When viewed alongside the next Ford F-150 and the Ram 1500, there is one thing that seems to be missing from the Chevrolet Silverado and GMC Sierra. Where the F-150 will rely on turbocharging and aluminum architecture and the Ram sports an eight-speed automatic and an air suspension, the General Motors twins lack a big, calling-card feature. They're very good, very refined trucks, but one could argue that they're not terribly innovative.

And while it might not be as flashy a feature as air suspension or a lightweight skin, the Silverado and Sierra will get their own eight-speed automatic for 2015, a transmission that will be paired with the company's Ecotec3 6.2-liter V8. The new cogswapper will also find its way into the GMC Yukon Denali, but for now, there's no indication why the Cadillac Escalade, Suburban, Tahoe and standard Yukon are being left out.

According to GM, the new gearbox is about the same size and weight as the current Hydra-Matic 6L80 six-speed. By the time the new powertrain combination enters production late this year, the EPA will almost certainly have gotten around to certifying the vehicles' fuel efficiency. Until then, feel free to speculate. The current Silverado with the 6.2 and six-speed auto returns 14 miles per gallon in the city and 20 on the highway. How much do you think the eight-speed will improve those figures? Scroll down for the official press blast from General Motors, and then head into Comments.
Show full PR text
2015 Chevrolet and GMC Pickups, SUVs to Offer Eight-Speed Transmission

DETROIT – Chevrolet and GMC have confirmed a new eight-speed automatic transmission will be standard on 2015 Chevrolet Silverado, GMC Sierra and GMC Yukon Denali/Yukon XL Denali models equipped with the 6.2L EcoTec3 V-8.

The GM-developed Hydra-Matic 8L90 eight-speed is approximately the same size and weight as the Hydra-Matic 6L80 six-speed automatic. Its 7.0 overall gear ratio spread is wider than GM's six-speed automatic transmissions, providing a numerically higher first gear ratio to help 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.

With 420 horsepower and 460 lb.-ft. of torque, the 6.2L EcoTec3 V-8 is the most powerful engine offered in any light-duty pickup, and offers a maximum available trailer rating of 12,000 pounds, based on SAE J2807 Recommended Practices. As with other EcoTec3 engines, it seamlessly switches to four-cylinder operation under lighter loads to improve fuel economy.

Additional technical details and the EPA estimated fuel economy will be announced closer to the start of production in the fourth quarter of 2014.


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    • 1 Second Ago
  • 97 Comments
      Kimura
      • 5 Months Ago
      Oh wow, so so forward thinking. If only someone had thought of installing an 8-speed in a truck sooner...oh wait.
      Eric M
      • 5 Months Ago
      The Suburban and Tahoe wouldn't get the 8 speed in this release, as they are not available with the 6.2L V8. You need to step up to GMC's Denali trim to get the 6.2L. Why the Escalade isn't mentioned is indeed puzzling. Now put this 6.2L / 8 speed combo in a 2500HD please, the 6.0L 6 speed should be put to pasture.
      chrismcfreely
      • 5 Months Ago
      They need to put an 8speed and direct injection in the 4.3. Messing with the 6.2 is pointless.
        carguy1701
        • 5 Months Ago
        @chrismcfreely
        The 6.2L has the worst fuel mileage of teh 3 engines available for these trucks, so it makes sense it gets the new tranny first, plus it entices people to upgrade to the bigger engine, so more $$$ is made.
        Eric M
        • 5 Months Ago
        @chrismcfreely
        The 4.3L has the same tech that the 5.3L and 6.2L have, including direct injection. With the 6 speed, the fuel economy numbers between the three motors are within 4mpg total spread. So the 6.2L is fairly efficient, given its power ratings. It would be the one I'd pick, hands down. However, they say 2 out of 3 consumers are buying 5.3Ls
      Revis Goodworth
      • 5 Months Ago
      So nice of Total Recall Motors to add something new to their 1999 full-sized pickup truck fleet - after all, underneath the new skin is the beating heart and skeleton of a 1999 GM pickup truck - hard points and all. Oh they've tarted up their old engines with new gimmicks and changed the paint used on the frame, but this is essentially the same truck they sold back in 1999 - go ahead - take a standard cab truck with eight foot bed from the new car lot and go find a 1999 one. Park them next to each other. You'll see what I saw yesterday. Absolutely shocking that the 2014 is called a new truck.
