• Sign in to follow this  
    Followers 0

    2015 Chevrolet Corvette Gets Eight-Speed Automatic, Rated At 29 MPG Highway


    • The eight-speed automatic comes to the Corvette Stingray for 2015.


    2015 brings a big change for the Chevrolet Corvette Stingray as the six-speed automatic transmission says adiós and the eight-speed automatic says hello. The new eight-speed features a more aggressive first gear ratio and lower rear axle ratio. This allows the 0-60 MPH time to drop from 3.8 to 3.7 seconds and a improved quarter mile time of 11.9 seconds (times are for the Corvette Stingray equipped with the Z51 package).

    Fuel economy also sees a slight bump with Corvette Stingray now getting 29 MPG on the highway. City and combined numbers are still the same (16 and 20 MPG respectively).

    "The Corvette Stingray is a great example of how we are leveraging engineering and technology to improve both efficiency and performance. No other car can match 460 horsepower, 0-60 mph in better than 3.7 seconds, and 29 mpg on the highway," said Mark Reuss, GM executive vice president, Global Product Development, Purchasing & Supply Chain in a statement.

    Source: Chevrolet

    William Maley is a staff writer for Cheers & Gears. He can be reached atwilliam.maley@cheersandgears.comor you can follow him on twitter at @realmudmonster

    Press Release is on Page 2


    8-Speed Automatic Makes Corvette Faster, More Efficient

    DETROIT – The all-new, paddle-shift eight-speed automatic transmission makes the 2015 Corvette Stingray faster and more fuel efficient, with 0-60 acceleration of only 3.7 seconds and an EPA-estimated 29 mpg on the highway.

    "The Corvette Stingray is a great example of how we are leveraging engineering and technology to improve both efficiency and performance," said Mark Reuss, GM executive vice president, Global Product Development, Purchasing & Supply Chain. "No other car can match 460 horsepower, 0-60 mph in better than 3.7 seconds, and 29 mpg on the highway."

    The Stingray's 0-60 performance is 0.1-second quicker than the previous six-speed automatic, contributing to a quicker quarter-mile elapsed time of 11.9 seconds – a 0.1-second improvement over the six-speed auto.

    Its 29-mpg highway rating represents a 3.5-percent increase over the six-speed. New eight-speed models are EPA-rated at 16 mpg in the city and 20 mpg combined.

    In fact, the Stingray's stingy fuel consumption on the highway is not only better than sports car competitors such as Porsche 911 Carrera (28 mpg), Audi R8 V-8 (20 mpg), Jaguar F-Type R (23 mpg) or Nissan GT-R (23 mpg), it tops conventional cars with smaller engines, like the Subaru Outback six-cylinder (27 mpg), Volkswagen Passat six-cylinder (28 mpg) and Mercedes-Benz C350 coupe (28 mpg).

    The greater performance and efficiency enabled by the available, GM-developed Hydra-Matic 8L90 eight-speed automatic is due primarily to its 7.0 overall gear ratio spread, which enhances off-the-line performance with a more aggressive first gear ratio – 4.60 vs. 4.03 on the six-speed – helping achieve the quicker 0-60 time. It also delivers world-class shift times that rival the best dual-clutch design.

    Combined with a new, numerically lower 2.41 rear axle ratio vs. the 2.56 gear used with previous six-speed automatic models, engine rpm is reduced by 8 percent (123 rpm) on the highway at 70 mph. The lower engine speed reduces fuel consumption. Z51-equipped models retain a 2.73 rear axle ratio.

    The new paddle-shift eight-speed automatic complements the performance generated by the Corvette Stingray's LT1 engine – rated at 455 horsepower or 460 horses with the available performance exhaust system – which uses advanced technologies including direct injection, variable valve timing and Active Fuel Management (cylinder deactivation) to make more power with less fuel.

    Advanced composite materials in the body structure and a lightweight aluminum frame, as well as aluminum and magnesium suspension components, support the Corvette's efficiency with a low curb weight of only 3,298 pounds /1,499 kg (Stingray coupe). They also enhance performance by giving the Stingray an excellent power-to-weight ratio of 7.25 – or one horsepower for every 7.25 pounds of mass. That's better than Porsche 911 Carrera's 8.7 ratio and Audi R8 V-8's 8.3 ratio.

    For those who prefer a traditional manual-shifting driving experience, the 2015 Corvette Stingray is available with a seven-speed manual that delivers 0-60 times of 3.8 seconds and EPA-estimated 29 mpg on the highway.

