New for 2015:
8L90 eight-speed automatic transmission (6.2L V-8 models)
ride control suspension added to Sierra Denali
IntelliLink with Text Messaging Alerts and Siri Eyes Free
OnStar with 4G LTE and built-in Wi-Fi hotspot (3GB/three-month data trial)
trailering ratings based on SAE J2807 Recommended Practices
bedliner now offered on all models – including three-dimensional GMC logo;
standard on Sierra Denali (with Denali logo)
- New, available up-level
trailering mirrors with LED rear guidance lamps
port added to upper glove box on SLE models with 40/20/40 front bench seat
colors: Emerald Green Metallic and Stone Blue Metallic
2015 GMC SIERRA 1500 ENHANCED WITH GREATER
CONNECTIVITY, ALL-NEW EIGHT-SPEED AUTOMATIC TRANSMISSION
a complete redesign in 2014 that helped it earn a Consumers Guide®
Automotive Best Buy award and Kelley Blue Book’s 5-Year Cost to Own award, the
Sierra 1500 adds an all-new eight-speed automatic transmission to its
powertrain roster, enhancing efficiency and refinement while maintaining
capability. It’s included on models equipped with the EcoTec3 6.2L V-8 engine
new eight-speed automatic helps the pickup retain its 12,000-pound maximum
trailering rating under newly adapted SAE J2807 Recommended Practices.
Additionally, the entire lineup is available with a number of features
engineered for serious towing, including the available NHT max trailering
package, which features a 9.76-inch rear axle, heavy-duty rear springs, revised
shock tuning, enhanced cooling and an integrated trailer brake controller to
optimize capability and comfort when trailering.
The Sierra also enters
2015 with technologies that enhance connectivity, including Text Messaging Alerts, Siri Eyes Free and new,
available OnStar with 4G LTE with a built-in Wi-Fi hotspot (standard on SLE,
SLT and Denali). It provides a mobile hub for drivers and passengers to stay
connected. The hotspot is on whenever the vehicle is on and comes with a
three-month/three-gigabyte data trial.
Magnetic ride control is a new,
exclusive standard feature for the distinctive Sierra Denali. Based on the real-time damping system that’s standard on
the all-new, 2015 GMC Yukon Denali, it delivers more precise body motion
control by “reading” the road every millisecond and changing damping in just
Sierra Denali is the only full-size truck to offer
magnetic ride control; and along with the available 6.2L V-8 and new eight-speed
automatic transmission, solidifies its position as the most refined,
technically advanced truck on the market.
2015 Sierra 1500 range includes regular cab and two four-door cabs – the double
cab and crew cab – body styles, all offered with 4WD. Models and trim levels
the standard model, SLE, SLT and Denali (regular cab offered only in standard
and SLE trims). The off-road-inspired All Terrain package is offered on double
cab and crew cab models with SLE or SLT trim and includes the Z71 Off Road
cab models are available with a 6’6” box or an 8’ box. Double cab models are
offered exclusively with the 6’6” box, while crew cabs are available with a
5’8” box or the 6’6” box.
with configurations to suit just about every need, Sierra’s range of
technologies is tailored to the way customers use full-size pickups, providing
the power, efficiency, refinement and dependability they expect. Examples
6.2L EcoTec3 V-8 is the most powerful engine offered in any light-duty pickup,
with 420 horsepower and 460 lb-ft of torque. It is matched with the all-new
Hydra-Matic 8L90 eight-speed automatic transmission that supports Sierra’s
capability with greater efficiency and refinement
steel that makes the frames and cabs stronger and lighter, yet can take the
pounding of towing, hauling and off-road operation, year after year – and helps Sierra deliver a 5-Star
rating in the newest government crash test
use of aluminum alloys to reduce the weight of engines, front suspension
components, hoods and other parts
interiors featuring ample storage, multiple power and USB connections
tie-down system in the rear
segment’s only standard projector-beam headlamps.
new and enhanced features for 2015 include the available spray-on bedliner now
offered on all models (standard on Denali); and a USB port is added to the
upper glove box on SLE models equipped with the 40/20/40 front bench seat.