        OptimusPrimeRib
        • 5 Months Ago
        @Revis Goodworth
        Someone needs to stay off of the Budweiser and white lightning.
          carguy1701
          • 5 Months Ago
          @OptimusPrimeRib
          It's Laser under another name. ****** doesn't even belong on this website, he said himself he's not an enthusiast.
        Dave
        • 5 Months Ago
        @Revis Goodworth
        You mean both side by side were full size regular cab pickup trucks with chevy badges on them??? Shocking news Mr. Goodwrench.
          carguy1701
          • 5 Months Ago
          @Dave
          I really don't understand why people keep criticizing the styling of the GM trucks. Looking back through their history, GM has rarely if ever done anything daring with their truck styling.
      Randy
      • 5 Months Ago
      I'm sorry but after watching the 2015 Ford 150 videos about how they make it, why and what it's all about, i can't imagine ANY other truck being seriously considered for purchase. I've always been like 'whatever you like' but I'm overly impressed with the 2015 15000 and don't think any of the competitors will be doing well. Reason I make the comment is that adding new transmission options at this point is a bandaid on a gaping wound! They need to catch up to Ford amd fast. Not even sure how since Ford patented everything regarding the aluminum bodies. Anyway, check out the videos on their site and you'll see what I mean.
        Randy
        • 5 Months Ago
        @Randy
        15000 is 150. Darn phone keeps changing my text!
        Carpinions
        • 5 Months Ago
        @Randy
        "...Anyway, check out the videos on their site and you'll see what I mean." So what you're saying is they have good marketing. I think you are overestimating Ford's position. It's already been shown the EB V6 isn't returning the MPG savings that were originally claimed. Dipping into the turbos means an MPG hit. Torque down low? Great, but the problem is that most modern engines make horsepower and torque higher in the rev range so that fuel burns more completely at higher temps. Turbos help for high elevation breathing, but torque up higher means less straining to pull heavy loads when the engine is running higher RPM in any given gear, while the turbo engine's power is tapering off at the same RPM. And if transmission options were a band-aid fix for competitive stature, why are Ford and GM not only developing 3 transmissions together, but Ford is putting the same 8-speed GM has in their trucks come the 2015 model? Right now Ford is the oldest truck, and any test done today would show that. Multiple reviewers have said the Ram and GM trucks drive better and have better interiors. And you don't have a very good concept of how things are patented. You think GM and Ram can't come up with their own? Using aluminum extensively in a vehicle of any kind is not itself patentable. What, for example, did they patent? How would it prevent the other 2 from staying competitive or going aluminum as well (we do know GM did at least some research on going aluminum years before Ford announced they would)? Fords are not bad trucks certainly, but you underestimate Ram, especially since I think they made the better decision on half-ton MPGs by going diesel instead of turbo gas. I also think there's this GM = obsolete notion on Internet that just is not bearing out in the marketplace, because they are moving competitive metal at high transaction prices, so the trucks are better than many give them credit for, and GM has consistently managed to pull more and more out of supposedly obsolete engine tech. And we also now know that GM's engineers were none too happy about being reigned in for this generation of trucks, and are stewing to be let loose to do much more when given the next chance. Hopefully the company will not be stupid and say no.
          yonomo200
          • 5 Months Ago
          @Carpinions
          "But, I'm a marketer by trade so I filter the BS." ... and replace it with your own B.S.
