Chevrolet Kodiak and GMC TopKick (Maurice Randall) for American Truck Simulator
The 1997 Chevrolet Kodiak and GMC TopKick turned into fifth-wheel tractors, modeled from scratch by Maurice Randall. Released October 2026; free on Steam Workshop.
Download Chevrolet Kodiak and GMC TopKick (Maurice Randall)
More screenshots on Steam Workshop ↗
What this mod does
Kodiak and TopKick adds two General Motors medium-duty trucks: the Chevrolet Kodiak and the GMC TopKick from model year 1997, the first with the new sloped hood. They were modeled from scratch by Maurice Randall, with Bomkat on research, testing and skins, and engine sounds by Slav Jerry.
An uncommon tractor
In real life these trucks were almost always sold as cab-chassis for work bodies, and tractor versions were rare. In the mod they come with a fifth wheel so you can hook up trailers and run short or regional deliveries.
Practical info
- You buy them in the modded dealers section, under Chevrolet and GMC.
- Definition IDs: chev.kodiak and gmc.topkick.
- Released on October 4, 2026, with ATS 1.61 already out; the author doesn’t list a game version.
- The author mentions the Allison transmission and left room for possible vertical exhaust stacks.
Good to know
One player says the 350 hp feels weak; the author puts it down to the differential ratio and the Allison transmission. It’s the first released version, so it’s worth checking the Workshop changelog before using it in a long-running save.
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User rating
Highlights and things to keep in mind
- Two medium-duty trucks in a single mod
- Models built from scratch
- Very recent (October 2026)
- First version: changes may come
- Power is a bit tight with heavy loads
- The description doesn't detail engines or transmissions
Requirements
- American Truck Simulator 1.61 (released while that version was current; the author doesn't list it)
- Steam account
- No DLC or extra mods, according to the description
How to install it
- Open the Kodiak and TopKick page on Steam Workshop and click Subscribe.
- Launch ATS, go to the Mod Manager and enable the mod.
- Go to the modded dealers section and look for the Chevrolet or GMC brands.
- Spec the truck with a fifth wheel and try the differential ratio that works best for you.
Version history
-
1.04 Oct 2026Current
First public release
Common problems
Are they different trucks?
They're the Chevrolet Kodiak and the GMC TopKick, 1997 siblings that you buy separately under each brand.
Can I haul trailers?
Yes. The author set them up with a fifth wheel, although in real life they were almost always cab-chassis.
Why is it slow?
The author puts it down to the differential ratio and the Allison transmission.
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