The basic Colorado is designed for both work and being a daily driver, and
comes with a 4-cylinder, 3.6-liter V6 rated at 308 horsepower or 2.8-liter
Duramax turbo-diesel with 369 lb-ft of torque. These are all paired to an
automatic transmission, with choice of rear-wheel or four-wheel-drive. Within
the 4X4 system is an automatic mode that simulates all-wheel-drive, ideal for
getting through the powder and slush that winter brings. It was two years ago
that the ZR2 was offered for the first time, brandishing a strengthened
suspension with upgraded control arms, steering gear, and hubs.
It's a full two inches taller than the standard
Colorado 4 X 4, with front and rear locking differentials for when the road
ahead presents difficult passing potential. There are also Multimatic shock
absorbers on all four wheels, using variable valving that offers up the
toughness required for serious off-road navigation and still giving a smooth
asphalt ride. For the 2019 model, the Bison package was added, and capabilities
drastically altered. There are now five new skidplates underneath, heavy steel
front and rear bumpers with a winch and recovery points, and wheels designed
for off-road punishment.
There's even an optional snorkel air intake if the
agenda leads to incredibly deep water, and we assure you, it's real and
functional! All of these features including waterproof floor liners helped
elevate the Bison above its competition to declare the Off-Road Truck of the
Year award from Popular Mechanics. Once inside, the Bison bears a heavy dose of
similarity to the ZR2. There are the necessary controls for the locking
differentials, but the rest of the interior has not strayed much from the
standard Chevy feel. In writer Jeff Zurschmeide's opinion here, the Bison is the ultimate off-road truck,
leading the pack by leaps and bounds with its ability, go-anywhere prowess, and
potential!