2018 Chevrolet Colorado ZR2
The Colorado ZR2 is the extreme off-road variant of the 2018 Chevrolet Colorado midsize pickup truck that Chevrolet states not only resets the bar for mid-size trucks but also for off-road trucks in general.
The 2018 model year represents the second year of production of the Colorado ZR2. The only changes to the 2018 ZR2 include the addition of the Colorado ZR2 Midnight and Colorado Dusk Special Edition models (see links below).
Chevrolet characterizes the Colorado ZR2 as being “a segment of one” thanks to a unique combination of nimbleness and maneuverability of a mid-size pickup with a wide assortment of new off-road features and the most off-road technology of any vehicle in its segment.
When compared to a standard Colorado, the Colorado ZR2 features:
- A much wider track
- A lifted suspension
- Functional rockers for better performance over rocks and obstacles
- Modified front and rear bumpers for better off-road clearance
Class-exclusive features include:
- Front and rear electronic locking differentials
- Available diesel engine
- The first off-road application of Multimatic Dynamic Suspensions Spool Valve (DSSVTM) damper technology
The result is exceptional performance in a variety of scenarios – from technical rock crawling to tight two-track trails to high-speed desert running to daily driving.
“Our engineers have been incredibly successful developing Corvette and Camaro performance variants with broad performance envelopes,” said Mark Reuss, executive vice president, Global Product Development, Purchasing and Supply Chain. “The ZR2 applies that same philosophy to off-road performance. You can go rock crawling on Saturday, desert running on Sunday, and comfortably drive to work on Monday. This truck can do it all, and do it all well.”
Dampers serve as the heart of any off-road truck. And in order to achieve an unprecedented balance of on- and off-road performance, engineers turned to Multimatic Inc. in creating high-performance Dynamic Suspensions Spool Valve (DSSV) dampers for the ZR2.
DSSV dampers are used in championship-winning motorsport vehicles, including recent Formula One winners. The first volume production vehicle to use DSSV dampers was the 2014 Chevrolet Camaro Z/28, and the Colorado ZR2 represents the first application of Multimatic DSSV damper technology in an off-road vehicle.
“From our experience on Z/28, we knew the performance advantages offered by DSSV dampers, “ said Mark Dickens, executive director, Performance Variants, Performance Parts and Motorsports Engineering, Chevrolet. “We also know that Multimatic’s motorsport development mentality would allow us to bring a uniquely precise and repeatable custom damper to market even more quickly than a traditional damper system.”
Compared to deflected-disk valving common on most dampers, the ZR2 employs spool valves that offer increased precision and manufacturing repeatability along with enhanced ride and handling performance, both on- and off-road.
The Colorado ZR2’s DSSV dampers are position-sensitive. Their aluminum bodies each house two spool valves providing both compression and rebound damping optimized for everyday driving. During extreme off-road use, a third, piston-mounted spool valve delivers additional, uniquely tuned, compression damping. The front dampers also employ a separate rebound valve, which comes into play when the suspension approaches full extension.
“A traditional, deflected-disc damper only offers two force-velocity curves for tuning,” Dickens said. “The ZR2 dampers offer six tuning curves for the front, four at the rear. For the driver, this translates to greater confidence and control in a wider range of driving experiences.”
Visually, the production version of the Colorado ZR2 closely resembles the concept shown at the 2014 Los Angeles Auto Show. Consumer response to that concept was so overwhelming, the team knew they needed to carry as much of the original design into production as possible.
“For both the concept and the production versions of ZR2, the exterior design was shaped by the desire to improve capability driving over mud, sand and rock,” said Rich Scheer, director of design for Chevrolet Truck. “The wider, more aggressive stance, modified front and rear bumpers, and even the bed-mounted, spare-tire carrier all improve performance driving over rough terrain.”
Compared to a Colorado Z71, the ZR2 has a more aggressive side profile, with the suspension lifted two inches for greater ground clearance. The steel-tube, functional rocker protectors will be standard equipment on the ZR2, and are strong enough to protect the body side while dragging the truck against a rock face.
The ZR2 also features 17 x 8 inch aluminum wheels, in a pattern exclusive to the ZR2, wrapped in 31-inch Goodyear Duratrac off-road tires for exceptional traction.
