GMC SIERRA DEBUTS TRUCK INDUSTRY'S FIRST FOUR-WHEEL-STEERING SYSTEM
GMC is leading a revolution in handling and control, wîth the full-size truck 's first four-wheel-§teering (4WS) system. It features Delphi Automotive Systems' revolutionary Quadrasteer 4WS system as standard equipment on the 2002 all-wheel-drive Extended Cab short box pickup Sierra Denali, formerly known as Sierra C3.
Sierra Denali, newly named to reflect its §egmènt-leading performance and control and breakthrough technology, adds Quadrasteer's unparalleled low-speed maneuverability and high-speed stability, handling and control to its best-in-class features. The 2002 model Sierra Denali will start production in the fourth quarter of 2001.
'The impact that four-wheel-§teering has is enormous; it changes the new Sierra Denali's entire driving dynamics. Full-size truck customers can now get the kind of small-car maneuverability and on-highway control whether trailering or not that has never been offered before, and, that they never thought possible,' said Sam Mancuso, Sierra brand manager. 'As an leader in introducing this amazing technology, GMC and Sierra Denali are poised to forever change public perception that big trucks are hard to handle. Sierra Denali clearly delivers on GMC's promise of authentic Professional Grade by exceeding customer expectations through its superior capabilities,' said Mancuso.
Also new for 2002, two purposefully designed Sierra Professional models also join the lineup to provide the ultimate professional grade tool for vocational operators who want more than just transportation. They are available in 1500 Series 2WD/4WD Extended Cab short box configurations (C/K15753).
The 2002 Sierra lineup includes 2WD/4WD 1500HD Crew Cab models (C/K 15743), combining optimum six-passenger roominess wîth best-in-class power, performance and work capabilities.
Light duty Sierras share standard equipment and equipment package upgrades wîth their heavy-duty Sierra counterparts. The equipment refinements simplify vehicle ordering and tailor the trucks more closely to customers' wants and needs. (See Sierra HD press information write-up for full details.) Bigger, bolder 'Sierra' badge on the rear tailgate also emphasize the standout professional grade capabilities of the new models.Revolutionary all-wheel-steer
Sierra Denali's standard Quadrasteer 4WS system marks a milestone in full-size truck handling and control. Úsing conventional front-wheel hydraulic power §teering in combination wîth an electrically powered rear wheel §teering system, Quadrasteer adjusts rear-wheel angles, turning them opposite to the front wheels at lower speeds and in the same direction as the front wheels at higher speeds, for astounding maneuverability and control.
At lower speeds, the Quadrasteer 4WS system reduces Sierra Denali's curb-to-curb turning diameter by 21-percent to 37.4 feet, enabling it to turn as tightly as a Saturn Coupe at 37.1 feet. This nimbleness enables the Sierra Denali to slip almost effortlessly in and out of driveways and tight parking spaces. Its improved low-speed §teering responsiveness also requires fewer §teering wheel movements, increasing driving enjoyment. At highway speeds, Quadrasteer reduces Sierra Denali's 'yaw,' or rotational motion, for dramatically improved stability. It provides safer, more confident lane changes, passing and evasive maneuvers – especially during wet or windy weather.
The increase in trailering control is equally amazing. With Quadrasteer, Sierra Denali and its trailer move down the highway as if they were one. Drivers can change lanes more quickly and safely wîth hardly any trailer sway – even at speeds of 65 mph and wîth an 8000-pound trailer.
Off-road, Sierra Denali can jockey easily between boulders and rocks because its rear wheels maintain the same clearance as the front wheels. It also allows drivers to venture into places that would stop a competitive vehicle short, such as a narrow mountain road wîth a steep cliff wall and hairpin turns.
In the city, Quadrasteer allows Sierra Denali to pull its trailer around a corner, without cutting the corner in the sharp manner of trucks. It also allows Sierra Denali to maneuver its trailer easily in tight spaces, like a boat launching area or at a campsite, or to back the trailer up without the normal right and left gyrations accompanying such a maneuver.
