GM’s partnership with Navistar International shows promise

General Motors and Navistar International announced their partnership to build medium-duty trucks back in October of 2015, but since then, nothing has surfaced regarding the Class 4 and 5 commercial trucks – that is, until now. Spy shots have surfaced of a camouflaged test mule apparently prepped for stability testing. The rig has a beefy roll bar mounted to its flatbed and its front bumper is prepped for outriggers.

The images come via our friends at TFL Truck. The prototype truck clearly has elements of both GM and Navistar International. The hood and front grille are familiar International designs, while the headlights are clearly lifted from the 2015-2015 Chevrolet Silverado 1500 WT. The truck’s cab is also pure GM, likely shared with the Silverado 2500/3500 HD. The trailer tow mirrors, door handles, roof marker lights, and the cab’s overall shape are dead giveaways. Sadly, both automakers have remained quiet about the trucks, though TFL Truck cites reports suggesting the 4500/5500 trucks will debut in March of 2018 and go on-sale shortly thereafter as 2019 models. It’s unclear whether the trucks will have GM nameplate or Navistar International branding – or both. GM’s Chevy and GMC divisions could very easily revive the Kodiak and TopKick names, as both have illustrious histories spanning from 1980 to 2009. International might use the truck to expand its lineup below the DuraStar, currently its smallest medium-duty truck.

Continue reading for more information.

Why It Matters

2019 Chevy Kodiak HD 4500 Caught testing Exterior Spyshots
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GM will finally reenter the medium-duty segment since killing the Kodiak/TopKick in 2009 during the recession.

The partnership between General Motors and Navistar International promises great growth between both companies. GM will finally reenter the medium-duty segment since killing the Kodiak/TopKick in 2009 during the recession. International could expand its lineup to better compete with Ford’s expansive commercial truck lineup and Ram’s 4500 and 5500 trucks. We know from the 2015 partnership announcement that GM will supply the powertrain and other vehicle components, while International will focus on the chassis and manufacturing aspects. Vehicle assembly will happen at Navistar’s Springfield, Ohio plant.

GM’s newest 6.6-liter Duramax L5P V-8 turbodiesel is expected under the hood, along with the Allison 1000 automatic transmission. A gasoline engine isn’t likely, unlike the 8.1-liter big-block V-8 offered in the Kodiak and TopKick trucks in the 2000s.

Stay tuned as official news from GM and Navistar International is expected in March of 2018. Until then, we’ll keep our eyes peeled for test mules and rumors.


2003 - 2009 Chevrolet Kodiak Exterior
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Read our full review on the 2003 - 2009 Chevy Kodiak

2016 Chevrolet Silverado High Resolution Exterior
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Rear our full review on the 2016 Chevy Silverado

Source: TFL Truck

Mark McNabb
Mark McNabb was a contributor at TopSpeed from 2013 to 2018. Growing up, Mark always had a mind for tinkering on random items throughout his home and dad’s garage, including a 1953 Ford Mainline and 1971 Corvette Stingray.  Read full bio
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