    0


      Report Article
    Sign in to follow this  
    Followers 0


    User Feedback


    This is awesome, Put this into the V series at least or better yet, have a 9sp or 10sp transmission as the exclusive Cadillac Transmission.

    0

    Share this comment


    Link to comment
    Share on other sites

    epa ratings seem to be $h!. i got 40mpg recently in my mazda 6 with ~120 miles of interstate at ~65 and ~60 miles of highway and ~70 miles of light traffic town driving.

    0

    Share this comment


    Link to comment
    Share on other sites

    epa ratings seem to be $h!. i got 40mpg recently in my mazda 6 with ~120 miles of interstate at ~65 and ~60 miles of highway and ~70 miles of light traffic town driving.

     

    That car indeed is a gem.

     

    I get 22-23 mpg combined (60:40 city:hwy) on my Z06, rated 14-24. I can see the 7 speed crossing the 30 mpg barrier.

    0

    Share this comment


    Link to comment
    Share on other sites

    Never had a GM vehicle that couldn't beat EPA by at least 10% driving at 80-85 mph, or through mountain highways. EPA estimates are quite conservative and GM calculations maybe even more so, unlike some others.

    This Vette should break 30 mpg easy with even the slightest attention paid to driving efficiently.

    0

    Share this comment


    Link to comment
    Share on other sites

    ^^^ I'm pretty sure it is but the best test would be V8 in class versus v8 vs v8 outta class. The Camaro with the same set up would not yield the same result, and would probably be in the 27MPG range. Speaking of which.. That car is gonna surprise the hell out of many when 2016s start showing their numbers. Alpha based, lite, with the LT1 and LT4 set-up is gonna be spectacular. Wouldn't be surprised if the LFX replacement also debuts pretty soon with over 350HP

    0

    Share this comment


    Link to comment
    Share on other sites


    Your content will need to be approved by a moderator

    Guest
    You are commenting as a guest. If you have an account, please sign in.
    Add a comment...

    ×   You have pasted content with formatting.   Remove formatting

    ×   Your link has been automatically embedded.   Display as a link instead

    Loading...



  • Popular Stories

  • Today's Birthdays

    1. §carlet §wordfish
      §carlet §wordfish
      (27 years old)
  • Similar Content

    • By William Maley
      Big November Gains at Chevrolet, Buick, GMC and Cadillac Keep GM the Fastest Growing Automaker
      November U.S. retail market share highest since 2009 Year to Date U.S. Retail Share up 0.5 Percentage Points November Commercial sales were highest since 2008 DETROIT — General Motors (NYSE: GM) sold 197,609 vehicles in November to individual or “retail” customers in the U.S., up 8 percent from last year. Based on initial estimates, GM once again outperformed all full-line manufacturers, led by strong retail sales gains at Chevrolet, Buick, GMC and Cadillac. GM’s November retail sales performance drove GM’s U.S. retail share to its highest November level since 2009.
      Based on initial estimates, GM’s retail market share jumped 0.3 percentage points in November to 16.8 percent.  GM has gained retail market share in 17 of the past 20 months.
      GM’s four U.S. brands posted strong retail sales results in November compared to last year.
      Chevrolet — up 5 percent for its best November since 2004 Buick — up 22 percent for its best November since 2003 GMC — up 9 percent for its best November since 2001 Cadillac — up 17 percent for its best November since 2013 GM’s total U.S. sales in November were 252,644 vehicles, up more than 10 percent from last year.   All four brands outperformed the industry in November with Buick, Cadillac and GMC posting double-digit gains.
      “GM’s November performance reflects the continued strength of our U.S. business.  We gained profitable retail share, commercial and small business deliveries were strong and we commanded the industry’s best average transaction prices,” said Kurt McNeil, GM’s vice president of U.S. Sales Operations. “We are ahead of plan selling down our 2016 model year inventory and we expect to close out December with more retail share growth. GM is heading into 2017 in a position of strength with the planned launch of key new products, like the all-new Chevrolet Equinox, into the heart of the market.” 
      GM’s ATPs, which reflect retail transaction prices after sales incentives, were $35,767 in November, more than $4,000 above the industry average and ahead of last November. 