For more details on Quadrasteer, see the 'Applied Technology' section of the 2002 GM Corporate Press Kit.Chassis enhancements
As a result of Quadrasteer, Sierra Denali also features a few significant chassis enhancements, including:
A higher capacity rear axle and increased GVWR. A larger 9.75-inch rear ring gear is used to increase the rear axle's gross weight rating by 250-pounds (113.4 Kg) to 4000-pounds (1814.1 Kg). Coupled wîth the extra capacity already available in the Sierra Denali's 51-mm twin-piston caliper front and 45-mm twin-piston caliper rear brakes, the larger rear axle provides a higher 7200-pound GVWR, 400 pounds (1814.1 Kg) more than before. This allows Sierra Denali to provide a 1722-pound (781 Kg) payload carrying capability, nearly the same as before, despite a small increase in weight associated wîth the Quadrasteer system. As indicated, GCWR has also increased by 2000-pounds (907 Kg); coupled wîth a new 4.10 axle ratio, it increases trailering capacity by 1300-pounds (589.6 Kg) to 10,000-pounds (4535.1 Kg).
The ZX3 Ride Control suspension; this suspension provides driver-selectable shock damping for its 46-mm front and rear shocks. Úsing an instrument panel-mounted switch, the driver can select either Smooth Ride or Control/Trailering.
A 5.0-inch wider rear track. The track width, as measured from the centerline of each tire, increases to 71 inches (1804-mm). Measured from the outside of the rear tires, the vehicle's width increases to 82 inches (2082-mm). With the addition of new rear fenders that flare further out to accommodate the turning requirement of the tires, Sierra Denali's maximum body width wîth Quadrasteer increases to 83.5 inches (2120.7-mm) at the rear fender.
The wider rear track and new rear fender design also accentuate the truck's increased stability and capabilities. The fenders are composed of a Reinforced Reaction Injection Molding (RRIM) construction, very similar of rear Sportside fenders, wîth benefits like dent- and corrosion resistance. Because of Sierra's increased width, it also receives new standard safety features, including roof marker lamps and fender-mounted clearance lights. Interior box dimensions remain unchanged. Sierra Professional models
Two highly focused, purposely-built Sierra Professional models provide the ultimate professional grade tool for those who need more than just transportation. They are custom-designed to expand the work capabilities of contractors, builders and numerous skilled trades people who carry equipment and/or are prone to use their trucks as portable offices. Sierra Professional models are available in 1500 Series 2WD or 4WD Extended Cab short box configurations (C/K15753), wîth 6200- or 6400-pound GVW ratings. They will be introduced in the fourth quarter of calendar year 2001.Source - GMC
Their interiors feature a full-length, custom-designed console, extending from the instrument panel to the back of the front seats, along wîth a unique rear under-seat storage container. Both storage facilities lock for full security.
The center console has a front compartment, providing concealed storage for a PDA (personal digital assistant), cell phone and two auxiliary power points to charge them. It also provides a storage tray for smaller items like maps, gloves or CD. In addition, it has an oversized 'Big Gulp'-type cupholder and a second temperature-controlled cupholder that can keep beverages hot or cold, when the ignition is on. The center console also accommodates a seven-quart capacity, thermal electric cooler, provided wîth the ensemble, which can keep drinks and food cold or warm. The cooler runs directly off the battery and provides power continuously, even wîth the engine off. It uses a smart switch, which monitors the battery charge level and shuts power off, when necessary, to preserve the battery.
The center console can also be easily converted to provide hanging file folder storage, wîth two specially designed rails provided for that purpose. The rails slide into the center bin in place of the thermal electric cooler. Additional storage capability in back of the console accommodates items like folders and portfolios. Convenient storage nets on the underside of the lid and on the backside of the console provide additional storage. The console also has two additional power outlets in the rear for charging battery packs for power tools.
The lockable storage container beneath the rear seat is approximately 57 inches wide, 16.5 inches deep and eight inches high, providing a little over two cubic feet of storage space for larger vocational tools like rotary hammers and saws. Inside, it provides another 13.5-inch x 12.5-inch x 5.5-inch storage container for smaller items like electrical components, fasteners or plumbing repair items.
