GMC Sierra HD, 2015

 

 

 GMC Sierra HD, 2015

The designed to deliver class-leading capability with enhanced comfort and smarter technologies, the new 2015 GMC Sierra HD lineup advances a 111-year legacy of professional heavy-duty trucks.

The new Sierra HDs arrive in the first quarter of 2014, including 2500HD and 3500HD models, and the Sierra Denali HD, which matches do-it-all capability with an exclusive package of design and upscale interior amenities.

Segment-leading capabilities across the range include the highest payload - 7,374 pounds - and the highest conventional trailering rating - 19,600 pounds. The maximum fifth-wheel trailering rating is 23,200 pounds. Gas and Duramax diesel powertrains are offered, including a bi-fuel option that pairs the gas engine with a compressed natural gas system.

Bold styling and an all-new, more comfortable and technology-infused interior are carried forward from the 2014 Sierra 1500, including new double cab and revised crew cab body styles. Larger rear doors on each, along with new seat designs, enable easier entry and exit from the rear seat and two inches of additional legroom on crew cabs.

The new interior is also designed to help drivers and passengers whether they're on the job or on a weekend getaway, with easier-to-reach, more intuitively located controls, more storage compartments, more plug-ins for electronic devices and the latest-generation GMC Intelli Link infotainment system - with an eight-inch-diagonal color touch screen.

Additional new and enhanced features for the 2015 GMC Sierra HD lineup:

• Corner Step rear bumper, EZ Lift and Lower tailgate, standard upper tie-downs and other features that make cargo handling easier
• Standard Stabili Trak with Trailer Sway Control on all models, including 3500HD dually
• Integrated cruise control, auto grade braking and diesel exhaust braking (diesel models), for greater driving control and reduced brake wear on grades
• Enhanced cooling airflow, which enables the Duramax turbo diesel and 6.0L gas engine to better maintain full power, even under heavy loads and high ambient temperatures
• Latest-generation Intelli Link infotainment system, which offers a variety of connectivity options for devices of all types and available navigation

Sierra Denali HD details
The distinctive Sierra Denali HD features a signature Denali chrome grille, unique interior decorative trim, a polished stainless steel exhaust outlet (gas models) and body-color front and rear bumpers. Complementing the soft-touch instrument panel trim and aluminum trim are Denali-specific interior details, including script on the bright door sills and embossed into the front seats.

Sierra Denali's high-tech interior also features an exclusive eight-inch customizable driver display 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 USB ports.

Other features standard on Sierra Denali include projector-style headlamps with light-emitting diode signature daytime running lights, a Bose audio system, heated and cooled leather front bucket seats, a heated steering wheel and a power sliding rear window with defogger.

GMC Sierra HD design and exterior features
Sierra HD trucks have a new face that conveys GMC's professional grade aesthetic with greater technical precision, including an all-new headlamp and grille design, power-dome hood - with specific badging on Duramax-equipped models - and a one-piece chrome bumper (body-color bumper on Denali). SLT and Denali models feature GMC's signature C-shaped LED daytime running lamps within the headlamp housings.

The new exterior design backs up its bold, advanced styling with efficiency-enhancing functionality. Improved aerodynamics allow the trucks to slip through the air with less drag and reduced wind noise, while the new grille design supports enhanced engine-cooling performance. It enhances efficiency and ensures Sierra HD delivers optimal performance under the toughest conditions, such as towing on a mountain grade.

New inlaid doors, which fit into recesses in the bodyside, help reduce wind noise for a quieter cab, while details including like the roof and tailgate spoiler were tuned in the wind tunnel to smooth airflow over the truck for reduced noise and improved aerodynamic efficiency.

Like the 2014 Sierra 1500, a new double cab body replaces the previous extended cab. It features longer, front-hinged rear doors with outside pull handles at the rear, providing improved access in tight parking spaces. New structural B-pillars were added to add to a solid feel.

Unlike trucks with rear-hinged doors, Sierra's double cab design allows rear passengers to enter and exit the vehicle with the front doors remaining closed. Crew cabs feature resized doors, too, including longer rear doors, which also make it easier to climb in and out of the rear seat.

Approximately 67 percent of each cab is constructed with high-strength and ultra-high-strength steels, used in the A-pillars, B-pillars, rockers and roof rails, as well strategic sections on the interior structure. Ultra-high-strength steel is used in areas of the rocker panels and underbody to help improve performance in crashes.

Cargo box innovations
GMC Sierra HD models are available with 6'6" and 8' box lengths that are stronger and more durable, easier to use and offer greater cargo flexibility. The new CornerStep rear bumper - introduced on Sierra 1500 - is standard. It features integrated steps at each corner designed to accommodate large boots, with textured pads for sure-footed grip.

Sierra HD's boxes also feature four integrated cargo tie-down provisions built into the lower corners and new, standard upper tie-downs. 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.
 

LED cargo box lighting is standard on SLE, SLT and Denali models. Two LED lights are mounted under the box side rails and are activated by a switch on the instrument panel, providing a light source when a tonneau cover is installed or a flashlight isn't available.

The boxes come with a two-tier loading design and offers more than four feet of loading space between the wheel houses, allowing standard 4' x 8' sheets of plywood to stack flatly on the box floor. There is also more than five feet of load space between the box walls. An available, factory-installed spray-in bed liner provides protection for the box floor and walls.

The two-tier design allows customers to insert a platform to separate items during hauling or conceal valuables below, such as power tools. It incorporates resting points at the same level as the tops of the wheel houses - enabling the platform to effectively divide the box into upper and lower sections. There are also built-in provisions for cargo bulkheads to subdivide the box even further.

A wide range of utility-enhancing accessories offered through GMC dealers makes Sierra HD cargo boxes more functional. They include tool boxes, bed liners, bed mats, box nets, ladder racks and more.