
Black plate (21,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Driving and Operating 9-21
* EquipmentMaximum
Weight
Side Boxes
and Cargo 113 kg per
side (250 lb
per side)
* The combined weight for all
rail-mounted equipment should
not exceed 454 kg (1,000 lb).
Loading Points
1. Primary Load Points
2. Secondary Load Areas 3. GM Approved Accessory
Mounting Points
Structural members (1) and (2) are
included in the pickup box design.
Additional accessories should use
these load points. Depending on the
accessory design, use a spacer
under the accessory at the load
points to remove gap. The holes for
GM approved accessories (3) are
not intended for aftermarket
equipment. See www.gmupfitter.com
for additional pickup box load
bearing structural information.
Truck-Camper Loading
Information
A vehicle-specific Truck-Camper
Loading Information label is
attached to the inside of the
vehicle's glove box. This label
indicates if a slide-in camper
can be carried, how much of a
load the vehicle can carry, and
how to correctly spread out the load. It will help to match the
right slide-in camper to the
vehicle.
Your dealer can help make a
good vehicle-camper match and
help determine the Cargo
Weight Rating (CWR).
When installing and loading a
slide-in camper, check the
manufacturer's instructions.
When carrying a slide-in
camper, the total cargo load of
the vehicle is the weight of the
camper plus:
.Everything added to the
camper after it left the
factory.
.Everything in the camper.
.All the people inside.
The CWR is the maximum
weight of the load the vehicle
can carry. It does not include the

Black plate (22,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
9-22 Driving and Operating
weight of the people inside. But,
use about 68 kg (150 lb) for
each seat.
The total cargo load must not be
more than the vehicle's CWR.
Refer to the Truck-Camper
Loading Information label in the
glove box for dimensions 1 and
2 as shown in the following
illustration.
Use the rear edge of the load
floor for measurement purposes.
The recommended location for
the cargo center of gravity is at
point 3 for the CWR. It is the
point where the mass of a bodyis concentrated and,
if suspended at that point, would
balance the front and rear.
Here is an example of proper
truck and camper match:
1.Camper Center of Gravity
2.Recommended Center of
Gravity Location Zone
When the truck is used to carry
a slide-in camper, the total cargo
load of the truck consists of the
manufacturer's camper weight
figure, the weight of installed additional camper equipment not
included in the manufacturer's
camper weight figure, the weight
of camper cargo, and the weight
of passengers in the camper.
The total cargo load should not
exceed the truck's cargo weight
rating, and the camper's center
of gravity (1) should fall within
the truck's recommended center
of gravity zone (2) when
installed.
Any accessories or other
equipment that are added to the
vehicle must be weighed. Then,
subtract this extra weight from
the CWR. This extra weight may
shorten the center of gravity
zone of the vehicle.
If the slide-in camper and its
load weighs less than the CWR,
the center of gravity zone for the
vehicle may be larger.

Black plate (23,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Driving and Operating 9-23
Secure loose items to prevent
weight shifts that could affect the
balance of the vehicle. When the
truck-camper is loaded, drive to
a scale and weigh on the front
and on the rear wheels
separately to determine axle
loads. Individual axle loads
should not exceed either of the
gross axle weight ratings
(GAWR). The total axle loads
should not exceed the vehicle's
gross vehicle weight rating
(GVWR). These ratings are
given on the Certification/Tire
label attached to the B-pillar.See
“Certification/Tire Label”
under Vehicle Load Limits on
page 9-15. If weight ratings are
exceeded, move or remove
items to bring all weights below
the ratings.
See your dealer for more
information on curb weights,
cargo weights, Cargo Weight
Rating, and the correct center of
gravity zone.Starting and
Operating
New Vehicle Break-In
{Caution
The vehicle does not need an
elaborate break-in. But it will
perform better in the long run if
you follow these guidelines:
.Keep the vehicle speed at
88 km/h (55 mph) or less for
the first 805 km (500 mi).
.Do not drive at any one
constant speed, fast or slow,
for the first 805 km (500 mi).
Do not make full-throttle
starts. Avoid downshifting to
brake or slow the vehicle.
.Avoid making hard stops for
the first 322 km (200 mi) or
so. During this time the new
brake linings are not yet
(Continued)

Black plate (30,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
9-30 Driving and Operating
1. Hold the brake pedal down, thenset the parking brake.
See Parking Brake on
page 9-48.
2. Move the shift lever into the P (Park) position by pulling the
shift lever toward you and
moving it up as far as it will go.
3. Be sure the transfer case (if equipped) is in a drive
gear —not in N (Neutral).
4. Turn the ignition key to LOCK/OFF.
5. Remove the key and take it with you. If you can leave the vehicle
with the ignition key in your
hand, the vehicle is in P (Park).Leaving the Vehicle with the
Engine Running
{Warning
It can be dangerous to leave the
vehicle with the engine running.
The vehicle could move suddenly
if the shift lever is not fully in
P (Park) with the parking brake
firmly set.
If you have four-wheel drive and
the transfer case is in N (Neutral),
the vehicle will be free to roll,
even if the shift lever is in
P (Park). So be sure the transfer
case is in a drive gear —not in
N (Neutral).
And, if you leave the vehicle with
the engine running, it could
overheat and even catch fire. You
or others could be injured. Do not
leave the vehicle with the engine
running unless you have to. If you have to leave the vehicle with
the engine running, be sure the
vehicle is in P (Park) and the
parking brake is firmly set before
you leave it. After you move the shift
lever into P (Park), hold the regular
brake pedal down. Then, see if you
can move the shift lever away from
P (Park) without first pulling it toward
you. If you can, it means that the
shift lever was not fully locked into
P (Park).
Torque Lock
If you are parking on a hill and you
do not shift the transmission into
P (Park) properly, the weight of the
vehicle may put too much force on
the parking pawl in the
transmission. You may find it difficult
to pull the shift lever out of P (Park).
This is called torque lock. To
prevent torque lock, set the parking
brake and then shift into P (Park)
properly before you leave the driver
seat. To find out how, see
Shifting
Into Park on page 9-29.

