New Duramax

GMC Teases New Duramax with Photos of 2017 Hood Scoop
Scoop Is “Functional”

Quote :

There are few sectors of the truck market that are more symbolically significant, and more brag-worthy than 3/4 and 1-ton diesel trucks. As a visit to any diesel truck forum can attest, owners of Rams, Chevys, GMCs and Fords all passionately defend their rides, and passionately believe their diesel engines are the best. While that eternal argument may never be settled, General Motors is about to throw more fuel onto the diesel enthusiast fire with the 2017 HD trucks. GMC today released photos of the front end of the 2017 Sierra Denali 2500 HD with a clearly visible hood scoop (something we’ve seen in recent spy photos) that GM claims is “functional.”

What we’re reading into that is that this is going to be one beastly diesel. The current high water mark for horsepower in the class is the Ford 6.7L “Scorpion” Power Stroke with 440 hp, and the bar for torque stands at a thundering 900 lb-ft for the 6.7L Cummins I-6 in the Ram 3500. With those numbers in mind, we’re expecting the new 6.6L Duramax to easily top 400 hp and 800 lb-ft of torque. Also unknown is what the all-important regular production order (RPO) code will be for the new engine. There is not an exact sequence to it, as the Duramax, over its five generations, has gone from LB7, LLY, LBZ, LMM to LML. Regardless, we’re confident it will be the most powerful, most refined and most capable Duramax to date. We can’t wait to get more info on the General’s new diesel beast!

Truck Trend

It's a bit too blingy for me. I hope they refreshed the drivetrain. Hopefully they eliminated the DEF tank goiter although early spy photos suggest it remains.

Sorry, I'd rather have better line of sight than a taller hood.
Cowl induction and a lower leading edge would be better, IMO.

way too much bling for me,

not a good looking truck, IMO

a step backwards

I bet we find out down the road that all these wild ass HP and Torque claims are just as bogus as the gas mileage numbers have been shown to be.

Oh I think the power is there.
However torque management probably only lets you get it in one gear under ideal conditions.

I bet the power is there but mileage seems to be the same as my dads old 7.3 IDI. Biggest differences are the power rating and the cost to repair; both much much higher!

That Chevy is a good looking truck!

It has been years since I could say this. The Chevy looks better than the GMC.

Charlie in TX wrote:

It has been years since I could say this. The Chevy looks better than the GMC.

agreed

Charlie in TX wrote:

It has been years since I could say this. The Chevy looks better than the GMC.

I had to scroll up to look at the GMC again after seeing the Chevy pics because the same thing crossed my mind.

More Details on 2017 Duramax Hood Scoop

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General Motors got the diesel truck enthusiast world’s attention earlier this week when it revealed the face of the 2017 GMC Sierra Denali 2500 HD and its prominent hood scoop. That release was vague to its function other than to say it “hints what lies beneath.” It doesn’t take a rocket scientist to deduce that an updated 6.6L Duramax V-8 diesel engine lies beneath. Thankfully, GM has given us a little more details on the scoop’s function, this time accompanied by a photo of a Silverado 2500 HD.

The scoop is revealed to be part of a dual-circuit cold-air intake system. The purpose of the scoop is to draw 60 percent of the intake air in, resulting in a lower air-intake temperature closer to ambient. Without underhood photos to reveal the system’s shape, the scoop is described as going into a 180-degree elbow with a water separator function to ensure the air that goes into the engine is cool and dry. The rest of the intake charge is drawn through an intake mounted in the front fender.

Extensive testing was conducted on the system in both real-world and lab simulation conditions to ensure proper operation regardless of conditions. Details and output figures on the next-generation Duramax are due closer to the truck’s on-sale date later this year.

Truck Trend

Its going to have to put up some massive numbers to be leader of the pack again. But I think they would be better suited to focus on economy and the ability to run without urea.

Does GM have something against driver visibility?
High belt lines on their cars and overly tall truck hoods.

When they do a truck shootout I'd like to see line of sight figures.
Pick one driver and have that person pull forward until a given spot on the ground disappears. Then measure to the trucks bumper, repeat and compare.

Charlie in TX wrote:

It has been years since I could say this. The Chevy looks better than the GMC.

I agree. Neither one makes me want to run out to a dealership and buy one.

Diesel Dan wrote:

Does GM have something against driver visibility?
High belt lines on their cars and overly tall truck hoods.

When they do a truck shootout I'd like to see line of sight figures.
Pick one driver and have that person pull forward until a given spot on the ground disappears. Then measure to the trucks bumper, repeat and compare.

That's a good idea. Lower cab heights for reduced aerodynamic drag only compounds the problem. Function takes a back seat to form (appearance) once again.

2017 Dmax 2500 right side pictures (DEF tank) are starting to appear online. It's hard to believe but the new GM design hangs down even worse than the previous. It's curious how the early marketing pics avoided the right side.

That lame DEF tank location would be deal breaker for my as i go off road once on a while , the former bosses both bought new duramax trucks and those tanks are an eyesore .

Here's a pic without the step bar. It looks so bad you almost hope is a photoshop from a GM hater.

Well now that's just hideously stupid looking and low as hell , GM needs to get its shit together .

That's one of the thing that kinda turned me off when I went and shopped the GMC SLT truck recently

it sits so low.

My tundra sits up WAY higher, it almost looks lifted stock with the 33" tires I have on

That tank looks ridiculous! How did that get past the basic drawings much less into production?

Breathing Borla wrote:

That's one of the thing that kinda turned me off when I went and shopped the GMC SLT truck recently

it sits so low.

My tundra sits up WAY higher, it almost looks lifted stock with the 33" tires I have on

Your Tundra definitely looks better.

Co-worker just bought a '17 dmax, chevy.
Crewcab 3500 swb, lives in town 5 miles from work, wife works from home, no trailer and no place to park one if they did buy one.

And that is a prime example of why they have become so expensive.