      Through the first 11 months of the year, GM’s U.S. retail sales were up nearly 2 percent compared to last year. GM gained 0.5 percentage points of U.S. retail market share during that timeframe, the largest retail share gain of any full-line automaker. Year to date, Chevrolet U.S. retail sales are up nearly 3 percent and the brand’s retail share has grown 0.5 percentage points to 11.1 percent. Chevrolet continues to be the U.S. industry’s fastest-growing brand.
      Year to date, Buick retail deliveries have grown more than 5 percent and Buick has gained 0.1 percentage points of retail share.
      GM continues to benefit from a strong U.S. economy and strong retail demand for its products.
      “All economic indicators show significantly improved optimism about the U.S. economy including consumer and business sentiment, which continue to drive a very healthy U.S. auto industry,” said Mustafa Mohatarem, GM’s chief economist. “We believe the U.S. auto industry is well-positioned for sales to continue at or near record levels into 2017.”
      November 2016 Retail Sales and Business Highlights vs. November 2015 (except as noted)

      Chevrolet
      Malibu and Volt were up 24 percent and 25 percent, respectively. Silverado and Colorado were up 5 percent and 39 percent, respectively. Suburban, Tahoe, Equinox and Trax were up 6 percent, 12 percent, 7 percent and 47 percent, respectively. Malibu had its best November since 1997. Silverado had its best November since 2003. Colorado had its best November since 2004. Trax, Volt and Equinox had their best November ever. Tahoe and Suburban had their best November since 2007. 17th straight month of year over year gains for Chevrolet full-size utilities. GMC
      Sierra and Canyon were up 14 percent and 43 percent, respectively. Acadia, Yukon and Yukon XL were up 4 percent, 22 percent and 19 percent, respectively. Brand ATP was at $43,887, the highest November on record. Highest November ever for Denali penetration, at 27.8 percent. Best November ever for Canyon and ninth month of year over year increases. Yukon and Yukon XL had their best November since 2007. Buick
      Regal and Encore were up 41 percent and 35 percent, respectively. 68 percent of sales were crossovers. Best year to date retail performance since 2005. Cadillac
      Escalade was up 24 percent and had its best month of the year. Escalade had its best November since 2007. XT5 had its best month since launch with sales up 12 percent over last month and up 27 percent over the SRX last November, the vehicle it replaced. Year to date ATP was $53,690, the highest ever in Cadillac history Average Transaction Prices (ATP)/Incentives (based on JD Power PIN estimates)
      GM’s ATPs, which reflect retail transaction prices after sales incentives, were $35,767 in November, more than $4,000 above the industry average. In November, GM’s incentive spending as a percent of ATP was 13.7 percent, above the industry average of 12.4 percent. However, year to date, GM’s incentive spending was 11.7 percent, slightly above the industry average of 11.4 percent and well below the incentive spending of its domestic competitors and many of its global competitors. Fleet and Commercial
      Automotive Fleet magazine named Malibu “Fleet Car of the Year”. GM Fleet sales were up 19 percent versus last November. Fleet sales were 22 percent of GM’s sales for the month. Commercial deliveries were up 11 percent for the month and it was the best November Commercial sales since 2008. Malibu Commercial deliveries were up 170 percent versus last November. Small Business deliveries were up 15 percent for the month versus last November, driven by large vans, which were up 93 percent and large pickups, which were up 16 percent versus last November. Federal government sales were up 9 percent versus last November. Rental sales were up 27 percent versus last November but are down 25 percent CYTD, according to plan. GM’s outlook on its daily rental sales mix remains in the 11 percent range of total U.S. sales for 2016 and daily rental sales for the year are expected to be down about 75,000 vehicles. Industry Sales
      GM estimates that the seasonally adjusted annual selling rate (SAAR) for light vehicles in November was approximately 17.9 million units. On a calendar year-to-date basis, GM estimates the light-vehicle SAAR was 17.5 million units.
    • By William Maley
      General Motors will begin importing the Colorado and Silverado pickups into China next year, but you'll only be able to buy them in select markets.
      Automotive News explains that many Chinese cities have bans on pickups for the fear of aggravating air pollution and causing more traffic issues. But earlier this year, the Chinese Government lifted the ban in four provinces - Henan, Hebei, Liaoning, and Yunnan - in an effort to jumpstart sales of domestic pickups. GM sees an opportunity with this and wants to explore it. But there is a major downside to this. Since GM will be importing the trucks, they'll be hit with 25 percent tariff by the Chinese Government.
      Source: Automotive News (Subscription Required), Chevrolet
      Press Release is on Page 2