          Randy
          • 5 Months Ago
          @Carpinions
          Finally, I don't think GM, Ram or Chevy trucks are obsolete. They all are nice and do they're thing BUT if I were a hard core builder, hauler, farmer, construction person or anything that demands the best of the group, I would pay more for the Ford because I know it would ladybugs serve we well without the 5 year later problems!
        jtav2002
        • 5 Months Ago
        @Randy
        Look at Randy, buying into a manufacturers marketing message. I'm sure the F150 will be a great truck, as always. But if you're going to discount every other truck because of a manufacturer made video, thats just stupid.
      carguy1701
      • 5 Months Ago
      Must be a 'late availability' thing, as its not in the order guide for either truck yet. Silverado 1500: http://www.gmfleetorderguide.com/NASApp/domestic/proddesc.jsp?year=2015&butID=1&regionID=1&divisionID=1&vehicleID=16823&type=0 Sierra 1500: http://www.gmfleetorderguide.com/NASApp/domestic/proddesc.jsp?year=2015&butID=1&regionID=1&divisionID=2&vehicleID=16825&type=0 As for the rest of the K2XX line not getting it yet, my guess is simple: production of the tranny is likely limited to one plant, and changing over takes time.
        Eric M
        • 5 Months Ago
        @carguy1701
        How on earth did this comment get a -12 rating? It's not inflammatory or opinionated. What am I missing?
          Greyhairedpete
          • 5 Months Ago
          @Eric M
          Is this where AaronM is hiding? He's been chased out (actually rage quit) from MT and other forums. I guess down-voting posts is his idea of a witty comeback?
          yonomo200
          • 5 Months Ago
          @Eric M
          There is no reason to believe it. He keeps on. They used to be able to IP ban but they don't want to, obviously. aaronliemotormaryluigiangryinch has so many accounts that he can bomb everyone into oblivion and there's nothing autoblog can do about it, because they don't even try. Everybody should make five accounts of their own and bomb every comment from every one of his accounts. I sure as hell don't have the time to do it. I wonder if he has a job at all, and if he does, how can he be allowed to do what he's doing, unless he's on Honda's payroll to do exactly what he does all day and all night.
          yonomo200
          • 5 Months Ago
          @Eric M
          Pete - He's been here for several years. He has had several names and uses several currently. Among them are mary.keana churchmotor Aaronm_mt aaronm_mt zoom_zoom_zoom holysmoke.s luigi.tony Wrangler_Unlimited Mitchell invisiblepigeon Matthew And his multiple vote bomb accounts: angryinch_x (where x = 1-40+) I have verified these name via several methods. I have a collection of proof and no matter how many down votes he gives me for posting this, he cannot hide the truth. He is nothing but a worthless troll who spends his entire day on autoblog bombing anybody who dares to cross him or, as carguy puts it, "drink the Honda coolaid." Autoblog refuses to do anything about it so he just continues to terrorize all of us who know and post the truth, or anybody who he doesn't like or disagrees with any of the garbage lies he posts. If he's typing, he's lying, even if he happens to post a random fact amongst all of the garbage he posts.
          yonomo200
          • 5 Months Ago
          @Eric M
          Just went from -2 to -9. Wow he's fast. Probably has help from his buddies on his crap website. Hondapro Jason? Are you here too?
          carguy1701
          • 5 Months Ago
          @Eric M
          Greyhairedpete: If AaronM is the same notorious Honda fanboy we're talking about, who shittalks every other brand/manufacturer and goes full sociopath if you voice any sort of opposition to him, then yes, he's been here for a while. We've already figured out that he got chased/kicked out of Auto Spies, as well as a Lexus forum, so hearing that he got run off of the Motor Trend forums isn't a surprise.
          yonomo200
          • 5 Months Ago
          @Eric M
          Here's another name: tiguan2.0
          yonomo200
          • 5 Months Ago
          @Eric M
          HAHA He's already bombing my comment. How can he possibly spend this much time babysitting threads?
      yonomo200
      • 5 Months Ago
      Hey carguy. You should go visit Hondapro Jason up in Shaumburg and see if he knows anything about this idiot. He's only about 45 minutes from you at the Honda dealership.