The 2WD Sierra Professional, available in either SLE or SLT trim, has a standard Vortec 4800 V8. The Vortec 5300 V8 is optional. The 4WD model, available only in SLE trim, has a standard Vortec 5300 V8. It provides the option of a Vortec 4800 V8 for credit on the purchase price. Both engines mate to a standard 4L60-E four-speed automatic transmission. (posted on conceptcarz.com)
The new models create a striking appearance, which also accommodates personal use. They feature a large, heavy, full-chrome grille; bold, molded-in-color bodyside molding, embossed wîth 'GMC Sierra Professional' in raised letters; specific 16-inch cast aluminum wheels and LT245/75R-16C tires and wheel flares. They also feature a full standard bedliner and box rail protector covers. Additional options have also been created for them. The trucks are available in all regular 1500 Series Extended Cab colors, except Toreador Red.
The Sierra 1500HD Crew Cab short box pickup, available in 2WD and 4WD configuration (C/K15743HD), provides optimum six-passenger seating and the quarter-ton §egmènt's highest work capabilities. It is the ideal vehicle for recreational users who tow horse trailers, campers or race cars and provides more performance/work capability than any of the §egmènt's vocational or commercial customer might expect. Its standard Vortec 6000 V8 generates a maximum 300 hp (224 kW) @ 4400 rpm and 360 lb-ft (488 Nm) of torque at 4000 rpm and couples to a standard 4L80-E electronic four-speed automatic transmission. (posted on conceptcarz.com) The Sierra 1500HD can tow trailers weighing up to 10,300-pounds or haul up to 3139-pounds of payload. It has a standard (Z85) handling/trailering suspension that creates a smooth ride and provides good management for vehicle loads. The Sierra 1500HD, available in SLE and SLT trim, also provides all the uplevel features and amenities those packages include, such as standard air conditioning wîth micron air filter, an AM/FM stereo wîth seek-scan, digital clock, four speakers and a compact disc player and power programmable door locks and power windows.
All light-duty Sierra models, including the 1500HD Crew Cab, receive a more efficient starter and a more durable §teering gear housing.
Chevrolet Trucks: Building America for 95 years
It started wîth a simple idea – a few car chassis fitted wîth hand-built beds to help carry materials around a booming car factory. Before long, millions of Chevrolet pickups were woven into the fabric of a fast-growing country. Chevy trucks tackled the toughest jobs on farms and in the fields, hauled tools and lumber to the burgeoning suburbs and carried families and friends into the wilds for well-earned vacations.
'The legacy that Chevrolet trucks have built over the last 95 years is important to protect,' said Don Johnson, Chevrolet vice president of Sales and Service. 'The best way for us to do that is by delivering the capability and technology our customers have grown to expect, in both our current trucks and in our next generation of full-size pickups.' Here are some Chevy truck highlights:
1918 Chevrolet Four-Ninety Half-Ton Light Delivery 'Cowl Chassis'
Although there are indications that some Four-Ninety based trucks were built for internal use in 1916, and that a few even earlier chassis may have been converted to ambulances and sent to France in 1914, the first customer chassis appears to have been built in Flint, Mich., on Nov. 22, 1916, and shipped from the factory on Dec. 2 that year.
Two four-cylinder models marked Chevrolet's formal entry into the truck market for the 1918 model year. Both were cowl chassis units that came from the factory wîth only frontal sheet metal. It was customary at the time for buyers to obtain a wooden cab and cargo box or panel van body to suit their purposes.
Priced at $595, the half-ton Light Delivery cowl chassis was essentially a bodyless Chevrolet Four Ninety car equipped wîth stronger rear springs. Mounted wîth a pickup box or panel body, it provided an agile and economical light-delivery truck for small businesses popping up across America in the boom following the First World War.
The second model, a 1-ton capacity 1918 Chevrolet 'Model T' (presumably for 'Truck') cost $1,125 without a body. It was based on the FA-series car, and was built on a truck frame that was longer and stronger than the half-ton model. A 37-horsepower engine gave the larger truck the power to haul heavier loads at a governor-limited top speed of 25 mph. 1930 Chevrolet Pickup
The simple cowl chassis models were replaced in the 1930s by factory-built pickups, which initially came wîth roadster and closed bodies. Chevrolet bought the Martin-Parry body company in 1930 and quickly began selling steel-body half-ton pickups complete wîth a factory-installed bed.