      Chevrolet to Offer Iconic Silverado, Colorado Trucks for Chinese Consumers
      Brand’s best-selling nameplate and its midsize sibling to go on sale in 2017 GUANGZHOU – Chevrolet announced this evening at an event in Guangzhou that it will make available two classic American trucks – the Silverado and Colorado – in China through parallel import in 2017.
      The Silverado is the best-selling Chevrolet truck in the world. Since its launch in 1987, three generations have been introduced, with cumulative sales of more than 17 million units.
      Powered by an EcoTec3 6.2L V-8 engine mated to an eight-speed automatic transmission, the Silverado delivers peak torque of 624 Nm. It is also equipped with a wide range of smart technologies such as Active Noise Cancellation (ANC), Hill Descent Control (HDC) and Hill Start Assist (HSA), as well as power seats and a Bose® audio system. With its wheelbase of 3,645 mm and length of 5,843 mm, it can handle the toughest jobs expected of a pickup.
      The Colorado was the industry’s hottest-selling product in the U.S. market. It was named the 2015 and 2016 Motor Trend Truck of the Year.
      The midsize pickup offers a combination of refinement, maneuverability and efficiency. Powered by a 3.6L EcoTec V-6 engine, it delivers peak torque of 365 Nm and has a towing capability of 3.1 tons.
      Chevrolet has long been famous for offering the most durable trucks on the market, which embody the charm of freedom while providing an off-road capability. 

      View full article
    • By William Maley
      General Motors will begin importing the Colorado and Silverado pickups into China next year, but you'll only be able to buy them in select markets.
      Automotive News explains that many Chinese cities have bans on pickups for the fear of aggravating air pollution and causing more traffic issues. But earlier this year, the Chinese Government lifted the ban in four provinces - Henan, Hebei, Liaoning, and Yunnan - in an effort to jumpstart sales of domestic pickups. GM sees an opportunity with this and wants to explore it. But there is a major downside to this. Since GM will be importing the trucks, they'll be hit with 25 percent tariff by the Chinese Government.
      Source: Automotive News (Subscription Required), Chevrolet
      Press Release is on Page 2


      Chevrolet to Offer Iconic Silverado, Colorado Trucks for Chinese Consumers
      Brand’s best-selling nameplate and its midsize sibling to go on sale in 2017 GUANGZHOU – Chevrolet announced this evening at an event in Guangzhou that it will make available two classic American trucks – the Silverado and Colorado – in China through parallel import in 2017.
      The Silverado is the best-selling Chevrolet truck in the world. Since its launch in 1987, three generations have been introduced, with cumulative sales of more than 17 million units.
      Powered by an EcoTec3 6.2L V-8 engine mated to an eight-speed automatic transmission, the Silverado delivers peak torque of 624 Nm. It is also equipped with a wide range of smart technologies such as Active Noise Cancellation (ANC), Hill Descent Control (HDC) and Hill Start Assist (HSA), as well as power seats and a Bose® audio system. With its wheelbase of 3,645 mm and length of 5,843 mm, it can handle the toughest jobs expected of a pickup.
      The Colorado was the industry’s hottest-selling product in the U.S. market. It was named the 2015 and 2016 Motor Trend Truck of the Year.
      The midsize pickup offers a combination of refinement, maneuverability and efficiency. Powered by a 3.6L EcoTec V-6 engine, it delivers peak torque of 365 Nm and has a towing capability of 3.1 tons.
      Chevrolet has long been famous for offering the most durable trucks on the market, which embody the charm of freedom while providing an off-road capability. 
    • By William Maley
      It was three years ago that Chevrolet showed off the Colorado ZR2 concept at the LA Auto Show. It was a mean looker with an aggressive look, raised suspension, and meaty off-road tires. Imagine our surprise when Chevrolet revealed the production version tonight in Los Angeles.
      The 2017 Colorado ZR2 keeps the mean look of the concept with a new front end treatment, raised hood, skid plates, 31-inch Goodyear Duratrac tires mounted on 17-inch wheels, and an optional spare tire carrier in the bed.
      But under the skin is where the juicy changes are. Chevrolet has widened the track by 3.5-inches, raised the suspension by 2-inches and equipped it with unique spool-valve dampers from Multimatic - yes the same folks who are being tasked with building the upcoming Ford GT. The dampers first used on the Camaro Z/28, come with six different tuning curves up front, and four in the rear to provide better ride and handling characteristics over different terrains. 
      Engine choices include the 3.6L V6 (308 horsepower, 275 pound-feet) and 2.8L Duramax Turbodiesel (181 horsepower, 369 pound-feet). The four-wheel drive system features a set of electronic-locking differentials for the front and rear axles.
      No word on pricing on when the Colorado ZR2 will arrive at dealers.
      Source: Chevrolet
      Press Release is on Page 2