      R.t Voll
      • 5 Months Ago
      Ok autoblog. It's time to get rid of comment votes. Someone right now is vote bombing all the comments.
        Master Austin
        • 5 Months Ago
        @R.t Voll
        All it does is encourage people to come in with multiple accounts, and for what point, I'm not sure...its not like the top comments get a lollipop or something.
        carguy1701
        • 5 Months Ago
        @R.t Voll
        You mean aaronm_mt. And yeah, comment voting makes no sense.
          carguy1701
          • 5 Months Ago
          @carguy1701
          His problem is that I refused to drink his Kool-Aid a few years ago regarding some Honda product and have continued to resist doing so, and actively subverted his attempts at influencing other discussions with his legion of sockpuppets. He's nothing but a butthurt fanboy bully.
          Kimura
          • 5 Months Ago
          @carguy1701
          Go tell someone who cares.
          R.t Voll
          • 5 Months Ago
          @carguy1701
          Wow, Already -5 thumbs. I have know Idea what that guy has against you but its pathetic.
          carguy1701
          • 5 Months Ago
          @carguy1701
          Kimura: So you're saying that we should just roll over and let ourselves be harassed by a retard? Yeah, you can **** right off, mate.
        Khalifa
        • 5 Months Ago
        @R.t Voll
        Why do you care about the voting? Even if they down vote you to -50 nothing will change.
        Jobu
        • 5 Months Ago
        @R.t Voll
        Really why do you even bother to notice down votes at all... It's like hemorrhoids on Scarlett Johanssen- not particularly pleasant but at the end of the day nobody gives a ****.
        yonomo200
        • 5 Months Ago
        @R.t Voll
        It's not the voting, per se. It's the lies and the way one can perpetuate a false sense of what people think in the market based on what people read on forums such as this. If people think everyone hates Chevy trucks because of the crap lies they see on these blogs, it could affect sales. The Honda troll is terrified because Detroit is building the best cars ever and that's a threat to his employer. He's terrified because companies like Hyundai and Kia are coming for his precious Crapanese cars. Detroit and Korea are stealing sales from Honda. It's just a matter of time because god knows, Honda builds some of the most hideous messes in the auto industry and they masquerade Civic as "luxury cars" with their Crapura brand.
      Larry Litmanen
      • 5 Months Ago
      This is the problem, people pay more attention to numbers rather than actual review of how a car performs. Ohhhhh a seven speed tranny is better than a six speed...............because we now live in a computer spec world people look at everything like they look at computer chips, gigabytes and Megahertz..................more is better.
        The Wasp
        • 5 Months Ago
        @Larry Litmanen
        Yes, more gigabytes and megahertz are better. Good point.
          Jimmy Joe
          • 5 Months Ago
          @The Wasp
          http://www.androidauthority.com/samsung-gaming-benchmarks-250692/ Samsung caught gaming benchmarks with Galaxy S4
          Larry Litmanen
          • 5 Months Ago
          @The Wasp
          CNET did a test one time, i compare an Android device to an Apple one, Android specs were nearly 2 times of the Apple one, so on paper every task should be done twice as fast. Yet when opening apps and seeing how fast everything was done Apple won..............because software and other stuff matters as well. People need to look at OVEALL performance and not just concentrate on one or two numbers.
          The Wasp
          • 5 Months Ago
          @The Wasp
          Valid point, Larry. More gigabytes and megahertz, like speeds in a transmission, offer greater potential -- not necessarily better performance. In the absence of additional information, I side with greater potential over the status quo but certainly there are those who don't. Jimmy, I'm not a Samsung fan but Apple is no saint either.
        Carpinions
        • 5 Months Ago
        @Larry Litmanen
        But even that depends on the kind of performance one is seeking. Many times bigger numbers mean better, and sometimes it's about the sum of the parts. In the case of the Silverado, it has an "old" 6-speed, but in tests the way it is geared may not make for the most swift towing experience, but it does make for a comparatively fuel efficient one.
