2015 GMC SIERRA 1500 Owners Manual

Black plate (72,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
9-72 Driving and Operating
4. Reapply the brake pedal. Thenapply the parking brake and shift
into P (Park).
5. Release the brake pedal.
Leaving After Parking on a Hill
1. Apply and hold the brake pedal.
2. Start the engine.
3. Shift into a gear.
4. Release the parking brake.
5. Let up on the brake pedal.
6. Drive slowly until the trailer is clear of the chocks.
7. Stop and have someone pick up and store the chocks.
Maintenance when Trailer
Towing
The vehicle needs service more
often when pulling a trailer. See
Maintenance Schedule on
page 11-3. Things that are
especially important in trailer
operation are automatic
transmission fluid, engine oil, axle lubricant, belts, cooling system, and
brake system. It is a good idea to
inspect these before and during
the trip.
Check periodically to see that all
hitch nuts and bolts are tight.
Trailer Towing
If the vehicle has a diesel engine,
see the Duramax diesel
supplement.
If the vehicle is bi-fuel, see the
bi-fuel supplement.
Do not tow a trailer during break-in.
See
New Vehicle Break-In on
page 9-23.
{Warning
The driver can lose control when
pulling a trailer if the correct
equipment is not used or the
vehicle is not driven properly. For
example, if the trailer is too
heavy, the brakes may not work
(Continued)
Warning (Continued)
well or even at all. The driver and
passengers could be seriously
injured. The vehicle may also be
damaged; the resulting repairs
would not be covered by the
vehicle warranty. Pull a trailer
only if all the steps in this section
have been followed. Ask your
dealer for advice and information
about towing a trailer with the
vehicle.
{Caution
Pulling a trailer improperly can
damage the vehicle and result in
costly repairs not covered by the
vehicle warranty. To pull a trailer
correctly, follow the advice in this
section and see your dealer for
important information about
towing a trailer with the vehicle.

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)

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 (78,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
9-78 Driving and Operating
VehicleAxle RatioMaximum Trailer
Weight (c) GCWR (a)
2500 Series 2WD Double Cab Standard 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)
2500 Series 2WD Crew Cab Standard Box 6.0L V8 3.734 445 kg (9,800 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 4.106 486 kg (14,300 lb) 9 299 kg (20,500 lb)
2500 Series 2WD Regular Cab Long Box 6.0L V8 3.734 672 kg (10,300 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 4.106 713 kg (14,800 lb) 9 299 kg (20,500 lb)
2500 Series 2WD Double Cab Long Box 6.0L V8 3.734 491 kg (9,900 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 4.106 532 kg (14,400 lb) 9 299 kg (20,500 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)