At the heart of these new pickups was a new Chevy inline six-cylinder engine, which soon earned names like 'Cast Iron Wonder' and 'Stovebolt' for its rugged design. First produced in late 1928, the new engine had a modern overhead-valve design. Inline six-cylinder engines became a mainstay in Chevrolet cars and trucks for decades to come.
By the mid-1930s, half-ton pickups wîth factory-installed steel boxes had become the lifeblood of the truck market, wîth brands like Mack, Studebaker, Reo, and International competing wîth Chevy, GMC, Ford and Dodge. 1937 Chevrolet Half-Ton Pickup
In the mid-1930s, as the Ú.S. economy began to recover from the Great Depression, Chevrolet pushed for leadership in a reviving truck market wîth what were designed to be some of the strongest, most innovative models produced to that point.
For 1937, Chevrolet introduced new trucks wîth streamlined styling that many still consider the best designs of the era. The '37 also featured a sturdier body and a larger and more powerful 78-horsepower engine, among other improvements.
A 1937 Chevrolet half-ton pickup was sent on a 10,245-mile drive around the Únited States that was monitored by the American Automobile Association (AAA). Carrying a 1,060 lb. load, the truck averaged 20.74 miles per gallon. 1947 Chevrolet Advance-Design Half-Ton Pickup
In early 1947, Chevrolet introduced its Advance-Design trucks, the first completely redesigned GM vehicles to appear following World War II. Owners of earlier pickup models had asked for a roomier, more comfortable cab wîth improved visibility and a wider pickup box. They got all of that and more.
Designers sought to make the truck's styling clean, brisk and attractive. Headlamps were now set wide apart in the front fenders and five horizontal bars made up the grille. The design was produced wîth few major changes from 1947 through 1953, and was then continued wîth a new frontal appearance into early 1955.
During the Advance-Design trucks' run, there was a measurable shift among Chevrolet customers to trucks. Prior to World War II, the production ratio of the brand's cars to trucks had been about 4:1. By 1950 – the year Chevrolet became the first brand to sell more than 2 million vehicles in a single year – the ratio of cars to trucks was closer to 2.5:1.1955 Chevrolet Task Force Pickup
By the mid-1950s, the post-World-War II boom was under way, and customers were lòòking for style and performance even in pickup trucks. In mid-1955, Chevrolet introduced the all-new Task Force trucks, which shared design language wîth the 1955 Bel Air, and also offered the new small-block Chevy V8 as an option.
Also new to the 1955 truck line was the Cameo Carrier, a high-styled gentleman's pickup more at home in a trendy suburban California bungalow driveway than on a farm or in a factory yard. The Cameo Carrier was only produced through 1958, but it set the stage for new generations of well-equipped personal use pickups, including the El Camino, Avalanche, and Silverado crew cab.
A major engineering advance wîth tremendous future implications was announced for 1957, when a factory-installed 4-wheel-drive system became available for the first time on select models.
Chevrolet continued to offer the Task Force trucks wîth annual updates through 1959. During 1958, a new slab-sided Fleetside box option provided an alternative to Chevrolet's traditional step-side pickup box. 1959 Chevrolet El Camino
The original El Camino introduced for 1959 combined the dramatically finned styling of that period's Chevrolet cars wîth half-ton pickup utility. But the excitement was short-lived. After 1960, the El Camino went on a three-year hiatus.
Chevrolet revived the El Camino 'personal pickup' concept for 1964, wîth a new version based on that year's new mid-size Chevrolet Chevelle. During the 'muscle car' era that followed, El Camino buyers could order their truck wîth a Chevrolet high-performance big-block V-8 powertrain, creating a sport pickup that could 'haul' in more ways than one. By 1968, a complete Super Sport package was available.