Black plate (73,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Driving and Operating 9-73
SeeVehicle Load Limits on
page 9-15 for more information
about the vehicle's maximum load
capacity.
To identify the trailering capacity of
the vehicle, read the information in
“Weight of the Trailer” later in this
section.
Trailering is different than just
driving the vehicle by itself.
Trailering means changes in
handling, acceleration, braking,
durability, and fuel economy.
Successful, safe trailering takes
correct equipment, and it has to be
used properly.
The following information has many
time-tested, important trailering tips
and safety rules. Many of these are
important for your safety and that of
your passengers. Read this section
carefully before pulling a trailer.Weight of the Trailer
How heavy can a trailer safely be?
It depends on how the rig is used.
Speed, altitude, road grades,
outside temperature, and how much
the vehicle is used to pull a trailer
are all important. It can depend on
any special equipment on the
vehicle, and the amount of tongue
weight the vehicle can carry. See
“Weight of the Trailer Tongue” later
in this section for more information.
Trailer Weight Rating (TWR) is
calculated assuming the tow vehicle
has only the driver but all required
trailering equipment. Weight of
additional optional equipment,
passengers, and cargo in the tow
vehicle must be subtracted from the
trailer weight rating. For kingpin weight and trailer
tongue weight information, see
“Weight of the Trailer Tongue”
later
in this section.
Use the following chart to determine
how much the vehicle can weigh,
based upon the vehicle model and
options.
Weights listed apply for
conventional trailers and fifth-wheel
trailers unless otherwise noted.

Black plate (74,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
9-74 Driving and Operating
VehicleAxle RatioMaximum Trailer
Weight (c) GCWR (a)
1500 Series 2WD Regular Cab Standard Box
4.3L V6 (b) 3.232 767 kg (6,100 lb) 4 990 kg (11,000 lb)
4.3L V6 (b) 3.732 223 kg (4,900 lb) 4 309 kg (9,500 lb)
4.3L V6 (b) 4.102 223 kg (4,900 lb) 4 309 kg (9,500 lb)
5.3L V8 3.083 130 kg (6,900 lb) 5 443 kg (12,000 lb)
5.3L V8 3.424 037 kg (8,900 lb) 6 350 kg (14,000 lb)
1500 Series 2WD Double Cab Standard Box 4.3L V6 (b) 3.232 540 kg (5,600 lb) 4 990 kg (11,000 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)
5.3L V8 3.735 035 kg (11,100 lb) 7 575 kg (16,700 lb)
6.2L V8 3.234 264 kg (9,400 lb) 6 804 kg (15,000 lb)
6.2L V8 3.425 443 kg (12,000 lb) 8 029 kg (17,700 lb)
1500 Series 2WD Crew Cab Standard Box 4.3L V6 (b) 3.232 495 kg (5,500 lb) 4 990 kg (11,000 lb)
5.3L V8 3.082 858 kg (6,300 lb) 5 443 kg (12,000 lb)

Black plate (75,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Driving and Operating 9-75
VehicleAxle RatioMaximum Trailer
Weight (c) GCWR (a)
5.3L V8 3.424 219 kg (9,300 lb) 6 804 kg (15,000 lb)
5.3L V8 3.734 990 kg (11,000 lb) 7 575 kg (16,700 lb)
6.2L V8 3.234 219 kg (9,300 lb) 6 804 kg (15,000 lb)
6.2L V8 3.425 398 kg (11,900 lb) 7 938 kg (17,500 lb)
1500 Series 2WD Crew Cab Short Box (b) 4.3L V6 3.232 495 kg (5,500 lb) 4 990 kg (11,000 lb)
5.3L V8 3.082 903 kg (6,400 lb) 5 443 kg (12,000 lb)
5.3L V8 3.424 264 kg (9,400 lb) 6 804 kg (15,000 lb)
5.3L V8 3.734 990 kg (11,000 lb) 7 575 kg (16,700 lb)
6.2L V8 3.234 219 kg (9,300 lb) 6 804 kg (15,000 lb)
6.2L V8 3.425 443 kg (12,000 lb) 8 029 kg (17,700 lb)
1500 Series 2WD Regular Cab Long Box
4.3L V6 (b) 3.232 676 kg (5,900 lb) 4 990 kg (11,000 lb)
5.3L V8 3.083 039 kg (6,700 lb) 5 443 kg (12,000 lb)
5.3L V8 3.424 445 kg (9,800 lb) 6 804 kg (15,000 lb)

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)