GMC backs Sierra customers with the ProGrade
protection program. It includes two years/24,000 miles (whichever comes first)
of scheduled maintenance, covering four services of an oil change, tire
rotation and 27-point inspection. It complements the three-year/36,000-mile
(whichever comes first) bumper-to-bumper limited vehicle warranty and
five-year/100,000-mile (whichever comes first) powertrain limited warranty for
peace of mind.
Sierra Denali details
The distinctive Sierra
Denali delivers GMC capability with unique design cues and exclusive features. On the exterior it wears a signature Denali chrome grille,
unique 20-inch wheels, unique interior decorative trim, a polished stainless
steel exhaust outlet and body-color front and rear bumpers. Denali-specific
interior details include script on the bright door sills and embossed into the
front seats and real aluminum trim.
Sierra Denali’s high-tech interior also
features an exclusive eight-inch-diagonal Customizable Driver Display – with
unique Denali-themed screen graphics at start-up – that can show relevant
settings, audio and navigation information in the instrument panel. Sierra
Denali’s standard eight-inch Color Touch navigation radio with Intellilink,
located above the center console, serves as the main hub for
Bluetooth-connected phones and portable devices connected through five standard
Other features standard on Sierra
Denali include projector-style headlamps with LED signature daytime running
lights, a factory-installed spray-on bed liner with a three-dimensional Denali
log, a Bose audio system, heated and cooled leather front bucket seats, a
heated steering wheel, front and rear park assist and a power sliding rear
window with defogger.
And new for 2015 is third-generation
magnetic ride control, which delivers more precise body
motion control. Its sensors “read” the
road every millisecond, triggering damping changes in as little as five
milliseconds in electronically controlled shock absorbers that replace
conventional mechanical-valve shocks. They’re filled with a magneto-rheological
fluid containing minute iron particles and under the presence of a magnetic
charge, the iron particles align to provide damping resistance. Changes in the
magnetic charge alter the damping rate of the shocks, with changes occurring
Off road-inspired All-Terrain
Sierra All-Terrain blends
capability with unique style, including a painted grille and less chrome than
other Sierra models. It is available on double cab and crew cab models with SLE
or SLT trim.
The All-Terrain also
includes the Z71 Off Road suspension, with Rancho monotube shocks, hill descent control, front
recovery hooks, a transfer case shield and unique wheels and tires, along with an automatic locking rear differential that reacts in milliseconds in low-traction
situations to improve safety and confidence on wet, snowy or muddy surfaces.
Sierra All Terrain is
available exclusively with an ebony interior and with front bucket seats on SLE
models. A carbon fiber-look seat accent is standard on SLT models.
Sierra design and exterior features
Sierra’s exterior design is refined and
aerodynamic, helping reduce wind noise in the cabin and enhancing efficiency on
the highway. Inlaid doors fit into body sides rather than wrapping over the
roof and combine with triple door seals to reduce wind noise and turbulence,
helping quiet the cab. Also, the front of the truck is carefully sealed to
provide efficient cooling with minimal aerodynamic drag. An aluminum hood with
twin power domes also enhances efficiency with lower weight than a steel hood.
The Sierra’s signature bold appearance is
distinguished with the segment’s only standard projector-beam headlamps – and
available LED signature accent lighting. All models have chrome grille surrounds and premium black wheel arch
moldings. Different trim levels feature chrome belt moldings, mirror caps and
door handles, as well as unique wheel designs and grille details. Chrome
bumpers are included on standard, SLE and SLT trims, and body-color bumpers are
included on All Terrain and Sierra Denali.
heated, power-adjustable trailering mirrors are offered on SLE and SLT –
including All Terrain – and Denali, featuring segment-first LED rear guidance
lamps. The large mirrors feature 51 square inches of flat mirror surface
positioned over a 24.5-square-inch convex mirror surface (convex area not
heated or power-adjustable). The new LED rear guidance lamps are integrated in
each mirror to enhance trailer visibility when backing up, as well as an amber
auxiliary clearance lamp.