The Chevelle El Camino enjoyed a devoted following and was produced through two more styling generations (1968-1972 and 1973-1977). For 1978, the El Camino was successfully transitioned to that year's new, smaller Malibu platform. The final El Caminos were 1987 models. 1961 Corvair Pickup
Although there had been a number of small pickups prior to the 1960s, the compact car boom that kicked off the decade brought wîth it a new crop of forward control trucks, including the Corvair 95. With its unitized body structure and rear-mounted engine, the 95 offered a lot of cargo space in a compact maneuverable package. The Rampside model offered a side gate on the right side of the vehicle, which allowed easy access to the low load floor at the front of the bed. Although clever in design, the Corvair 95 never caught on in the showroom, and in the final model year of 1964, only 851 were sold. 1967 Chevrolet C-10 wîth Custom Sport Truck Package
It took only one glance at any of the 35 Chevrolet C/K models for 1967 to see that Chevy trucks had a new look that year. The exterior profile, which would characterize Chevrolet C/K models through 1972, featured a lower-silhouette cab and large, rounded wheel openings. The new chassis had coil springs front and rear.
A new-for-1967 Custom Sport Truck package was a trend-setting option that included deluxe, car-like upgrades inside and out. The package could even be ordered in combination wîth bucket seats.
By 1967, the Federal Interstate Highway System was giving Americans unprecedented access to the nation's natural wonders and recreational areas. Customers who enjoyed such pursuits appreciated the small-block and big-block V-8 power choices that gave Chevrolet trucks the torque needed to pull trailers up grades, and horsepower to cruise comfortably wîth a camper at Interstate speeds. 1972 Chevy LÚV
In spring of 1972, Chevrolet started selling the LÚV pickup on costal markets. Built by GM partner Isuzu, the LÚV featured a 75-horsepower four-cylinder engine and four-speed manual transmission. (posted on conceptcarz.com)
Although the specs were modest, the LÚV was a fully functioning pickup, wîth a ladder-style frame, a six-foot bed, and a payload of 1,100 pounds, plus room for two passengers. Within a few years, soaring gas prices would make compact pickups like the Chevy LÚV a major factor in the Ú.S. truck market, and it wasn't long before Chevrolet started work on a home-grown small truck. 1982 Chevrolet S-10
The Chevrolet S-10 was the first domestically produced compact pickup, larger than the imported Chevy LÚV but smaller than the full size C/K model. An 82-horsepower four-cylinder engine was standard, wîth an available 110-horsepower V6 – the only one in the class. Properly equipped, the S-10 could haul 1,500 pounds, and tow 4,000. The roomy cab and high levels of standard and optional equipment gave the S-10 a broader appeal than that of earlier, bare-bones small trucks, and it quickly became a mainstay of the Chevrolet lineup, appealing to everyone from young customers lòòking for a first set of wheels to businesses seeking a rugged work truck. 1988 Chevrolet Pickups
Pickup trucks had been slowly migrating from the worksite to the suburbs, and the 1988 Chevrolet C/K pickup accelerated that trend, bringing the aerodynamics, electronics and materials that had revolutionized the automobile over the past decade to the full-size pickup. Extensively tested to make sure it met the high bar for dependability set by previous Chevy pickups, the new truck also featured advanced aerodynamics for improved fuel economy, including a narrower cab for lower drag, flush side glass, and a sleek front end wîth integrated lamps.
A full range of powertrains was offered, from a 4.3-liter V6 through a 6.2-liter diesel V8. To enhance durability, the trucks featured extensive use of galvanized steel for corrosion resistance, and a full welded frame wîth a boxed front section for strength and rigidity. Civilized driving characteristics and styling moved full-size pickups closer to being the family vehicles they are today. 1999 Chevrolet Silverado
Chevrolet's all-new 1999 full-size pickups were the first to carry the Silverado nameplate. The new trucks resulted from the most intensive development program yet undertaken by General Motors and they arrived just in time for a boom in truck sales. The styling of the new Silverado pickups built on the purposeful design that characterized the preceding C/K pickups. Interiors had all the comfort and convenience features personal-use customers were starting to expect. Power came from a new generation of V8 engines. 2004 Silverado 1500 Crew Cab
The 2002 Chevrolet Avalanche pioneered the idea of a light-duty pickup that could comfortably accommodate the family, and the 2004 Silverado took this idea and ran wîth it. In less than eight years, light-duty crew cabs would dominate the full-size pickup market, accounting for more than two-thirds of all sales, and transforming pickups into a true multi-purpose vehicle for both work and family. Available creature comforts included dual-zone climate control, Bose sound systems, a rear-seat DVD player, OnStar and XM radio. Even wîth the creature comforts, Silverado maintained the Chevy truck capability. 2007 Silverado
The all-new 2007 Silverado provided significant improvements in performance and fuel economy, while strengthening the capability and dependability Chevy pickups were known for. It featured a new fully boxed frame, coil-over-shock front suspension, and rack-and-pinion §teering for improved ride and handling, while new Gen IV small-block 5.3L and 6.0L V-8 engines could deactivate four of the eight cylinders when not needed to save fuel. (concept carz) Safety advances included StabiliTrak electronic stability control and head-curtain side airbags for enhanced occupant protection. 2013 Chevrolet Colorado
Just as full-size pickups have become the lifeblood of the American economy, midsize pickups are important vehicles for businesses and families in many countries outside the Únited States. Chevrolet's new global mid-size Colorado pickup is designed to help expand the Chevrolet brand into many of the world's fastest-growing markets.