      New Colorado ZR2 A "Segment of One" Among Off-Road Pickups
      New performance variant of the Chevrolet Colorado excels in tight two-tracks, technical rock-crawling, fast desert running and on pavement LOS ANGELES — Just as introduction of the Chevrolet Colorado reset the bar for mid-size trucks, the new Colorado ZR2 is poised to reset expectations for off-road trucks. Chevy’s new performance halo for the Colorado lineup will feature more off-road technology than any other mid-size pickup when it goes on sale.
      The ZR2 is effectively a segment of one, combining the nimbleness and maneuverability of a mid-size pickup with a host of new off-road features and the most off-road technology of any vehicle in its segment.
      Compared to a standard Colorado, the ZR2 features a much wider track and a lifted suspension. Functional rockers have been added for better performance over rocks and obstacles, and the front and rear bumpers have been modified for better off-road clearance.
      Class-exclusive features include front and rear electronic locking differentials, available diesel engine, and the first off-road application of Multimatic Dynamic Suspensions Spool Valve (DSSVTM) damper technology.
      As a result, the Colorado ZR2 delivers exceptional performance in a variety of scenarios – from technical rock crawling to tight two-track trails to high-speed desert running to daily driving.
      “Our engineers have been incredibly successful developing Corvette and Camaro performance variants with broad performance envelopes,” said Mark Reuss, executive vice president, Global Product Development, Purchasing and Supply Chain. “The ZR2 applies that same philosophy to off-road performance. You can go rock crawling on Saturday, desert running on Sunday, and comfortably drive to work on Monday. This truck can do it all, and do it all well.”
      First off-road application of Multimatic DSSV dampers
      To achieve this unprecedented balance of on- and off-road performance, the Chevy engineering team turned to a surprising partner in creating the ZR2’s dampers, which are the heart of any off-road truck.
      Multimatic Inc., based in Markham, Ontario, is a renowned maker of high-performance Dynamic Suspensions Spool Valve (DSSV) dampers as used in championship-winning motorsport vehicles, including recent Formula One winners.
      The first volume production vehicle to use DSSV dampers was the 2014 Chevrolet Camaro Z/28. The 2017 Chevrolet Colorado ZR2 will be the first application of Multimatic DSSV damper technology to an off-road vehicle.
      “From our experience on Z/28, we knew the performance advantages offered by DSSV dampers, “ said Mark Dickens, executive director, Performance Variants, Performance Parts and Motorsports Engineering, Chevrolet. “We also know that Multimatic’s motorsport development mentality would allow us to bring a uniquely precise and repeatable custom damper to market even more quickly than a traditional damper system.”
      Compared to deflected-disk valving common on most dampers, the ZR2 employs spool valves that offer increased precision and manufacturing repeatability along with enhanced ride and handling performance both on- and off-road.
      The Colorado ZR2’s DSSV dampers are position-sensitive. Their aluminum bodies each house two spool valves providing both compression and rebound damping optimized for everyday driving. During extreme off-road use, a third, piston-mounted spool valve delivers additional, uniquely tuned, compression damping. The front dampers also employ a separate rebound valve, which comes into play when the suspension approaches full extension.
      “A traditional, deflected-disc damper only offers two force-velocity curves for tuning,” Dickens said. “The ZR2 dampers offer six tuning curves for the front, four at the rear. For the driver, this translates to greater confidence and control in a wider range of driving experiences.”
      Design meets mud, sand and rock
      Visually, the production version of the Colorado ZR2 closely resembles the concept shown at the 2014 Los Angeles Auto Show. Consumer response to that concept was so overwhelming, the team knew they needed to carry as much of the original design into production as possible.
      “For both the concept and the production versions of ZR2, the exterior design was shaped by the desire to improve capability driving over mud, sand and rock,” said Rich Scheer, director of design for Chevrolet Truck. “The wider, more aggressive stance, modified front and rear bumpers, and even the bed-mounted, spare-tire carrier all improve performance driving over rough terrain.”