When it comes to ergonomics, Sierra’s wide rear
crew cab doors make it easier to get in and out of the truck, while the pickup
box’s two-tier loading design, CornerStep rear bumper and ergonomically shaped
handholds built into new box rail protectors make it easier to load and
Sierra’s design also includes a smart pickup box
that’s strong and durable – and offers greater cargo flexibility. It features a
two-tier loading design that allows customers to insert a platform to separate
items during hauling or conceal valuables below, such as power tools.
The EZ Lift-and-Lower tailgate makes it easier to
access the box. An internal torsion bar
reduces the effort to raise and lower it, while a rotary damper allows for a
controlled and more gradual lowering motion when opening it. The tailgate is
also easily removable without tools. It is standard on regular cab SLE models,
double cab and crew cab models with SLE or SLT trim, and Sierra Denali.
To ensure loaded items remain in place while the
vehicle is in motion, four integrated cargo tie-down provisions are built into
the lower corners of the Sierra’s pickup box and adjustable upper tie-down
hooks are available. The patented upper hooks – each rated at 250 pounds – can
be placed in several locations around the upper bed rails, providing
flexibility for securing loads of all shapes and sizes. Moving them is fast,
easy and requires only a simple hand tool. Four of the hooks are included with
the optional package, with additional hooks available as accessories from GMC
A box light is standard and mounted above the rear
window, while available under-rail LED lights enhance illumination and turn on
with the standard overhead box lamp. They are standard on SLE and SLT.
Sierra interior details
The Sierra’s interior is roomy, quiet and functional, with a strong cab structure the foundation for its refinement. Nearly
two-thirds of the cab is made of high-strength steel, while shear-style body
mounts are used to tune out both up-and-down and side-to-side movement for a
quiet, comfortable ride. Double and crew cab models have a set of hydraulic
body mounts to further isolate the cabs.
All models feature an upright instrument panel with
a six-gauge instrument cluster and multiple storage options tailored to the
needs of customers who rely on their truck for more than simply hauling cargo.
The controls are logically placed and easy to operate with work gloves on.
The instrument panel has a simple,
intuitive six-gauge cluster. Standard models include a 3.5-inch driver
information center display in the middle of the instrument cluster, with a
4.2-inch color driver information center display, for vehicle and infotainment
data, standard on SLE, SLT and Sierra Denali. Ambient
lighting highlights all functional areas, such as the “4x4” and headlamp
switches, as well as the radio, for easier viewing at night.
All models have extensive
interior storage, tailored to the way customers use their trucks. The center
console – available on vehicles with front bucket seats – offers nearly 1 cubic
foot (24.5 liters) of combined storage space, with the depth and width to
conceal a laptop computer. Additionally, the locking console accommodates
hanging files for owners who use their truck as a rolling office, as well as
controls for overhead ambient lighting, map pockets
along the side, movable cup holders and
reconfigurable compartments. It also includes five USB
ports, two 12-volt power points, a new 110-volt outlet and a cord management
system, allowing owners to leave their phone charger plugged in for quicker
access when it’s needed, but remains concealed and without a dangling cord when
it’s not. Plus, there’s a location on the console designed specifically for
cell phone storage.
The fold-down center armrest on standard models and
other models equipped with the 40/20/40-split bench seat offers covered storage
and connectivity, with two USB ports and two 12-volt power points.
Front seating configurations include:
- Sierra – Standard
40/20/40-split vinyl bench seat with fold-down armrest that includes
covered storage and three integrated cup holders. Cloth seating is
- SLE – Standard 40/20/40-split
cloth bench seat with fold-down armrest that includes covered storage and
three integrated cup holders. Heated, leather-trimmed bench seat available
and heated, cloth front bucket seats included with All Terrain
- SLT – Standard
leather-trimmed 40/20/40-split bench seat with fold-down armrest that
includes covered storage and three integrated cup holders, lockable
under-seat storage compartment. Heated and cooled perforated leather front
bucket seats available; heated, cloth bucket seats included with All
- Denali – Full-feature
leather-appointed bucket seats with 12-way driver and passenger power
adjustments, including four-way power lumbar control and two-position
Three interior trim colors are offered: Jet Black,
Jet Black with Dark Ash accents and Cocoa with Dune accents. Sierra Denali is
offered in Jet Black or Cocoa/Dune.
