GMC 2013 GMC Sierra User manual

2013 GMC SIERRA
WHERE POWER MEETS PRECISION
WE ARE PROFESSIONAL GRADE.

2013 GMC
SIERRA
GMC. Our commitment is to push the limits of what’s possible. Our dedication is to build professional-grade SUVs,
trucks and vans. Our products are purposefully engineered to offer you the highest standards of performance,
innovation and versatility. Like you, GMC believes that just being good enough is never enough and jobs worth
doing are worth doing well. It’s why the 2013 Sierra was built to work smart as well as efficiently. It’s why Sierra can
offer over 300 horsepower and an EPA-estimated 22 hwy mpg1in the same V-8 engine.
GMC. We are Professional Grade.
MODELS
SIERRA DENALI & DENALI HD pg. 2
SIERRA 1500 pg. 6
SIERRA ALL-TERRAIN pg. 10
SIERRA 2500HD pg. 12
SIERRA 3500HD pg. 14
FEATURES & BENEFITS pg. 16
COLOR & TRIM pg. 30
ACCESSORIES pg. 32
EQUIPMENT OPTIONS pg. 34
1Sierra XFE model.

SIERRA 1500 CREW CAB SLT IN QUICKSILVER METALLIC shown with available equipment.

Professional Grade—at GMC, that’s how we build our Sierra pickup truck, and Sierra Denali raises
that standard to the highest levels of excellence. Available in all Sierra series, from 1500 and
2500HD to our 3500HD with single or dual rear wheels—no GMC truck works harder, works
smarter, than Sierra Denali. It’s smarter, thanks to Sierra 1500 Denali’s standard Vortec 6.2L V-8.
No competitor’s V-8-powered pickup offers you 400-plus horsepower with better fuel economy.3
It’s stronger, thanks to Sierra Denali HD’s available Duramax Diesel 6.6L V-8—the most powerful
engine ever offered in a GMC HD pickup truck. A combination of iconic grille, wheels and chrome
accents distinguish the Denali exterior, while inside, Sierra Denali models reward you with a
spacious interior so refined, it rivals the comfort and technology of the finest passenger sedans.
SIERRA 1500 DENALI FEATURES
For details, see corresponding page number listed below.
6.2L V-8 VVT Engine pg. 17
403 Horsepower pg. 17
417 lb-ft Torque pg. 17
Eaton® Automatic Locking Rear Differential pg. 19
StabiliTrak Stability Control System pg. 20
20" Chrome Aluminum Wheels pg. 29
1Maximum trailer weight ratings are calculated assuming a base vehicle, except for any option(s) necessary to achieve the rating, plus
driver. The weight of other optional equipment, passengers and cargo will reduce the maximum trailer weight your vehicle can tow.
See your GMC dealer for additional details. 2Maximum payload capacity includes weight of driver, passengers, optional equipment
and cargo. 3EPA-estimated mpg Sierra Denali with 6.2L V-8 13 city/18 hwy. Based on GM 2012 Large Pickup segment.
2 | Models
SIERRA 1500 DENALI (upper )
Our 1 /2-ton Sierra 1500 Denali has a long list of standard features, including
our 6.2L V-8. So you’ll be able to combine strength and capability with
premium features to create a truck tailored to your purpose.
SIERRA 2500 DENALI HD (center )
Our 3 /
4-ton Sierra 2500HD Denali sits on a fully boxed, high-strength steel
frame specifically engineered for HD applications. With the available Duramax
Diesel 6.6L V-8 Turbo, it has a trailering capacity of up to 16,500 lbs.1
SIERRA 3500 DENALI HD (lower )
Our 1-ton Sierra 3500HD Denali is the ultimate expression of professional-grade
engineering. It offers an available maximum payload of up to 5355 lbs2and
maximum trailering of up to 22,600 lbs1with the available Duramax Diesel
6.6L V-8 Turbo.
SIERRA DENALI & DENALI HD
ELEVATING THE STANDARD
OF EXCELLENCE.

Models | 3
SIERRA 1500 DENALI IN ONYX BLACK shown with available equipment.

4 | Models
SIERRA 2500 DENALI HD INTERIOR IN EBONY shown with available equipment.