      Compared to a Colorado Z71, the ZR2 has a more aggressive side profile, with the suspension lifted two inches for greater ground clearance. The steel-tube, functional rocker protectors will be standard equipment on the ZR2, and are strong enough to protect the body side while dragging the truck against a rock face.
      The ZR2 also features 17 x 8 inch aluminum wheels, in a pattern exclusive to the ZR2, wrapped in 31-inch Goodyear Duratrac off-road tires for exceptional traction. 
      The front and rear track has been widened by three-and-a-half inches, with new cast-iron control arms for greater durability in off-road situations. As a result, the ZR2 offers greater wheel travel and stability while traversing steep grades.
      The front bumper of the ZR2 has tapered ends, to increase the tire clearance when approaching obstacles. The bumper also integrates a thick, aluminum skid plate protecting the radiator and engine oil pan, while the transfer case is protected by an additional shield. Above the bumper, the ZR2 features a more aggressive grille and hood – with black insert – to complement the other exterior changes.
      A bed-mounted spare tire carrier, seen on reveal vehicles at the Los Angeles Auto Show, will be available as an accessory. “The bed-mounted spare tire adds a rugged look to ZR2, and serves a functional purpose. By relocating the spare to the bed, ZR2’s departure is improved and prevents any damage to the spare when you’re crawling over obstacles,” said Scheer.
      Class-exclusive electronic lockers, available diesel engine
      The ZR2 also features the most sophisticated four-wheel drive system in the segment. With class-exclusive, electronic-locking differentials front and rear and Chevrolet’s AutoTrac transfer case, the ZR2 offers nine drive configurations:
      2WD 2WD, locked rear differential Auto 4WD Auto 4WD, locked rear differential 4WD Hi, locked transfer case 4WD Hi, locked transfer case and locked rear differential 4WD Lo, locked transfer case 4WD Lo, locked transfer case and locked rear differential 4WD Lo, locked transfer case, locked front and rear differentials Extensive work was done to integrate the electronic lockers and allow them to seamlessly interact with the traction control, stability control, and hill-descent control. In addition, a new “Off-Road Mode” button, in combination with the traction control switch, allows the anti-lock brakes, traction control, and stability control calibrations to be tailored to different driving conditions. Off-road Mode also alters the throttle progression and shifts calibrations to give the driver better control and responsiveness.
      The ZR2 shares its powertrains with the 2017 Colorado, and it will be the only extreme production off-road truck to offer the choice of gas or diesel engines.
      The all-new 3.6L V-6, mated to a class-exclusive Hydra-Matic 8L45 8-speed automatic transmission, yields 308 horsepower and 275 lb-ft of torque, while the class-exclusive Duramax diesel engine produces 181 horsepower and 369 lb-ft of torque and will provide excellent range to overland drivers.
      Even with all of the off-roading upgrades over the base truck, the ZR2 can still tow up to 5,000 lbs. – enough to pull a camper, trailer dirt bikes, jet skis, snow mobiles and other toys – or carry 1,100 lbs. of payload.
      As such, the Colorado ZR2 offers a distinct position in the market: Compared to other midsize trucks, the Colorado offers an unrivaled suite of powertrain technologies; compared to full-size off-road trucks, the ZR2 is about a foot narrower and 500 pounds lighter, enabling greater agility over obstacles and better trail access.
      “It’s amazing what a difference a foot of width makes off road,” said Dickens. “The smaller size of the Colorado is a huge enabler for taking the ZR2 more places, and getting it through tighter spots than you could access with a full-size truck.”
      New, off-road development track at GM’s Yuma Proving Ground
      For the development of the Colorado ZR2, Chevrolet developed new off-road test areas at General Motors’ Yuma, Arizona Proving Ground.
      The Yuma Proving Ground is located on 2,400 acres of land in southeastern Arizona. Opened in 2009, Yuma features a range of tracks, laboratories and courses. 
      The new off-road facility features a multitude of off-road simulations, including high-speed desert sand trails; low-speed, loose river rock crossings; and steep, technical hill climbs and descents.
      Yuma Proving Ground’s new off-road course allowed the team to test multiple iterations of components on the ZR2 is a single day. These components were then tested a real-world facilities like Moab, Johnson Valley, and Rubicon to ensure the ZR2 is trail-ready right from the factory.