IntelliLink and OnStar 4G LTE
The 2015 GMC Sierra’s
next-generation IntelliLink infotainment system is better connected and offers
passengers more choices for their increasingly plugged-in lifestyles. It provides
easy, intuitive operation of basic functions, yet it is also highly
customizable and capable of linking up to 10 devices such as smartphones, SD
cards and MP3 players, giving customers more ways of staying connected.
Enhanced connectivity and convenience includes a
new Text Messaging Alerts feature for smartphone users with Bluetooth profile
(M.A.P.), which reads incoming texts through the vehicle’s speakers, and Siri
Eyes Free for iPhone iOS 6 and iOS 7 users to enhance connectivity and
convenience. Each enables voice-controlled connectivity, to help keep phones safely
stowed and hands on the wheel.
standard and available features include:
- Eight-inch-diagonal color touch screen and
multiple USB ports
- Available OnStar with 4G LTE and standard
built-in Wi-Fi hotspot
IntelliLink enhancements with gesture recognition
and natural language voice recognition
New OnStar with 4G LTE and standard built-in Wi-Fi hotspot
provides a mobile hub for drivers and
passengers to stay connected, making the Sierra a mobile, connected office on
the go. The hotspot is on whenever the vehicle is on and comes with a
three-month/three-gigabyte data trial.
4G LTE is the most current and fastest mobile data
network – 10 times faster than 3G and 100 times faster than the previous
generation of OnStar hardware. And with OnStar, it
also offers stronger, broader coverage than smartphones on the same network and
it’s easy to use: If the vehicle is on, the connection is on.
At the time of purchase, six
months OnStar Directions and Connections includes all of OnStar’s advisor-based
safety and security features, including Automatic Crash Response and Stolen
Vehicle Assistance, as well as turn-by-turn navigation.
Five years of OnStar Basic Plan
includes RemoteLink Key Fob Services,
allowing owners to remotely start and lock/unlock a car (if properly equipped),
and activate the horn and lights from anywhere with a data connection. It also
includes OnStar Vehicle Diagnostics, which runs monthly checks of a vehicle’s
engine, transmission, anti-lock brakes and more, and Dealer Maintenance
Notification, which sends diagnostic report directly to a preferred dealer simplify
The Sierra’s trio of EcoTec3 engines – a 4.3L V-6,
5.3L V-8 and 6.2L V-8 – is designed to balance confident performance with
efficiency. Each features direct injection, Active Fuel Management (cylinder
deactivation) and continuously variable valve timing to make the most of power,
torque and efficiency across a broad range of operating conditions:
The 4.3L V-6 is SAE-certified at 285 horsepower
(212 kW) and 305 lb.-ft. of torque (413 Nm) – the most torque of any standard
The 5.3L V-8 is SAE-certified at 355 horsepower
(250 kW) and 383 lb.-ft. of torque (519 Nm). With EPA-estimated fuel economy of
23 mpg highway (2WD), it offers the best fuel economy of any V-8 pickup, and
beats the fuel economy estimates of the Ford EcoBoost V-6.
The 6.2L V-8 is the most power engine offered in
any light-duty pickup truck, with SAE-certified 420 horsepower (313 kW) and 460
lb-ft of torque (623 Nm). It is available with SLT and Denali, and matched with
the 8L90 eight-speed transmission.
At the heart of the EcoTec3 engine family is an
advanced combustion system that maximizes the potential of the direct fuel
injection system, cylinder deactivation, continuously variable valve timing and
other technologies. The ability to more precisely control combustion also
enables the engines to run with a higher compression ratio – 11.0:1 for the
versions with regular fuel recommended. Higher compression is one of the best
ways to simultaneously boost power and efficiency.
