2017 GMC Sierra HD Diesel Prototype: Exhaust Sound Caught on Camera
Can the 2017 GMC Sierra HD (and Chevy Silverado HD) get to 900 lb-ft of torque with the next generation Duramax V8 turbo-diesel? TFLtruck caught this 3500 HD Dually chassis prototype testing at high altitude. Take a look at the hood cover
I haven't seen those out testing yet. I have seen the new Superduty out testing. With the heavy grades and extreme elevation changes in a short distance, I see a lot of trucks heat/stress testing here...................... towing.
I also saw a CUV that was all bagged. I don't know what that one was, as it was going the other way. The funny one was a Prius that was all bagged, testing in the Valley. There was no way you could mistake it for anything but a Prius, so the joke was, why even bag it. My 13-year-old son said what it was immediately, with no prompting. Someone wasted their time on that one.
The shooters at KGP Photography caught a convoy of heavy-duty Chevrolet Silverado (above) and GMC Sierra (below) prototypes on the open roads, providing the best look yet at the rugged remakes of the crew-cab versions of the standard and dualie trucks due in 2016. The goal must certainly be to bump the current 6.6L Duramax turbo diesel's horsepower, torque and towing capacity to counter Ford's recently upgraded 6.7L Powerstroke V8 turbo diesel. Ford's revamped 6.7L diesel currently outguns GM's 6.6L units; the Ford generates 440 hp and 860 lb.-ft. of torque vs. GM's 397 hp and 760 lb.-ft. of torque.
Deeper Breathing To Add Power
Part of GM's strategy is to feed more air into the engine, via a new functional hood air intake designed into the trucks' redesigned hoods. The new air duct sits prominently near the leading edge of the hood—the GMC gets a circular mesh intake grille while the Chevy appears to get a diamond-shaped interweaving mesh grille insert. The Silverado and Sierra pickups had uncovered grilles and lightly camouflaged front bumpers, with a heavier vinyl hood hiding the hood's new air intake. The new breathing apparatus has been added in conjunction with a revamped diesel engine, reportedly using a modified turbo and new engine-management software resulting in a power boost to battle Ford's Powerstroke diesel engines.
The prototypes were all sporting diesel exhaust, and a fuel fill-up had confirmed that these trucks were thirsting for diesel fuel. The fuel door reads "Ultra Low Sulfur Diesel Fuel Only."
Re: Spy Shots: 2017 Heavy-Duty Chevrolet Silverado and GMC Sierra Diesels
Still shows the the cover on the DEF tank. It looks to me like a decoy but my hope still is that they moved the DEF tank and the engines get a boost in torque.
Wasn't a new diesel engine coming for the HD's?
Diego, thanks for posting up some new news on the HD's.
Still shows the the cover on the DEF tank. It looks to me like a decoy but my hope still is that they moved the DEF tank and the engines get a boost in torque.
Wasn't a new diesel engine coming for the HD's?
Diego, thanks for posting up some new news on the HD's.
Yes, there is a new Duramax coming in the next model year or two. C/K man posted that the start date for ordering a 2016 is significantly later than usual, so it might be here sooner than we thought.
the "BIG BOYS" including CATERPILLAR have spent WAY MORE money then GM ever would trying to reduce NoX with NO luck
and as a MECHANIC ANY procedure that involves MORE EGR is WORSE then DEF fluid 1000 to 1
I wish they would add volt tech to it. 900 ftlbs from the Turbo diesel and 200 ftlbs from the electric motor would be something special, its not like weight is a big concern in this segment
Re: Spy Shots: 2017 Heavy-Duty Chevrolet Silverado and GMC Sierra Diesels
They need to move that damn DEF tank
It's absolute nonsense that they kept it in that location when they moved to the 2014 body style; yes, I know the chassis is still basically GMT900 on the HDs, but they could have accommodated the DEF tank in the fuel tank area with the body redesign and put the filler under the fuel door like Ford did. That DEF tank is a ground clearance issue and a reliability hazard for those of us who work off road.
For cyclists and pedestrians, it is very unpleasant to wait at a traffic light near a diesel vehicle. We get all the pollution from the exhaust pipes and we do not have air conditioning system with air filters.
It would be so easy to put a pipe leading directly to the back of the truck.
Just because this prototype has the DEF tank in the same location does not mean that it will stay there during production, I am holding out hope that they are testing the Duramax on an existing platform. I am convincing myself that the new engine requires the additional cooling that the new hood design allows which is why the hood is different but the DEF tank is the same. As to the fill location, it is a little PINTA, but you don't hear of GM owners dumping DEF in their fuel tank and killing a $12K fuel system. You do hear of that happening with the FORD and RAM owners. Sometimes customers have to be protected from themselves. As to how much GVWR is enough? It isn't 30K, that I know. I routinely pull at 30K with my 2015 3500 with a 6.0L gas. I think would like to see the new trucks come in at 40k in a CC 3500 4X4 with the Duramax.
To a point. Olds ran the scoops all the way under the front bumper. Today, high performance cars have ducts in the same place, but for the brakes. Most air intakes will only go to behind a headlight. So, the idea is still in use in principle, but not execution.
The DEF tank definitely looks like a decoy in those pics.
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