      View full article
    • By William Maley
      It was three years ago that Chevrolet showed off the Colorado ZR2 concept at the LA Auto Show. It was a mean looker with an aggressive look, raised suspension, and meaty off-road tires. Imagine our surprise when Chevrolet revealed the production version tonight in Los Angeles.
      The 2017 Colorado ZR2 keeps the mean look of the concept with a new front end treatment, raised hood, skid plates, 31-inch Goodyear Duratrac tires mounted on 17-inch wheels, and an optional spare tire carrier in the bed.
      But under the skin is where the juicy changes are. Chevrolet has widened the track by 3.5-inches, raised the suspension by 2-inches and equipped it with unique spool-valve dampers from Multimatic - yes the same folks who are being tasked with building the upcoming Ford GT. The dampers first used on the Camaro Z/28, come with six different tuning curves up front, and four in the rear to provide better ride and handling characteristics over different terrains. 
      Engine choices include the 3.6L V6 (308 horsepower, 275 pound-feet) and 2.8L Duramax Turbodiesel (181 horsepower, 369 pound-feet). The four-wheel drive system features a set of electronic-locking differentials for the front and rear axles.
      No word on pricing on when the Colorado ZR2 will arrive at dealers.
      Source: Chevrolet
      Press Release is on Page 2


      New Colorado ZR2 A "Segment of One" Among Off-Road Pickups
      New performance variant of the Chevrolet Colorado excels in tight two-tracks, technical rock-crawling, fast desert running and on pavement LOS ANGELES — Just as introduction of the Chevrolet Colorado reset the bar for mid-size trucks, the new Colorado ZR2 is poised to reset expectations for off-road trucks. Chevy’s new performance halo for the Colorado lineup will feature more off-road technology than any other mid-size pickup when it goes on sale.
      The ZR2 is effectively a segment of one, combining the nimbleness and maneuverability of a mid-size pickup with a host of new off-road features and the most off-road technology of any vehicle in its segment.
      Compared to a standard Colorado, the ZR2 features a much wider track and a lifted suspension. Functional rockers have been added for better performance over rocks and obstacles, and the front and rear bumpers have been modified for better off-road clearance.
      Class-exclusive features include front and rear electronic locking differentials, available diesel engine, and the first off-road application of Multimatic Dynamic Suspensions Spool Valve (DSSVTM) damper technology.
      As a result, the Colorado ZR2 delivers exceptional performance in a variety of scenarios – from technical rock crawling to tight two-track trails to high-speed desert running to daily driving.
      “Our engineers have been incredibly successful developing Corvette and Camaro performance variants with broad performance envelopes,” said Mark Reuss, executive vice president, Global Product Development, Purchasing and Supply Chain. “The ZR2 applies that same philosophy to off-road performance. You can go rock crawling on Saturday, desert running on Sunday, and comfortably drive to work on Monday. This truck can do it all, and do it all well.”
      First off-road application of Multimatic DSSV dampers
      To achieve this unprecedented balance of on- and off-road performance, the Chevy engineering team turned to a surprising partner in creating the ZR2’s dampers, which are the heart of any off-road truck.
      Multimatic Inc., based in Markham, Ontario, is a renowned maker of high-performance Dynamic Suspensions Spool Valve (DSSV) dampers as used in championship-winning motorsport vehicles, including recent Formula One winners.
      The first volume production vehicle to use DSSV dampers was the 2014 Chevrolet Camaro Z/28. The 2017 Chevrolet Colorado ZR2 will be the first application of Multimatic DSSV damper technology to an off-road vehicle.
      “From our experience on Z/28, we knew the performance advantages offered by DSSV dampers, “ said Mark Dickens, executive director, Performance Variants, Performance Parts and Motorsports Engineering, Chevrolet. “We also know that Multimatic’s motorsport development mentality would allow us to bring a uniquely precise and repeatable custom damper to market even more quickly than a traditional damper system.”
      Compared to deflected-disk valving common on most dampers, the ZR2 employs spool valves that offer increased precision and manufacturing repeatability along with enhanced ride and handling performance both on- and off-road.
      The Colorado ZR2’s DSSV dampers are position-sensitive. Their aluminum bodies each house two spool valves providing both compression and rebound damping optimized for everyday driving. During extreme off-road use, a third, piston-mounted spool valve delivers additional, uniquely tuned, compression damping. The front dampers also employ a separate rebound valve, which comes into play when the suspension approaches full extension.
      “A traditional, deflected-disc damper only offers two force-velocity curves for tuning,” Dickens said. “The ZR2 dampers offer six tuning curves for the front, four at the rear. For the driver, this translates to greater confidence and control in a wider range of driving experiences.”
      Design meets mud, sand and rock
