays with a vehicle picture
to indicate the location of the low
tire. The low tire pressure warning
light will also come on. See Tire
Pressure Light on page 5-28. You
can receive more than one tire
pressure message at a time. If a tire
pressure message appears on the
DIC, stop as soon as you can. Have
the tire pressures checked and set
to those shown on the Tire and
Loading Information label. See Tires
on page 10-50, Vehicle Load Limits
on page 9-15, and Tire Pressure on
page 10-59. The DIC also shows
the tire pressure values. See
Driver Information Center (DIC)
(Base Level) on page 5-30 orDriver
Information Center (DIC) (Uplevel)
on page 5-32.
Transmission Messages
4WD OFF
If equipped with four-wheel drive,
this message displays when the
four-wheel-drive system is
temporarily disabled due to an
overheated condition. The vehicle
will run in two-wheel drive when this
message is present. Once the
four-wheel-drive system cools down,
the message turns off and the
four-wheel-drive system returns to
normal operation.
4WD SHIFT IN PROGRESS
This message will display while the
four-wheel-drive system is shifting.

Black plate (43,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Instruments and Controls 5-43
FOR 4WD LOW SLOW TO XXX
If a four-wheel drive shift into
Four-Wheel Drive Low is requested,
but the vehicle speed is too high,
this message will display until the
correct vehicle speed is reached.
FOR 4WD LOW SHIFT TO
NEUTRAL
If a four-wheel drive shift into
Four-Wheel Drive Low is requested,
and the vehicle speed is correct, but
the transmission is not in
N (Neutral), this message will
display until the transmission is
shifted to N (Neutral).
GRADE BRAKING OFF
This message displays when grade
braking has been disabled with the
Tow/Haul Mode button on the end of
the shift lever. SeeTow/Haul Mode
on page 9-37, Automatic
Transmission on page 9-33, and
Cruise Control on page 9-53.
GRADE BRAKING ON
This message displays when grade
braking has been enabled with the
Tow/Haul Mode button on the end of
the shift lever. See Tow/Haul Mode
on page 9-37, Automatic
Transmission on page 9-33, and
Cruise Control on page 9-53.
GRADE BRAKING ACTIVE
This message displays when grade
braking has been activated while
driving on downhill grades. This
message will only appear the first
time the feature is activated in an
ignition cycle. See Tow/Haul Mode
on page 9-37, Automatic
Transmission on page 9-33, and
Cruise Control on page 9-53.
SERVICE 4WD
If the vehicle has four-wheel drive,
this message may display if a
problem occurs with the
four-wheel-drive system. If this
message appears, stop as soon as
possible and turn off the vehicle.
Make sure the key is in the LOCK/ OFF position for at least
one minute, then 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
four-wheel-drive system needs
service. See your dealer.
TO EXIT 4WD LOW SLOW
TO XXX
If a four-wheel drive shift out of
Four-Wheel Drive Low is requested,
but the vehicle speed is too high,
this message will display until the
correct vehicle speed is reached.
TO EXIT 4WD LOW SHIFT TO
NEUTRAL
If a four-wheel drive shift out of
Four-Wheel Drive Low is requested,
and the vehicle speed is correct, but
the transmission is not in
N (Neutral), this message will
display until the transmission is
shifted to N (Neutral).

Black plate (44,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
5-44 Instruments and Controls
TRANSMISSION HOT IDLE
ENGINE
This message displays and a chime
may sound if the transmission fluid
in the vehicle gets hot. Driving with
the transmission fluid temperature
high can cause damage to the
vehicle. Stop the vehicle and let it
idle to allow the transmission to
cool. This message clears and the
chime stops when the fluid
temperature reaches a safe level.
When towing, use Tow/Haul mode
to prevent damage to the engine or
transmission. SeeTow/Haul Mode
on page 9-37.
VEHICLE IN 4WD LOW
This message will display if the
vehicle is driven in Four-Wheel
Drive Low for about 10 minutes
above 72 km/h (45 mph).
Vehicle Reminder
Messages
CHECK TRAILER WIRING
On vehicles with the Integrated
Trailer Brake Control (ITBC) system,
this message may display and a
chime may sound when one of the
following conditions exists:
.A trailer with electric brakes
becomes disconnected from the
vehicle.
‐ If the disconnect occurs while
the vehicle is stopped, this
message clears itself after a
short time.
‐ If the disconnect occurs while
the vehicle is moving, this
message stays on until the
ignition is turned off.
.There is a short in the wiring to
the electric trailer brakes.
When this message displays, power
is no longer available to the trailer
brakes. As soon as it is safe to do so,
carefully pull the 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. This message clears if the trailer
is reconnected. This message also
clears if you acknowledge it. If this
message still displays, either the
vehicle or the trailer needs service.
See your dealer.
See
“Integrated Trailer Brake
Control System” underTowing
Equipment on page 9-87.
ICE POSSIBLE DRIVE
WITH CARE
This message displays when ice
conditions are possible.
TRAILER CONNECTED
On vehicles with the Integrated
Trailer Brake Control (ITBC) system,
this message displays briefly when
a trailer with electric or electric over
hydraulic brakes is first connected
to the vehicle.