In the U.S. and Canada, the 4.3L and 5.3L engines
are matched with the Hydra-Matic 6L80 six-speed automatic transmission, while
the 6.2L is matched with the all-new 8L90 eight-speed automatic.
The GM-developed Hydra-Matic 8L90 is roughly the same size and weight as
the 6L80 six-speed automatic. Its 7.0 overall gear ratio spread is wider than
GM’s six-speed automatic transmissions. That provides a numerically higher
first gear ratio, helping drivers start off more confidently with a heavy load
or when trailering. The 8L90 also enables numerically lower rear axle ratios,
which reduce engine rpm on the highway.
The Sierra 1500 was engineered to deliver great
capability with great refinement, with a quiet, controlled ride, great steering
and braking feel – attributes that provide driving confidence when using the
truck’s capability to its fullest.
boxed frame with the main rails and major cross members formed from
high-strength steel provides a rigid base for maximum hauling capability, great
noise and vibration isolation and excellent crashworthiness. The stiff chassis enables more precise tuning
of the front and rear suspensions, for a more responsive feel with smoother
performance and less vibration and shake, particularly on harsh terrain.
The 2015 Sierra
benefits from a half-inch wider rear track and half-inch wider wheels
introduced on the redesigned 2014 models to enhance stability and ride
smoothness. The new geometry also contributes to flatter, more
confident-feeling cornering whether the truck is empty, loaded or trailering.
The wider wheels reduce tire flexing and new-design twin-tube shock absorbers
at all corners improve low-speed damping for a smoother, more controlled ride.
1500 models – 2WD and 4WD – feature a coil-over-shock independent front
suspension design, with forged aluminum upper control arms and cast-aluminum
lower control arms on select models. They are 23 pounds lighter and 10 percent
stiffer than comparable steel components.
Hotchkiss-type axle/rear suspension design delivers the load-sharing strength
and flexibility that truck owners have relied on for decades. A lineup of more
robust axles is used with two-stage, semi-elliptical multi-leaf springs,
complementing the higher-torque powertrains to deliver maximum strength under
load. It includes:
- An 8.6-inch axle with V-6 models offered with
a 3.23 ratio in 2WD models and a 3.42 ratio with 4WD
- A larger, 9.5-inch axle is used with 5.3L. A
3.08 ratio is standard with the 5.3L and a 3.42 ratio is standard with the
6.2L and optional with the 5.3L
- A high-capacity 9.76-inch axle is matched with
6.2L-equipped models and is part of the available Max Trailering Package.
For owners whose work or
recreation takes them off road, the Z71 Off Road package that’s part of the All
Terrain package mixes aesthetic cues with greater capability, including 46mm
monotube Rancho shocks, front tow hooks, a transfer case shield on 4WD models
and standard 18-inch wheels with all-terrain tires. Twenty-inch wheels and
all-terrain tires are also available.
Additional standard and
available chassis and suspension features:
- Hill descent control is engaged by the driver and uses the
anti-lock braking system to enable a smooth and controlled descent in
rough terrain. It is standard with Z71-equipped All Terrain models and
available on other models.
- Automatic locking rear
differential reacts in milliseconds
in low-traction situations to improve safety and confidence on wet, snowy
or muddy surfaces. Without driver input of any kind, the rear axle engages
when a wheel speed difference of 100 rpm or more is detected between the
left and right wheels, providing instant traction for confident driving.
During normal driving conditions, the differential functions as a
conventional light-bias limited-slip axle. It is standard with the All
Terrain and available on other models (included with Max Trailering
variable-assist power steering is standard on all models. It reduces steering effort at low speeds.
Because there is no engine-driven pump, electric power steering also saves
fuel and eliminates the maintenance associated with hydraulic power
- Four-wheel disc brakes. The large,
vented front brake rotors measure 13 inches in diameter and are
complemented by 13.6-inch rear rotors. An enhanced brake vacuum pump
introduced in 2014 improves braking capability through greater brake system
boost, while the brake pedal assembly itself is lighter, for a more
uniform, linear feel throughout the entire pedal travel range.