      Visually, the production version of the Colorado ZR2 closely resembles the concept shown at the 2014 Los Angeles Auto Show. Consumer response to that concept was so overwhelming, the team knew they needed to carry as much of the original design into production as possible.
      “For both the concept and the production versions of ZR2, the exterior design was shaped by the desire to improve capability driving over mud, sand and rock,” said Rich Scheer, director of design for Chevrolet Truck. “The wider, more aggressive stance, modified front and rear bumpers, and even the bed-mounted, spare-tire carrier all improve performance driving over rough terrain.”
      Compared to a Colorado Z71, the ZR2 has a more aggressive side profile, with the suspension lifted two inches for greater ground clearance. The steel-tube, functional rocker protectors will be standard equipment on the ZR2, and are strong enough to protect the body side while dragging the truck against a rock face.
      The ZR2 also features 17 x 8 inch aluminum wheels, in a pattern exclusive to the ZR2, wrapped in 31-inch Goodyear Duratrac off-road tires for exceptional traction. 
      The front and rear track has been widened by three-and-a-half inches, with new cast-iron control arms for greater durability in off-road situations. As a result, the ZR2 offers greater wheel travel and stability while traversing steep grades.
      The front bumper of the ZR2 has tapered ends, to increase the tire clearance when approaching obstacles. The bumper also integrates a thick, aluminum skid plate protecting the radiator and engine oil pan, while the transfer case is protected by an additional shield. Above the bumper, the ZR2 features a more aggressive grille and hood – with black insert – to complement the other exterior changes.
      A bed-mounted spare tire carrier, seen on reveal vehicles at the Los Angeles Auto Show, will be available as an accessory. “The bed-mounted spare tire adds a rugged look to ZR2, and serves a functional purpose. By relocating the spare to the bed, ZR2’s departure is improved and prevents any damage to the spare when you’re crawling over obstacles,” said Scheer.
      Class-exclusive electronic lockers, available diesel engine
      The ZR2 also features the most sophisticated four-wheel drive system in the segment. With class-exclusive, electronic-locking differentials front and rear and Chevrolet’s AutoTrac transfer case, the ZR2 offers nine drive configurations:
      2WD 2WD, locked rear differential Auto 4WD Auto 4WD, locked rear differential 4WD Hi, locked transfer case 4WD Hi, locked transfer case and locked rear differential 4WD Lo, locked transfer case 4WD Lo, locked transfer case and locked rear differential 4WD Lo, locked transfer case, locked front and rear differentials Extensive work was done to integrate the electronic lockers and allow them to seamlessly interact with the traction control, stability control, and hill-descent control. In addition, a new “Off-Road Mode” button, in combination with the traction control switch, allows the anti-lock brakes, traction control, and stability control calibrations to be tailored to different driving conditions. Off-road Mode also alters the throttle progression and shifts calibrations to give the driver better control and responsiveness.
      The ZR2 shares its powertrains with the 2017 Colorado, and it will be the only extreme production off-road truck to offer the choice of gas or diesel engines.
      The all-new 3.6L V-6, mated to a class-exclusive Hydra-Matic 8L45 8-speed automatic transmission, yields 308 horsepower and 275 lb-ft of torque, while the class-exclusive Duramax diesel engine produces 181 horsepower and 369 lb-ft of torque and will provide excellent range to overland drivers.
      Even with all of the off-roading upgrades over the base truck, the ZR2 can still tow up to 5,000 lbs. – enough to pull a camper, trailer dirt bikes, jet skis, snow mobiles and other toys – or carry 1,100 lbs. of payload.
      As such, the Colorado ZR2 offers a distinct position in the market: Compared to other midsize trucks, the Colorado offers an unrivaled suite of powertrain technologies; compared to full-size off-road trucks, the ZR2 is about a foot narrower and 500 pounds lighter, enabling greater agility over obstacles and better trail access.
      “It’s amazing what a difference a foot of width makes off road,” said Dickens. “The smaller size of the Colorado is a huge enabler for taking the ZR2 more places, and getting it through tighter spots than you could access with a full-size truck.”
      New, off-road development track at GM’s Yuma Proving Ground
      For the development of the Colorado ZR2, Chevrolet developed new off-road test areas at General Motors’ Yuma, Arizona Proving Ground.
      The Yuma Proving Ground is located on 2,400 acres of land in southeastern Arizona. Opened in 2009, Yuma features a range of tracks, laboratories and courses. 
      The new off-road facility features a multitude of off-road simulations, including high-speed desert sand trails; low-speed, loose river rock crossings; and steep, technical hill climbs and descents.
      Yuma Proving Ground’s new off-road course allowed the team to test multiple iterations of components on the ZR2 is a single day. These components were then tested a real-world facilities like Moab, Johnson Valley, and Rubicon to ensure the ZR2 is trail-ready right from the factory.
  • Recent Status Updates

  • Who's Online (See full list)

    There are no registered users currently online