Black plate (76,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
9-76 Driving and Operating
VehicleAxle RatioMaximum Trailer
Weight (c) GCWR (a)
1500 Series 4WD Regular Cab Standard Box
4.3L V6 (b) 3.423 085 kg (6,800 lb) 5 443 kg (12,000 lb)
5.3L V8 3.083 039 kg (6,700 lb) 5 443 kg (12,000 lb)
5.3L V8 3.423 946 kg (8,700 lb) 6 350 kg (14,000 lb)
1500 Series 4WD Double Cab Standard Box 4.3L V6 (b) 3.422 858 kg (6,300 lb) 5 443 kg (12,000 lb)
5.3L V8 3.082 812 kg (6,200 lb) 5 443 kg (12,000 lb)
5.3L V8 3.424 173 kg (9,200 lb) 6 804 kg (15,000 lb)
5.3L V8 3.734 944 kg (10,900 lb) 7 575 kg (16,700 lb)
6.2L V8 3.234 128 kg (9,100 lb) 6 804 kg (15,000 lb)
6.2L V8 3.425 353 kg (11,800 lb) 7 938 kg (17,500 lb)
1500 Series 4WD Crew Cab Standard Box
4.3L V6 (b) 3.422 812 kg (6,200 lb) 5 443 kg (12,000 lb)
5.3L V8 3.082 767 kg (6,100 lb) 5 443 kg (12,000 lb)

Black plate (77,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Driving and Operating 9-77
VehicleAxle RatioMaximum Trailer
Weight (c) GCWR (a)
5.3L V8 3.424 128 kg (9,100 lb) 6 804 kg (15,000 lb)
5.3L V8 3.734 899 kg (10,800 lb) 7 575 kg (16,700 lb)
6.2L V8 3.234 082 kg (9,000 lb) 6 804 kg (15,000 lb)
6.2L V8 3.425 307 kg (11,700 lb) 8 029 kg (17,700 lb)
1500 Series 4WD Crew Cab Short Box (b) 4.3L V6 3.422 858 kg (6,300 lb) 5 443 kg (12,000 lb)
5.3L V8 3.082 812 kg (6,200 lb) 5 443 kg (12,000 lb)
5.3L V8 3.424 173 kg (9,200 lb) 6 804 kg (15,000 lb)
5.3L V8 3.734 944 kg (10,900 lb) 7 575 kg (16,700 lb)
6.2L V8 3.234 128 kg (9,100 lb) 6 804 kg (15,000 lb)
6.2L V8 3.425 353 kg (11,800 lb) 8 029 kg (17,700 lb)
1500 Series 4WD Regular Cab Long Box
4.3L V6 (b) 3.422 995 kg (6,600 lb) 5 443 kg (12,000 lb)
5.3L V8 3.082 948 kg (6,500 lb) 5 443 kg (12,000 lb)
5.3L V8 3.424 309 kg (9,500 lb) 6 804 kg (15,000 lb)

