Chevrolet Returns to Medium-Duty Class With Monster-Duty Chassis Cab

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Chevrolet revealed its first-ever medium-duty Silverado chassis cab for Classes 4, 5 and 6 today at the 2018 Work Truck Show in Indianapolis. Those with long memories may remember that in 2009 GM killed the Chevy Kodiak and GMC TopKick medium-duty trucks that ran all the way up to Class 8.

But now GM has partnered with big-rig maker Navistar to create an easy-to-upfit mid-range player that looks similar to the Silverado 2500/3500 pickup trucks and shares the same 6.6-liter Duramax diesel engine and Allison transmission for its one-and-only powertrain.

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To be built at Navistar's Springfield, Ohio, plant, the new work truck will produce 350 horsepower and 700 pounds-feet of torque. The Allison transmission backing up the engine will be available in several versions; pairing depends on how much weight the chassis cab is rated to carry. Those transmissions will include the 1000 and 2000 vocational series along with several other stronger versions to accommodate the expected Class 6 loads that go all the way up to a 22,900-pound gross vehicle weight rating. Many of those transmissions will be offered with a power takeoff option as well.

The new Silverado medium-duty truck will be offered in regular- and crew-cab configurations in 4x2 or 4x4 drivetrains with seven different wheelbases ready to accommodate the forestry, cargo-hauling, mining and construction industries. Several upfitters already designed compatible dump beds, cargo boxes, flatbeds, RV shells and other types of bolt-on bodies for the new truck, and we're guessing there might even be a version with a full-size one-ton bed.

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The Silverado 4500/5500 will have a newly designed tilt-forward clamshell front hood to make routine maintenance easier, and, new for the class, the Chevy will offer the only factory-installed rear air suspension that can adjust by as much as 4 inches up or down. Other thoughtful additions include putting the diesel exhaust fluid tank fill spout on the opposite side of the fuel filler so you can now fill up both tanks at the same time (as many truck stops are equipped to do) and the entire frame is painted to help minimize rust and corrosion.

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Finally, although there is no mistaking the interior for a function-first medium-duty truck, Chevy will be making OnStar and Commercial Link available in the base Work Truck and more well-equipped LT trims along with a built-in 4G LTE Wi-Fi hot spot (data plan required), wireless cellphone charging, Bluetooth and Apple CarPlay and Android Auto connectivity.

The new truck will be available in the fourth quarter of this year, with ordering guides out a few months before that. No word on pricing yet.

Manufacturer images

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Comments

Fox body mustangs are absolutely hideous. They looked too much like the late 80's Escort but with a terrible body kit.

This is a smart move to partner with Navistar on this truck. GM was in this market but after the bankruptcy and the Government reorganization it divested itself of much of its medium commercial trucks along with Saturn, Pontiac, Hummer, and Saab. Much better to use Navistar's underutilized plant than to start from scratch. These trucks will never sell in the numbers that light trucks sell in but they are needed for commercial use. Better to focus most of your resources on what sells the most and brings the most profit in. Ford does offer gasoline engines in this class where it appears that GM will only offer diesel at least initially.

At one time International medium duty trucks were being made in Ford truck plants because International didn't have the plant capacity to keep up with demand.

Sergio has talked about a joint manufacturing venture with an another auto company to make compact and midsize cars since FCA for the most part has left the market--possibly Mazda and Nissan. Less capital and frees up the plant capacity to make more pickups, suvs, and crossovers which are selling well and have a higher profit margin.

@Jeff S

Correct, sir. Most important is that GM's timing is perfect.

The US markets for housing, construction and manufacturing (despite what Big Al and his BFF Christine think) are having their best growth in decades, with solid fundamentals in place for continued well being.

Like I said, you guys know nothing about racing, in addition, it's chevy guys that use FOX Body mustangs because those motors are cheap.

Why can't they use an 80-90s Camaro? Oh yea, the platform is WACK!!

@andrwken: GM did not come late to the party on this segment, they've already been down this road when it comes to the experience on building these type of trucks, it's not as if your going to have one of these in your driveway anytime soon!!

Like I said, you guys know nothing about racing, in addition, it's chevy guys that use FOX Body mustangs because those motors are cheap.

@ Frank

Your hopeless! LMFAO.....You have it turned around: Ford guys know the 5.0 which was actually a 4.9L (Ford lied about that to you to and you still drink it up like cool-aide) is total garbage..so they are buying the best small block V8's on the market made by GENERAL MOTORS!!!! TO TRY AND COMPETE WITH THE CAMARO's!! So classic....you just open yourself up to a beating all the time!!!!

@ Frank

Your hopeless! LMFAO.....You have it turned around: Ford guys know the 5.0 which was actually a 4.9L (Ford lied about that to you to and you still drink it up like cool-aide) is total garbage..so they are buying the best small block V8's on the market made by GENERAL MOTORS!!!! TO TRY AND COMPETE WITH THE CAMARO's!! So classic....you just open yourself up to a beating all the time!!!!


Posted by: TNTGMC | Mar 9, 2018 12:37:31 PM


LMFAO, Ford lied? Wow, you're a *****.

It's for MKTING. In addition, since you say you're so INTELLIGENT:

The precise spec is 4" bore, 3" stroke. ((pi * 4) * 3) * 8 = 301.592895.

The decision to call it a 5.0L was a marketing one.

4.94889333 liters


Call it what you want, you guys gloat that a .1 second in a 1/4 drag race is a beat down, that there is uber *****. But, we're used to your gibberish.

Like I said, you guys know nothing about racing, in addition, it's chevy guys that use FOX Body mustangs because those motors are cheap.