Models | 5
Sierra Denali is a truck built by—and for—those who demand attention to detail. Its
seating surfaces are trimmed in a premium leather material that’s perforated for
comfort. Its front seats are not only heated—they’re cooled, too, and feature 12-way
power adjustment. The gauge cluster integrates a Driver Information Center that puts
valuable information in one place. Every surface your eye scans tells you this is no
ordinary truck. Every feature you engage fulfills Denali’s aim to be the ultimate Sierra.
SIERRA DENALI INTERIOR FEATURES
For details, see corresponding page number listed below.
12-Way Power Heated & Cooled Front Seats pg. 24
Leather-Wrapped Heated Steering Wheel pg. 24
Automatic Dual-Zone Climate Control pg. 24
Bose® Centerpoint® Surround Sound System pg. 26
SIERRA DENALI INTERIOR
ITS DETAILS HAVE DETAILS.

6 | Models
SIERRA 1500 CREW CAB SLT IN QUICKSILVER METALLIC shown with available equipment.

Models | 7
1500 EXTENDED CAB
The rear doors of Sierra 1500 Extended Cab open 170 degrees, creating an ease of
access for passengers and cargo that makes this Sierra ideal for everyday use.
For Sierra 1500, GMC engineers have achieved a remarkable balance of power with
fuel efficiency. It starts with Sierra XFE, our 2WD V-8-powered Crew Cab. Its standard
315-hp 5.3L V-8 offers an EPA-estimated 22 hwy mpg, the best of any competitive
V-8 in its class.1Sierra 1500 is also available with a 403-hp Vortec 6.2L V-8 that is the
highest output V-8 we’ve ever put in a GMC 1
/2-ton pickup.
AVAILABLE SIERRA 1500 FEATURES
For details, see corresponding page number listed below.
SIERRA 1500
WASTE NOT, WANT NOT.
5.3L V-8 Engine pg. 16
Active Fuel Management pg. 16
315 Horsepower pg. 17
6-Speed Automatic Transmission pg. 18
StabiliTrak, Standard pg. 20
20" Chrome Wheels pg. 29
1EPA-estimated mpg Sierra XFE with 5.3L V-8 15 city/22 hwy. Based on GM 2012 Large Pickup segment.

8 | Models
Sierra 1500 SLT wraps proven capability around an interior that combines comfort,
convenience and style. The leather-appointed, 10-way adjustable front seats welcome
you into a world where everything serves a purpose. Sierra’s ergonomic design puts
important functions easily within the driver’s reach, including steering-wheel-mounted
audio and cruise controls and an available touch-screen Navigation System.2
AVAILABLE SIERRA 150O INTERIOR FEATURES
For details, see corresponding page number listed below.
STEERING WHEEL CONTROLS (upper)
Available steering-wheel-mounted controls allow the Sierra 1500 driver
convenient access to radio volume and Bluetooth1for phone while keeping
all eyes on the road.
REAR-VISION CAMERA SYSTEM (lower)
To help make backing out of parking spaces or hitching up trailers easier, a
rear-vision camera displays what’s in its field of vision. The available system
places a monitor in your rearview mirror or navigation screen, if equipped.
Automatic Dual-Zone Climate Control pg. 24
10-Way Power Front Seats pg. 24
Rear-Vision Camera System pg. 25
Touch-Screen Navigation2pg. 26
SIERRA SLT INTERIOR
PURPOSE, DRIVEN.
1Go to gm.com/bluetooth to find out which Bluetooth phones are compatible with the vehicle. 2Map coverage for
Puerto Rico and the U.S. Virgin Islands available on separate disc. Coverage not available for portions of Canada.

Models | 9
SIERRA 1500 SLT INTERIOR IN LIGHT TITANIUM shown with available equipment.

10 | Models
SIERRA ALL-TERRAIN
AN OFF-ROAD ALL-STAR.
Available 403-hp 6.2L V-8 pg. 17
Eaton Automatic Locking Rear Differential pg. 19
18" Chrome-Clad Aluminum Wheels pg. 29
Heavy-Duty Trailering Package pg. 34
Rancho Tenneco Shocks pg. 34
Z71 Off-Road Suspension pg. 34
When the pavement ends, Sierra All-Terrain is well-prepared. It was born ready,
thanks to a Z71 Off-Road Suspension with off-road jounce bumpers, a high-
capacity air cleaner and skid plates designed to protect the front underbody, oil pan,
differential and transfer case (if equipped). Rancho® Tenneco™ shocks enhance its
ability to take on challenging terrain. You decide the source of power: the standard
315-hp 5.3L V-8 or available 403-hp 6.2L V-8. You decide the style preferred: a four-
bar chrome grille, chrome-accented bodyside molding and 18-inch chrome wheels,
or body-color trim with body-color grille, bumpers, mirrors and door handles with
20-inch chrome wheels. Whichever you choose, Sierra All-Terrain is off-road ready
the second you drive it off the showroom floor.
SIERRA ALL-TERRAIN FEATURES
For details, see corresponding page number listed below.