The front and rear track has been widened by three-and-a-half inches, with new cast-iron control arms for greater durability in off-road situations. As a result, the ZR2 offers greater wheel travel and stability while traversing steep grades.
The front bumper of the ZR2 has tapered ends, to increase the tire clearance when approaching obstacles. The bumper also integrates a thick, aluminum skid plate protecting the radiator and engine oil pan, while the transfer case is protected by an additional shield. Above the bumper, the ZR2 features a more aggressive grille and hood – with black insert – to complement the other exterior changes.
A bed-mounted spare tire carrier, seen on reveal vehicles at the Los Angeles Auto Show, will be available as an accessory. “The bed-mounted spare tire adds a rugged look to ZR2, and serves a functional purpose. By relocating the spare to the bed, ZR2’s departure is improved and prevents any damage to the spare when you’re crawling over obstacles,” said Scheer.
The ZR2 also features the most sophisticated four-wheel drive system in the segment. With class-exclusive, electronic-locking differentials front and rear and Chevrolet’s AutoTrac transfer case, the ZR2 offers nine drive configurations:
- 2WD, locked rear differential
- Auto 4WD
- Auto 4WD, locked rear differential
- 4WD Hi, locked transfer case
- 4WD Hi, locked transfer case and locked rear differential
- 4WD Lo, locked transfer case
- 4WD Lo, locked transfer case and locked rear differential
- 4WD Lo, locked transfer case, locked front and rear differentials
Extensive work was done to integrate the electronic lockers and allow them to seamlessly interact with the traction control, stability control, and hill-descent control. In addition, a new “Off-Road Mode” button, in combination with the traction control switch, allows the anti-lock brakes, traction control, and stability control calibrations to be tailored to different driving conditions. Off-road Mode also alters the throttle progression and shifts calibrations to give the driver better control and responsiveness.
The ZR2 shares its powertrains with the 2018 Colorado, and it will be the only extreme production off-road truck to offer the choice of gas or diesel engines.
The all-new 3.6L V-6, mated to a class-exclusive Hydra-Matic 8L45 8-speed automatic transmission, yields 308 horsepower and 275 lb-ft of torque, while the class-exclusive Duramax diesel engine produces 181 horsepower and 369 lb-ft of torque and will provide excellent range to overland drivers.
Even with all of the off-roading upgrades over the base truck, the ZR2 can still tow up to 5,000 lbs. – enough to pull a camper, trailer dirt bikes, jet skis, snow mobiles and other toys – or carry 1,100 lbs. of payload.
As such, the Colorado ZR2 offers a distinct position in the market: Compared to other midsize trucks, the Colorado offers an unrivaled suite of powertrain technologies; compared to full-size off-road trucks, the ZR2 is about a foot narrower and 500 pounds lighter, enabling greater agility over obstacles and better trail access.
“It’s amazing what a difference a foot of width makes off road,” said Dickens. “The smaller size of the Colorado is a huge enabler for taking the ZR2 more places, and getting it through tighter spots than you could access with a full-size truck.”
In developing the Colorado ZR2, Chevrolet developed new off-road test areas at General Motors’ Yuma, Arizona Proving Ground.
Located on 2,400 acres of land in southeastern Arizona, the Yuma Proving Ground opened in 2009 and features a range of tracks, laboratories and courses.
The new off-road facility features a multitude of off-road simulations, including:
- High-speed desert sand trails
- Low-speed, loose river rock crossings
- Steep, technical hill climbs and descents
Yuma Proving Ground’s new off-road course allowed the engineering team to test multiple iterations of components on the ZR2 is a single day. These components were then tested a real-world facilities like Moab, Johnson Valley, and Rubicon to ensure the ZR2 is trail-ready right from the factory.