Black plate (79,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Driving and Operating 9-79
VehicleAxle RatioMaximum Trailer
Weight (c) GCWR (a)
2500 Series 2WD Crew Cab Long Box
6.0L V8 3.734 400 kg (9,700 lb) 7 257 kg (16,000 lb)
6.0L V8 –Conventional Trailer 4.105 897 kg (13,000 lb) 9 299 kg (20,500 lb)
6.0L V8 –Fifth-Wheel Trailer 4.106 441 kg (14,200 lb) 9 299 kg (20,500 lb)
2500 Series 4WD Double Cab Standard Box 6.0L V8 3.734 400 kg (9,700 lb) 7 257 kg (16,000 lb)
6.0L V8 –Conventional Trailer 4.105 897 kg (13,000 lb) 9 299 kg (20,500 lb)
6.0L V8 –Fifth-Wheel Trailer 4.106 441 kg (14,200 lb) 9 299 kg (20,500 lb)
2500 Series 4WD Crew Cab Standard Box 6.0L V8 3.734 309 kg (9,500 lb) 7 257 kg (16,000 lb)
6.0L V8 –Conventional Trailer 4.105 897 kg (13,000 lb) 9 299 kg (20,500 lb)
6.0L V8 –Fifth-Wheel Trailer 4.106 350 kg (14,000 lb) 9 299 kg (20,500 lb)
2500 Series 4WD Regular Cab Long Box 6.0L V8 3.734 536 kg (10,000 lb) 7 257 kg (16,000 lb)
6.0L V8 –Conventional Trailer 4.105 897 kg (13,000 lb) 9 299 kg (20,500 lb)
6.0L V8 –Fifth-Wheel Trailer 4.106 577 kg (14,500 lb) 9 299 kg (20,500 lb)

Black plate (80,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
9-80 Driving and Operating
VehicleAxle RatioMaximum Trailer
Weight (c) GCWR (a)
2500 Series 4WD Double Cab Long Box
6.0L V8 3.734 355 kg (9,600 lb) 7 257 kg (16,000 lb)
6.0L V8 –Conventional Trailer 4.105 897 kg (13,000 lb) 9 299 kg (20,500 lb)
6.0L V8 –Fifth-Wheel Trailer 4.106 396 kg (14,100 lb) 9 299 kg (20,500 lb)
2500 Series 4WD Crew Cab Long Box 6.0L V8 3.734 218 kg (9,300 lb) 7 257 kg (16,000 lb)
6.0L V8 –Conventional Trailer 4.105 897 kg (13,000 lb) 9 299 kg (20,500 lb)
6.0L V8 –Fifth-Wheel Trailer 4.106 260 kg (13,800 lb) 9 299 kg (20,500 lb)
3500 Series 2WD Regular Cab Long Box 6.0L V8 (Single Rear Wheels)
Conventional Trailer 4.10
5 897 kg (13,000 lb) 9 299 kg (20,500 lb)
6.0L V8 (Single Rear Wheels)
Fifth-Wheel Trailer 4.10
6 623 kg (14,600 lb) 9 299 kg (20,500 lb)
6.0L V8 (Dual Rear Wheels) 3.734 400 kg (9,700 lb) 7 257 kg (16,000 lb)
6.0L V8 (Dual Rear Wheels)
Conventional Trailer 4.10
6 441 kg (14,200 lb) 9 299 kg (20,500 lb)

Black plate (82,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
9-82 Driving and Operating
VehicleAxle RatioMaximum Trailer
Weight (c) GCWR (a)
3500 Series 2WD Crew Cab Long Box
6.0L V8 (Single Rear Wheels) 3.734 309 kg (9,500 lb) 7 257 kg (16,000 lb)
6.0L V8 (Single Rear Wheels)
Conventional Trailer 4.10
5 897 kg (13,000 lb) 9 299 kg (20,500 lb)
6.0L V8 (Single Rear Wheels)
Fifth-Wheel Trailer 4.10
6 350 kg (14,000 lb) 9 299 kg (20,500 lb)
6.0L V8 (Dual Rear Wheels) 3.734 173 kg (9,200 lb) 7 257 kg (16,000 lb)
6.0L V8 (Dual Rear Wheels) 4.106 214 kg (13,700 lb) 9 299 kg (20,500 lb)
3500 Series 4WD Regular Cab Long Box 6.0L V8 (Single Rear Wheels) 3.734 445 kg (9,800 lb) 7 257 kg (16,000 lb)
6.0L V8 (Single Rear Wheels)
Conventional Trailer 4.10
5 897 kg (13,000 lb) 9 299 kg (20,500 lb)
6.0L V8 (Single Rear Wheels)
Fifth-Wheel Trailer 4.10
6 486 kg (14,300 lb) 9 299 kg (20,500 lb)
6.0L V8 (Dual Rear Wheels) 3.734 264 kg (9,400 lb) 7 257 kg (16,000 lb)
6.0L V8 (Dual Rear Wheels) 4.106 305 kg (13,900 lb) 9 299 kg (20,500 lb)