Models | 11
SIERRA ALL-TERRAIN INTERIOR
The brushed aluminum trim and available two-tone leather-appointed seating
give Sierra All-Terrain an interior designed to match its unique exterior style.
SIERRA BODY COLOR ALL-TERRAIN IN SUMMIT WHITE shown with available equipment.

SIERRA 2500HD CREW CAB SLT IN QUICKSILVER METALLIC shown with available equipment.
12 | Models
Sierra 2500HD leads its class with a maximum 3 /
4-ton fifth-wheel trailer rating of up to
17,800 lbs.1It is strength combined with smarts, thanks to two innovations. StabiliTrak is
a stability control system that helps you stay on the path you are steering in bad weather
or on uneven road surfaces. Trailer Sway Control uses StabiliTrak’s sensors to detect the
rocking of a swaying trailer, then automatically applies the vehicle’s brakes to bring it back
in line. Need range? Sierra 2500HD with the available Duramax Diesel 6.6L V-8 Turbo has
a highway mileage range of up to 680 miles.2
SIERRA 2500HD FEATURES
For details, see corresponding page number listed below.
6.0L V-8, 360 hp, 380 lb-ft Torque pg. 17
Fully Boxed Steel Frame pg. 20
Available Diesel Exhaust Brake pg. 21
36-Gallon Fuel Tank (approx.) pg. 21
13,000 lb Conventional Hitch Max Trailer Rating
1
pg. 40
17,800 lb Fifth-Wheel Max Trailer Rating
1
pg. 40
SIERRA 2500HD
STRENGTH WITH INTELLIGENCE.
1Maximum trailer weight ratings are calculated assuming a base vehicle, except for any option(s) necessary to achieve the rating,
plus driver. The weight of other optional equipment, passengers and cargo will reduce the maximum trailer weight your vehicle
can tow. See your GMC dealer for additional details. 2Based on GM testing and fuel tank capacity. Your range may be less.
3Maximum payload capacity includes weight of driver, passengers, optional equipment and cargo.

Features & Benefits | 13
PAYLOAD AND TRAILERING (below, top left)
Sierra 2500HD has a maximum payload of up to 4212 lbs,3and with the available Duramax Diesel
6.6L V-8 Turbo, a maximum trailering capacity of up to 13,000 lbs1with a conventional ball hitch,
or up to 17,800 lbs1with a fifth-wheel or gooseneck hitch.
FOLDING MIRRORS (below, top right )
The outside mirrors fold to make it easier to navigate tight spaces, or available camper mirrors (shown
at bottom) extend to give you a wide view and you can retract them when parking in narrow spaces.
RECIRCULATING BALL STEERING (bottom)
Who says the steering in a heavy-duty pickup needs to feel sluggish? Sierra HD models feature
recirculating ball steering, which helps give the driver direct feedback to steering inputs. So the
response is quick and nimble.