The 2017 model year Chevy Colorado ZR2 made its debut at the 2016 Los Angeles Auto Show.
|Engine:||3.6L DOHC V-6 with Direct Injection||2.8L I-4 Turbo-Diesel|
|GM RPO Code:||LGZ||LWN|
|Bore & stroke (in / mm):||3.7 x 3.37 / 94 x 85.6||3.7 x 3.94 / 94 x 100|
|Block material:||Cast aluminum||Grey cast iron|
|Cylinder head material:||Cast aluminum||Cast aluminum|
|Valvetrain:||Dual-overhead camshafts with four valves per cylinder; continuously variable valve timing||Dual-overhead camshafts with four valves per cylinder|
|Fuel delivery:||High-pressure direct fuel injection with electronic throttle control||Common rail direct fuel injection|
|Horsepower (hp / kW @ rpm):||308 / 230 @ 6800 (SAE certified)||186 / 135 @ 3400 (SAE certified)|
|Torque (lb.-ft. / Nm @ rpm):||275 / 373 @ 4000 (SAE certified)||369 / 500 @ 2000 (SAE certified)|
|Type:||Hydra-Matic 6L50 six-speed automatic with 2.8L I-4 Diesel||Hydra-Matic 8L45 eight-speed automatic with 3.6L V-6 Gasoline|
|Final Drive Ratio:||3.42|
|Metric / Engine||3.6L V-6 Gasoline||2.8L I-4 Diesel Duramax|
|City||16 MPG||19 MPG|
|Highway||18 MPG||22 MPG|
|Front Suspension:||Independent coil-over-shock with Multimatic Dynamic Suspensions Spool Valve (DSSVTM) dampers, locking differential|
|Rear Suspension:||Solid axle with semi-elliptic, two-stage multi-leaf springs; with Multimatic Dynamic Suspensions Spool Valve (DSSVTM) dampers, locking differential|
|Steering Type:||Electric power-assisted rack-and-pinion|
|Brake Type:||Power-assisted four-wheel disc brakes with Duralife long-life rotors; standard ABS, hill-descent control|
|Front Brake Rotor Size (in / mm):||12.20 / 310|
|Rear Brake Rotor Size (in / mm):||12.75 / 324|
|Wheel Size:||17 x 8-inch aluminum|
|Cab||Extended Cab||Crew Cab|
|Box||6’2” box||5’2” box|
|Wheelbase (in / mm):||128.5 / 3264||128.5 / 3264|
|Overall Length (in / mm):||212.4 / 5395||212.4 / 5395|
|Overall Width (in / mm):||76.7 / 1978||76.7 / 1978|
|Overall Height (in / mm):||72.2 / 1834||72.2 / 1834|
|Front Track (in / mm):||65.9 / 1674||65.9 / 1674|
|Rear Track (in / mm):||65.9 / 1674||65.9 / 1674|
|Cab||Extended Cab||Crew Cab|
|Box||6’2” box||5’2” box|
|Front headroom (in / mm):||41.4 / 1052||41.4 / 1052|
|Rear headroom (in / mm):||36.7 / 932||38.3 / 972|
|Front legroom (in / mm):||45 / 1143||45 / 1143|
|Rear legroom (in / mm):||28.6 / 727||35.8 / 910|
|Front shoulder room (in / mm):||57.5 / 1460||57.5 / 1460|
|Rear shoulder room (in / mm):||57.3 / 1455||56.2 / 1427|
|Front hip room (in / mm):||55 / 1396||55 / 1396|
|Rear hip room (in / mm):||52.2 / 1327||53.3 / 1353|
|Cab||Extended Cab||Crew Cab|
|Box||6’2” box||5’2” box|
|Base curb weight with 2.8L I-4 diesel (lb / kg):||4925 / 2234||5011 / 2273|
|Base curb weight with 3.6L V-6 gasoline (lb / kg):||4639 / 2104||4745 / 2152|
|Max GVWR with 2.8L I-4 diesel (lb / kg):||6200 / 2812||6200 / 2812|
|Max GVWR with V-6 gasoline (lb / kg):||6100 / 2767||6000 / 2722|
|Max payload with 2.8L I-4 diesel (lb / kg):||1100 / 499||1100 / 499|
|Max payload with 3.6L V6 gasoline (lb / kg):||1100 / 499||1100 / 499|
|Max trailering with 2.8L I-4 diesel (lb / kg):||5000 / 2268||5000 / 2268|
|Max trailering with 3.6L V-6 gasoline (lb / kg):||5000 / 2268||5000 / 2268|
|Fuel tank capacity (gallons):||21 mpg|
- 2018 Chevrolet Colorado ZR2 Dusk Edition
- 2018 Chevrolet Colorado ZR2 Midnight Edition