      BlankaLi
      • 5 Months Ago
      I wonder when the recalls start.
        Randy
        • 5 Months Ago
        @BlankaLi
        After the next bankruptcy, after someone discovers the cover-up and after a new CEO is appointed so nobody 'important' will take the blame!
      R.t Voll
      • 5 Months Ago
      Hey Aarron. Honda is garbage. Come get me..
      thecornfedmule
      • 5 Months Ago
      So, after you release the xmission you'll update the already obsolete interior, right? Get rid of my grandpa's column shifter, use something other than the edge of a piece of cardboard to design the dash, and make it easy to tell the difference between the work truck and Hi-Country interiors at more than 10ft, right?
        carguy1701
        • 5 Months Ago
        @thecornfedmule
        There's nothing wrong with a column shifter. Trucks have been using them for years.
          carguy1701
          • 5 Months Ago
          @carguy1701
          Those electric shifters that Benz and BMW are using aren't aging well (the BMW one has generated numerous complaints), and I doubt the Ram knob will age well either.
          thecornfedmule
          • 5 Months Ago
          @carguy1701
          There's a LOT wrong with a column shifter...especially the current old fashioned type on a vehicle costing nearly $70K. I can understand the work trucks, but anything SLT / LT and above should have either a console shifter, knob, or electronic column shifter ala Mercedes...
          thecornfedmule
          • 5 Months Ago
          @carguy1701
          Never heard of any noticeable issues with the ZF designed shift controller. My old 2008 550i has an electronic shifter and never had any issues. Haven't seen hardly any occurrences on the BMW and Mercedes boards I frequent, so that is probably a moot point. They've pretty much mastered the shift controller.
        carguy1701
        • 5 Months Ago
        @thecornfedmule
        Also, if you can't tell the work truck interior apart from the High Country one by looking at the materials alone, you have eye issues.
          sloanm101
          • 5 Months Ago
          @carguy1701
          As long as these dashes don't crack, like the rest of the GMT900 SUV/Trucks; only then will I believe the quality has improved or at least quality control has improved.
          thecornfedmule
          • 5 Months Ago
          @carguy1701
          Have you looked at a Ram interior lately? Yeah, GM needs to step it up...
          Carpinions
          • 5 Months Ago
          @carguy1701
          GMT900 dashes crack? I have never heard of this complaint let alone it being a more problem. I've been in several GMT800s over the last year or so and didn't see this problem so I'm skeptical it would be a serious issue with GMT900s.
        WhoIsTylerDurden
        • 5 Months Ago
        @thecornfedmule
        A real truck has a column shifter. The Ram's knob is nothing but a gimmick that looks like it was borrowed from the Caravan. A console shifter belongs in the kind of truck that lives out its life as pavement queen, never once touching anything resembling a dirt road.
          thecornfedmule
          • 5 Months Ago
          @WhoIsTylerDurden
          A console shifter belongs in the kind of truck that lives out its life as pavement queen, never once touching anything resembling a dirt road." which accounts for 80% of the trucks out there...
        Carpinions
        • 5 Months Ago
        @thecornfedmule
        The Ram still has a column shifter in some models.
          thecornfedmule
          • 5 Months Ago
          @Carpinions
          Yeah, those models with bench seats and the old 6 speed. Once they phase those transmissions completely out you probably won't see them anymore. But I guess, GM is catering to the old farts that insist on the column shifter to remind them of their 'old 54 Chevy 3100...
          Carpinions
          • 5 Months Ago
          @Carpinions
          @ thecornfedmule Um, no. A simple image search on the 2014 Ram will reveal to you that the column shifter can be found on pretty much any RAM from the 1500 through the 4500, on many different trim levels. Do a search on the 2014 F-150 and guess what? You can find images of even full-tilt F-150 King Ranch interiors with a column shifter. You idiot.
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