14 | Models
PAYLOAD CAPACITY (upper)
The most capacity you can get in a GMC Sierra? Our 3500HD Regular Cab 2WD
Long Bed with dual rear wheels with a best-in-class payload capacity of up to
7222 lbs.
1If it’s cargo and crew you need to haul, or a combination of both, the
Sierra Crew is a Sierra built for the heaviest of heavy-duty jobs.
WIDE-VIEW MIRROR (center)
All 3500HD models come standard with vertical camper-style, convex spotter
surface mirrors that help you see what’s along your flanks when you’re trailering
a wide load.
TRAILERING CAPACITY (lower )
With a best-in-class 1-ton maximum fifth-wheel trailering capacity of up to
23,100 lbs2and a GCWR of 30,500 lbs,3Sierra 3500HD puts professional-grade
power to work for you (Crew Cab model shown can trailer up to 22,500 lbs2).
6.0L V-8, 360 hp, 380 lb-ft Torque pg. 17
Fully Boxed Steel Frame pg. 20
Available Diesel Exhaust Brake pg. 21
36-Gallon Fuel Tank (approx.) pg. 21
18,000-lb Conventional Hitch MaxTrailer Rating2pg.40
23,100-lb Fifth-Wheel Max Trailer Rating2pg. 40
SIERRA 3500HD
EXCUSELESS.
1Maximum payload capacity includes weight of driver, passengers, optional equipment and cargo. 2Maximum trailer weight
ratings are calculated assuming a base vehicle, except for any option(s) necessary to achieve the rating, plus driver.The weight
of other optional equipment, passengers and cargo will reduce the maximum trailer weight your vehicle can tow. See your GMC
dealer for additional details. 3When properly equipped, includes weight of the vehicle and trailer combination, including the
weight of driver, passengers, fuel, optional equipment and cargo in the vehicle and trailer.
The 2013 Sierra 3500HD is simply the toughest, strongest, most capable 1-ton pickup
truck we’ve ever built. Its available Duramax Diesel 6.6L V-8 Turbo generates 765 lb-ft of
torque and 397 horsepower that will keep the momentum rolling effortlessly all day long,
thanks to an Allison® 6-speed transmission geared to put you in precisely the right rpm
range for optimum performance and efficiency. Sierra 3500HD’s powertrain is mounted
to a fully boxed frame that’s 92 percent stronger and has five times more torsional
stiffness than our previous generation heavy-duty frame.
SIERRA 3500HD FEATURES
For details, see corresponding page number listed below.

Models | 15
SIERRA 3500HD CREW CAB SLT WITH DUAL REAR WHEELS IN QUICKSILVER METALLIC shown with available equipment.

1500 ENGINES
16 | Features & Benefits
HYDRAULIC VALVE LIFTER
VALVE
1VORTEC ENGINES To give you
uncompromised power and torque
for confident daily driving, passing
and trailering, look no further than
the Vortec engine family. Each
model uses innovative “vortex
technology” to swirl and tumble
incoming air and fuel for optimum
power and response.
VARIABLE VALVE TIMING (VVT)
For easy responsiveness in low-
speed city driving and bold power
for open-road passing or trailer-
ing, many Vortec engines feature
VVT. It monitors and changes
valve open and close points for
near-peak levels of torque across
the entire range of engine speeds.
2ACTIVE FUEL MANAGEMENT
Sierra 5.3L V-8 engines use Active
Fuel Management. This available
system senses load and demand,
then activates or deactivates four
of the engine’s eight cylinders. In
Sierra XFE, the result is competition-
leading V-8 EPA-estimated
highway fuel economy of 22 mpg.2
A valve lifter (above) deactivates
the cylinder. Under high-demand
conditions, the valve’s switching
mechanism is depressurized,
reengaging the cylinder and
restoring full power, without you
ever noticing the transition.
2Based on GM 2012 Large Pickup segment.
DURAMAX B20 BIODIESEL
CAPABILITY To reduce carbon-
dioxide emissions and stretch
your fuel budget, the Duramax
6.6L can operate on B20 biodiesel,
a mix of 20 percent biodiesel from
domestic, renewable resources,
and 80 percent petroleum diesel.
DURAMAX HIGH-PRESSURE
DIRECT INJECTION For fast starts
in cold weather, quieter operation
and maximum efficiency, the
direct injection system operates
at nearly 30,000 psi to turn heavy
diesel fuel into a fine mist,
burning cleaner and faster with
lower emissions and greater
power than the previous model.
3DURAMAX DIESEL 6.6L V-8
TURBO With direct-injection
technology that helps it start in as
little as 3.0 seconds at -40°F and a
sophisticated Allison® transmission
with overdrive, the available
Duramax Diesel 6.6L gives you a
maximum highway range of up to
680 miles on a single fill-up.3
3Based on GM testing and fuel tank capacity.
Your range may be less.
2
2
Vortec gasoline-powered V-6 and V-8 engines available in Sierra 1500 are
remarkable for the technology they bring to the full-size pickup. The results:
power of up to 403 hp from the available Vortec 6.2L V-8, and competition-
leading V-8 fuel efficiency of up to 22 mpg hwy from the available Vortec 5.3L V-8.1
1EPA-estimated 22 mpg hwy for Sierra XFE. Based on 2012 GM Large Pickup segment.
HD ENGINES
3
1
Sierra 2500HD and 3500HD models offer Vortec V-8 gasoline and Duramax
Diesel engines. No matter which you choose, you’ll have plenty of what you
demand from a heavy-duty pickup: power and torque, with deep reserves of
both for when your right foot asks for maximum effort.
Vortec 5.3L V-8 Engine

