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2019 Chevrolet Silverado Trailboss vs. 2019 GMC Sierra AT4: What’s the Difference?

Two of the most intriguing new pickups on the market are the all-new off-road oriented 2019 Chevrolet Silverado Trailboss and the 2019 GMC Sierra AT4. As the Sierra and the Silverado are closely related, you might be wondering what the main differences are between the Trailboss and the AT4. Below, we’ll dive into the details to help you better understand the differences between these two off-road oriented GM full-size trucks.

If wondering about the main differences between the basic 2019 Chevrolet Silverado and the GMC Sierra, we’ve got a comparison of those two vehicles here.

2019 Chevrolet Silverado Trailboss vs. 2019 GMC Sierra AT4 pricing, powertrains and configurations

Pricing, Powertrains And Configurations

The Silverado Trailboss is available in either "Custom" or "LT" trim levels, with LT being the nicer of the two. Custom models are available with either the Silverado’s 4.3-liter V6, which makes 285 horsepower and 305 lb-ft of torque, or the 5.3-liter V8, which offers 355 hp and 383 lb-ft of torque. The LT Trailboss is available exclusively with the 5.3-liter V8. The Custom Trailboss starts at $40,995, while the LT Trailboss has a base price of $50,095. A fully-loaded LT Trailboss approaches $68,000.

The Trailboss is available as either a double cab with the standard 6.5-foot bed or as a crew cab model with either the standard bed or the short 5-foot bed. See the 2019 Chevrolet Silverado Trailboss models for sale near you

The Sierra AT4 represents a single trim level within the Sierra lineup. The AT4 is offered in the same cab and bed configurations as the Trailboss, but with slightly different engine choices. While the Trailboss is available with either the V6 or the 5.3-liter V8, AT4 buyers get to choose between the 5.3-liter V8 and the potent 6.2-liter V8, which makes 420 hp and 460 lb-ft of torque. In the press release for the AT4, GMC notes that the Sierra’s upcoming 3.0-liter diesel engine will be available in the AT4 as well. See the 2019 GMC Sierra AT4 models for sale near you

The AT4 starts at $52,294 while a fully loaded example will exceed $72,000.

2019 Chevrolet Silverado Trailboss vs. 2019 GMC Sierra AT4 exterior


In terms of design, the new Silverado and the new Sierra are more differentiated than they were in the past, and this carries over to their off-road trim levels. Both the AT4 and the Trailboss are offered with fully blacked out trim and aggressive-looking black wheels. Goodyear Wrangler Duratrac Mud-Terrain Tires are optional on both, as are larger 20-in wheels. The Trailboss and the AT4 both come with integrated red-painted front recovery hooks. The Silverado comes standard with Chevrolet’s bowtie grille, but a "Chevrolet" wordmark grille is optional. The Sierra is offered only with the red block "GMC" grille — no alternative grille is available.

2019 Chevrolet Silverado Trailboss vs. 2019 GMC Sierra AT4 interior


While the new Sierra and the new Silverado wear different styling on the outside, they’re still pretty much identical to one another on the inside, save for branding. Their new interiors improve significantly upon those of the outgoing models, offering better ergonomics, higher quality materials and more space.

2019 Chevrolet Silverado Trailboss vs. 2019 GMC Sierra AT4 off-road


And now for the fun part — the off-road stuff. The off-road chops of the Silverado Trailboss and the Sierra AT4 are pretty much identical. Both build off of what is essentially the Silverado’s Z71 package. This means they get standard 4-wheel drive, a 2-speed transfer case, Rancho shocks, an automatically locking rear differential, hill descent control, a front skid plate and a heavy-duty air cleaner. The Trailboss and the AT4 trim add a 2-inch suspension lift, available Goodyear Duratrac Mud-Terrain tires and the aforementioned front recovery hooks and off-road styling cues to the Z71 package.

Don’t get either of these trucks confused with a Ford F-150 Raptor, as the Raptor is in a completely different league in terms of off-road features and ability. The Trailboss and the AT4’s true competitors are the Ram 1500 Rebel and the Toyota Tundra TRD Pro.

2019 Chevrolet Silverado Trailboss vs. 2019 GMC Sierra AT4 features


Altogether, the Silverado Trailboss is derived from the entry-level (Custom) and the midlevel (LTZ) Silverado trim levels. This means you can’t get a Trailboss with features reserved for the Silverado LTZ or the High Country, like a power tailgate or a surround view camera. Still, the Silverado Trailboss can be optioned with a sunroof, leather interior, heated front seats and a heated, leather wrapped steering wheel and dual-zone climate control, among a few other things.

GMC’s representatives like to say that the AT4 is to off-road as the Denali is to luxury. As the AT4 is positioned above the Trailboss, it offers everything available on the Chevrolet, plus more. This includes a surround view camera, a power tailgate, a head-up display and the Sierra’s exclusive Multi-Pro tailgate.

2019 Chevrolet Silverado Trailboss vs. 2019 GMC Sierra AT4 conclusions


As is the case with the Silverado and the Sierra product lines as a whole, the 2019 Chevrolet Silverado Trailboss is a more mainstream, economical offering, while the GMC Sierra AT4 is the upmarket off-roader, and offers a more premium experience than its fraternal twin from Chevrolet. This is also evident in their respective prices. The Sierra AT4 starts at a full $11,000 more than the Silverado Trailboss, while fully-loaded, the AT4 is still around $4,000 more than the Trailboss. Both vehicles offer a lot in terms of off-road aesthetics, and a little more in terms of off-road ability, relative to what you get on a standard Silverado Z71. While neither will sniff the off-road performance credibility of the mighty Ford F-150 Raptor, they both offer added capability and style relative to a standard Silverado or Sierra. Find a Chevrolet Silverado for sale or Find a GMC Sierra for sale

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