Why can't they use an 80-90s Camaro? Oh yea, the platform is WACK!!

Posted by: Frank | Mar 9, 2018 10:12:26 AM

Frank, I hear fox bodies with blown engines are cheap. Hence, pick-up a cheap fox body, drop in a real V8 chevy small block and go racing. At least now, it will REALLY move.

With respect to 80's and 90's Camaro. They are over at the road course where a car has to do more than just go in a straight line.

#what@m0r0n

@ Frank

Lol...again u hurt yourself..
It doesn't displace a 5.0L.....come up with any other nonsense you want....u still sound NOT intelligent!!!

@ oxi

Rigid vehicle structures are better served by 4 corner independent suspensions. Pickups have but a fraction of the torsional rigidity or frame section modulus and your comparison is apples to turnips. Medium duty to HD pickups is more applicable as they are both primarily intended for on-road, domestic use.

HD pickups with relatively high axle load capacities are better served by a SFA arrangement wherein the axle housing itself is a rigid suspension member that acts as a much longer lever arm, equalizing the load distribution on uneven terrain.

Conversely, with the IFS setup, specifically the GM HD IFS, the springs are linear rate torsion bars, which, at equivalent capacity ratings, result in significantly elevated NVH distributed to the passenger compartment. GM has long battled the inherent weaknesses associated with their design by limiting practical tire sizes and issuing warranty directives associated with front axle housing and steering failures. For 30 years GM has been selling the HD IFS setup, and even after an update for the GMT900s, it is significantly outclassed by the competition.

GM has bet their market position on pavement and light duty sufficiency. Ford and Ram have gone a different direction and quite frankly, the same bear out GMs error. Even with a Duramax and Allison combo, the same axle supplier as Ram, GM has 20-25% of the HD truck market. Ford and Ram absolutely dominate. For a while, one could argue a ride quality advantage. But that was negated by the lower axle capacity. Once the spring rates of the linear rate bars were increased to better compete, suddenly independent reviews began to attack the GM ride quality.

It is similar to the GenIV Camaro return with a IRS and all sorts of additional add ons, pushing 4,000 lbs with a driver and a full tank of fuel, 300 lbs more than a loaded GTA with T-tops, full tank, and the same driver. Just because magazines and the people who don’t buy the product say it is awesome, doesn’t make it so. There is no shortage of IFS proponents, but 3/4 of the folks actually purchasing HD trucks aren’t buying the GM IFS argument. Oh yeah, btw, it is pretty consistent that about 70% of HD pickups sold are 4x4, virtually consistent across all makes.

I represent a good portion of the non-GM HD market. Owned a IFS GM product, suffered numerous component failures, sold the GM truck and bought a competitor’s product. In spite of more aggressive use, I have expwrienced ZERO component failures or even steering damage, with the competitors trucks. See, I’ve done the Ford and the Dodge thing. Something about going off-road and then scheduling an alignment, or worse a tow to the shop, to address damaged tie rods, broken half-shafts, and my personal favorite-a split front aluminum axle housing.
Have yet to crack cast iron DANA 60, a Super 60 or the cast iron AAM 925.

If you want a 4x4 HD pickup you can take off graded roads and drive it to work the next day, GM isn’t the product.

@andrwken: GM did not come late to the party on this segment, they've already been down this road when it comes to the experience on building these type of trucks, it's not as if your going to have one of these in your driveway anytime soon!!


Posted by: Raymond J | Mar 9, 2018 10:35:44 AM

----

Might want to re-read the posts. I responded to someone else who made that ignorant comment.

If you want a 4x4 HD pickup you can take off graded roads and drive it to work the next day, GM isn’t the product.


Posted by: Adam Levenstein | Mar 10, 2018 10:53:48 PM

-----

couple things,

Are you comparing apples to apples?

Or are you comparing 450-650 products to GM's HD IFS?

I don't recall medium duty GM trucks having IFS, I could be wrong.

Looking at these current GM products. They also have SFA. Why are you ranting when these products appear to have what your looking for along with a superior drivetrain?

As for the rear axles, if your talking 3/4 and 1 ton,

The AAM 11.5", 14 bolt, is a GM design, sold off to AAM. Not many people will take a Dana axle or Ford design over it. So how was GM behind on that design?

Looks old considering it has the headlights off of a 2014 Silverado

@ mstangt,

Mustang II was a PINTO,Fox body Ford/Mercury/Lincolns were Pinto's !

Yes,Fox bodies are not jsut Mustangs ,Lincoln,Mercury,Ford had 2 doors,4 doors and station wagons that were fox bodies..

Oddly,today people are odd,they call cars by the platform name ,people never called a Mustang a Fox Body when they were new,NOBODY !! Nobody ever called my Unlces 1981 Lincoln Continental 4 door a Fox body and it was .....Because if you say I drive a Fox body its like 20 different models of car..Fox body just isnt a Mustang,its a Fairmont station wagon a Mercury Zephr a Mercury Cougar,Ford thunderbird ,multiple models of Lincoln Continentals !!

Its like how they say square body for GM trucks,nobody said squar body or bubble top for older Impala's,just odd how ebonics taught the people to speak ...I took my LC and I raced a B body and we lost to a e body and got stuck then a ZJ passed up and the M body pulled us over for speeding !!! The guy in the Fox body blew up when he got hit from the rear !

Great looking truck!!! It will be THE STANDARD in which all others will be judged!!! Maybe now all of the Ford GIRLY GIRLS will shut their pie holes!!

Let it be written....let it be DONE!!

Thanks for sharing; it truly is a really helpful for me. Looking forward for another post.



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