4
5
Features & Benefits | 17
HYBRID ALL ENGINES
At GMC, we’ve always believed in building the right tool for the job. With
Sierra, that translates into the widest range of engines of any pickup truck
manufacturer. We also believe that keeping your GMC operating at peak
performance should be easy, and thanks to innovative features like an Oil
Life Monitor and available OnStar engine diagnostics, it is.
GMC engineers gave Sierra Hybrid the capability of a V-8 with the efficiency
of a four-cylinder. The result: 332 horsepower, 367 lb-ft torque, up to 1527
lbs of payload4and up to 6100 lbs of conventional trailering5—all with a
category-leading fuel economy of an EPA-estimated 20 city/23 hwy.6
4Maximum payload capacity includes weight of driver, passengers, optional equipment and cargo. 5Maximum trailer weight ratings are calculated
assuming a base vehicle, except for any option(s) necessary to achieve the rating, plus driver. The weight of other optional equipment, passengers and
cargo will reduce the maximum trailer weight your vehicle can tow. See your GMC dealer for additional details. 6Based on GM 2012 Large Pickup segment.
1500 ENGINES
VORTEC 4.3L V-6 [LU3] HORSEPOWER: 195 hp @ 4600 rpm TORQUE: 260 lb-ft @ 2800 rpm
VORTEC 4.8L V-8 VVT [L20] HORSEPOWER: 302 hp @ 5600 rpm TORQUE: 305 lb-ft @ 4600 rpm
FlexFuel Capable
VORTEC 5.3L V-8 VVT [LMG] HORSEPOWER: 315 hp @ 5200 rpm TORQUE: 335 lb-ft @ 4000 rpm
Active Fuel Management/FlexFuel Capable, Iron Block
VORTEC 5.3L V-8 VVT [LC9] HORSEPOWER: 315 hp @ 5200 rpm TORQUE: 335 lb-ft @ 4000 rpm
Active Fuel Management/FlexFuel Capable, Aluminum Block
VORTEC 6.2L V-8 VVT [L9H] HORSEPOWER: 403 hp @ 5700 rpm TORQUE: 417 lb-ft @ 4300 rpm
FlexFuel Capable
HEAVY DUTY ENGINES
VORTEC 6.0L V-8 VVT (L96) HORSEPOWER: 360 hp @ 5400 rpm7TORQUE: 380 lb-ft @ 4200 rpm
FlexFuel Capable 73 /
4-ton models. See page 40 for engine specifications.
DURAMAX DIESEL 6.6L V-8 TURBO HORSEPOWER: 397 hp @ 3000 rpm TORQUE: 765 lb-ft @ 1600 rpm
HYBRID ENGINE
VORTEC 6.0L V-8 VVT (LZ1) HORSEPOWER: 332 hp @ 5100 rpm TORQUE: 367 lb-ft @ 4100 rpm
Active Fuel Management
EPA-est. mpg (city/highway): 20/23
OIL LIFE MONITOR For long life
and durability, nothing is more
important than changing your oil
at the right time. GMC engineered
the mystery out of this essential
service with the Oil Life Monitor.
It calculates how much life your
oil has left, based on when and
how you drive. Then, it updates
you with a telltale on your Driver
Information Center.
E85 FLEXFUEL CAPABILITY9
Most Sierra gas V-8 engines
are capable of running on E85
ethanol, an advanced biofuel.
9E85 is a blend of 85 percent ethanol and
15 percent regular gasoline. Visit gmc.com
and search E85 for more information on
E85 as an alternative fuel.
ONSTAR VEHICLE DIAGNOSTICS10
Standard with your 6-month trial
subscription to OnStar, the OnStar
Vehicle Diagnostics service can
run hundreds of checks of your
engine, transmission, antilock
brakes and more, then organize
the information into an easy-to-
read monthly report. OnStar can
also run a check of your vehicle as
you drive just by pressing the blue
button and asking the Advisor for
an On-Demand Diagnostics check.
So now, the peace of mind that
comes from knowing the condition
of your Sierra’s key systems is as
easy as checking your e-mail.
10Visit onstar.com for details and system
limitations.
4HYBRID MODEL VORTEC 6.0L
V-8 VVT (LZ1) WITH ACTIVE FUEL
MANAGEMENT To deliver
outstanding economy7without
compromise to torque or
horsepower, the 6.0L V-8 VVT
is engineered with Active Fuel
Management technology to
deactivate four of its eight
cylinders under light loads and
low speeds. At highway speeds,
the cylinders reactivate in an instant
to give you full engine power.
7EPA-estimated mpg 20 city/23 hwy.
5300-VOLT NiMH BATTERY PACK
The Nickel-Metal Hydride (NiMH)
battery technology can store a lot
of energy in a small space. In fact,
the 300-volt battery pack is strong
enough to propel your Sierra for
miles, yet small enough to fit under
the rear seat.
HYBRID MODEL 2-MODE
ELECTRONICALLY VARIABLE
TRANSMISSION To conserve fuel
at low speeds or under light loads,
this 2-mode transmission has
two integral electronic motors
that engage to give Sierra Hybrid
smooth, effortless power. At
higher loads and speeds with the
6.0L V-8 fully engaged, it acts as
a normal automatic transmission.
REGENERATIVE BRAKING
SYSTEM During normal stops,
regenerative braking uses the
motors in the hybrid transmission
as generators to slow the vehicle
by applying resistance in the
motors rather than brake friction.
Simultaneously, that energy is
captured as electricity in the 300-
volt battery pack, available for the
next acceleration cycle.
TRACTION CONTROL SYSTEM
To make the most of available
traction on many road surfaces,
traction control measures and
compares the speed of your
wheels. If it senses one or more
wheels starting to spin, such as
on a slippery surface, the system
applies individual brakes and
manages engine power to slow
the wheel down and maintain
traction so you can move forward
with a better sense of control.