- Duralife™ brake rotors that offer up to double the service life. A GM-exclusive process
protects against rust that, over time, can lead to steering wheel shudder.
It involves super-heating the rotors to more than 1,000 degrees F (560 C)
for an entire day in a special oven, where the nitrogen-rich atmosphere
promotes nitrogen atoms to bond to the rotors’ surfaces, hardening and
electronic stability control system is standard on all Sierra 1500 models,
working in concert with the new four-wheel-disc brake system and
four-channel ABS to provide more precise and controlled ABS stops, greater
traction and excellent cornering stability. It also incorporates rollover
mitigation technology, which anticipates tip-up conditions – such as
fishtailing – on a flat road surface and rapidly applies brake pressure to
help reduce the likelihood of a rollover.
sway control is
also standard and works with StabiliTrak to provide an added measure of
confidence when towing a trailer. It senses conditions of trailer sway
and, without input from the driver, intervenes with braking and/or reduced
engine power to bring the trailer under control and keep it on its
intended path. The system will use electric trailer brakes when a trailer
is plugged into the standard wiring harness.
trailer brake controller and hill start assist are two more solutions that
help owners do their work with greater confidence and less hassle. The
trailer brake controller allows the driver to adjust the amount of output
available to the electric trailer brake and to manually apply the brakes.
With hill start assist, the brakes hold for about 1.5 seconds on grades of
5 percent or greater when the driver takes his or her foot off the brake
pedal, preventing rollback for a more confident take-off on hilly roads or
terrain – especially with a trailer.
The Max Trailering Package is available on 2WD and 4WD V-8
crew cab and double cab models and includes a 9.76-inch rear axle, heavy-duty rear springs,
revised shock tuning for increased control, enhanced cooling and an integrated
trailer brake controller. Also included is the G80 locking rear differential, a
trailer hitch and bumper-mounted four- and seven-pin connectors.
The 2015 Sierra’s safety systems incorporate
technologies designed to protect the driver and passengers before, during and
after a collision.
The available Driver Alert package, offered on
Sierra Denali, regular cab SLE and double cab/crew cab SLT models, helps
drivers avoid crashes with lane departure warning, forward collision alert and
the segment-exclusive safety alert seat. Front and rear park assist is also
included with the package on SLE and SLT (it is standard on Denali).
Forward collision alert tracks the vehicle ahead using a forward-facing
camera and a three-step visual and sound alert, while the safety alert seat, uses
directional vibrations to warn of crash treat. Lane departure warning
technology alerts the driver when the truck drifts over a lane line when
traveling at least 35 mph.
In the event of a crash, standard occupant
protection features include:
Three-point safety belts in in all rear seating
Front outboard safety belt retractor pretensioners
that automatically reduce slack in the shoulder belts, helping to keep
occupants upright and reduce forward movement
Energy management system retractors that gradually
let out the front outboard pretensioned safety belt to manage occupant energy
and limit forces to the occupant in a frontal collision
Six standard air bags and 360-degree sensor system,
Dual-stage frontal air bags work with the safety
belts and deploy in one or two levels to help reduce injury to the driver and
outside front passenger in certain frontal collisions. A Passenger Sensing
System helps detect the presence of a properly seated front passenger and
determine if the frontal air bag should be allowed to inflate
Head-curtain side-impact air bags with rollover
protection deploy from the roof rail area for outboard passengers
Seat-mounted side-impact air bags help protect the
chest and pelvic regions of the driver and outside front passenger in a side-impact,
absorbing as much crash energy as possible
LATCH system helps customers properly install a
child seat using a top tether anchor and two lower anchors located between the
seat cushion and seatback.
Additionally, StabiliTrak electronic stability control with rollover mitigation
technology, trailer sway control and hill-start assist are standard. A
rear-vision camera is standard on SLE, SLT and Denali.