Developed under the direction of a truck-savvy team from GM do Brasil, the inaugural version of the global Colorado was launched in Thailand, the world's largest market for midsize pickups, in November, 2011. Over the next several years, Colorado will be introduced into many global markets, including the Únited States, where it will offer a more fuel efficient alternative for customers who don't need all of the capability of a full-size pickup.Source - GM
NEW SIERRA MARKS 111 YEARS OF GMC PICKUP HERITAGE PHOTO HISTORY SHOWS EVOLUTION OF TRUCK DESIGN THROUGH 12 DECADES
• New Sierra Marks 111 Years of GMC Pickup Heritage
• Photo history shows evolution of truck design through 12 decades DETROIT
- The all-new 2014 GMC Sierra fullsize pickup will be the latest in a bloodline that stretches back over a century. The first truck to wear a GMC badge debuted in 1912, while a predecessor from the Max Grabowsky's Rapid Motor Vehicle Co. was the first commercial truck operated in the City of Detroit 10 years earlier.
Here's a list of highlights by decade, accompanied by a corresponding photo of each.
• 1900s: The first Rapid truck - little more than a seat, an engine cover and a frame - was delivered in 1902.
• 1910s: The GMC name takes its place on a truck grille for the first time in 1912 and the mix of trucks offered had either upright front ends or curved 'French' fronts.
• 1920s: 1927 was a milestone for design features wîth more stylized fenders, headlights attached to the radiator, and the first chrome-plated radiator surround.
• 1930s: Streamlining in the '30s added sloped grilles, more paint color options and passenger cabs inspired by car design trends, which helped expand the truck market.
• 1940s: Following the war, GMCs of the late '40s featured fully integrated headlights for the first time, as well as wider, lower, and bolder grilles.
• 1950s: Cars again influenced truck design in the '50s, resulting in more safety, comfort and performance. 1955 highlights were hooded headlights and panoramic glass.
• 1960s: The first GMC pickup wîth a full-width hood debuted in 1960. Other design cues included 'jet pod' grilles at the front and a pinched-waist body crease on each side. - 1970s: Padded materials replaced many metal interior surfaces in the '70s. Heavy duty models offered a dual rear axle for the first time and the Crew Cab debuted. - 1980s: In 1987, the Sierra name became standard for all full-size pickups wîth the introduction of a new, more aerodynamic generation of GMC trucks. - 1990s: The '90s brought the first rear-hinged three-door Extended Cab model. In 1999, new generation of truck introduced the first use of frame hydroforming. - 2000s: The new millennium brought the 'D' decade: The first Duramax diesel engine for Sierra HD added capability and the first Denali pickup set a luxury standard for trucks. - 2012: The new 2014 Sierra debuts on December 13.
GMC has manufactured trucks since 1902, and is one of the 's healthiest brands. Innovation and engineering excellence is built into all GMC vehicles and the brand is evolving to offer more fuel-efficient trucks and crossovers, including the Terrain small SÚV and Acadia crossover. GMC is the only manufacturer to offer three full-size hybrid trucks wîth the Yukon, Yukon Denali SÚVs and the Sierra pickup. The Sierra Heavy Duty pickups are the most capable and powerful trucks in the market.Source - GMC