TRANSMISSIONS/DRIVETRAIN
18 | Features & Benefits
6ALLISON® 1000 SERIES
6-SPEED AUTOMATIC WITH
OVERDRIVE How do you handle
the 765 lb-ft of torque produced
by Sierra HD’s available Duramax
Diesel engine? GMC engineers
specified the Allison 1000 Series
6-speed automatic with overdrive
for its heavy-duty strength and
durability.
A pickup truck’s transmission and driveline components are critical to translating every rotation of the engine’s crankshaft into power at the drive wheels—
power to tow and haul, power to pass, power to grip snow-covered asphalt or gravel-strewn backroads. GMC Sierra offers a range of robust yet refined
transmissions precisely matched to maximize the power delivery, efficiency and load demands of our eight Sierra engines.
6
HEAVY DUTY 6-SPEED
AUTOMATIC WITH OVERDRIVE
Sierra HD’s Vortec 6.0L V-8 is mated
to a 6-speed automatic with
overdrive built for heavy duty. It’s
a sophisticated tool that features
Tow/Haul mode, Driver Shift Control
and Automatic Engine Grade Braking
to help you use the full potential of
Sierra HD with confidence.
SIERRA HEAVY DUTY
6-SPEED AUTOMATIC WITH
OVERDRIVE Engineered for
control and confidence in a wide
variety of situations, the 6L80-E
6-speed automatic is an ideal
partner for Sierra 1500’s Vortec
family of gasoline engines. Filled
with innovative technology, this
available transmission can help
you cut steep climbs, long grades
and heavy loads down to size.
4-SPEED AUTOMATIC OVERDRIVE
TRANSMISSION Proven in millions
of Sierra 1500s, this durable
4-speed automatic with overdrive
gives you smooth shifts with
the strength of millions of miles
of experience. It’s engineered
with Tow/Haul mode to handle
maximum loads with ease.
TOW/HAUL MODE To give you
more power to accelerate, Tow/
Haul mode raises transmission
up-shift points. This feature also
helps you slow your Sierra by
raising downshift points, which
uses engine compression to
slow your Sierra.
AUTOMATIC ENGINE GRADE
BRAKING Standard with gas-
engine 6-speed automatic
transmissions, Grade Braking
automatically senses when you
want to slow your Sierra, and
when the conditions are met,
engages a Grade Braking shift
schedule that helps you maintain
your desired speed.
DRIVER SHIFT CONTROL
Move through the gears like a
manual, with the convenience
of an automatic. Move the shift
lever to “M,” and you get fingertip
“tap up/down” range control of
transmission gear selection.
Included with select automatic
transmissions.
SIERRA 1500
ALL MODELS