The Chevrolet Colorado II Extended Cab Long Box, specifically the 3.6-liter V6 4WD Automatic variant, represents a significant iteration in Chevrolet’s mid-size pickup truck lineage. Produced from 2017 to 2020, this configuration occupied a prominent position within the Colorado II range, offering a balance of capability, comfort, and technology aimed at the North American truck buyer. It was part of the second generation of the Colorado (designated as the Colorado II), which debuted as a more refined and modern alternative to the first-generation model, sharing a platform with the GMC Canyon.
Technical Specifications
| Brand | Chevrolet |
| Model | Colorado |
| Generation | Colorado II Extended Cab Long Box |
| Type (Engine) | 3.6 V6 (308 Hp) 4WD Automatic |
| Start of production | 2017 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 13.8 l/100 km (17 US mpg, 20.5 UK mpg, 7.2 km/l) |
| Fuel consumption (extra urban) | 9.8 l/100 km (24 US mpg, 28.8 UK mpg, 10.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 6.4 kg/Hp, 156.7 Hp/tonne |
| Weight-to-torque ratio | 5.3 kg/Nm, 189.7 Nm/tonne |
| Power | 308 Hp @ 6800 rpm |
| Torque | 373 Nm @ 4000 rpm (275.11 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | LGZ |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 94 mm (3.7 in) |
| Piston Stroke | 85.6 mm (3.37 in) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 5.7 l (6.02 US qt | 5.02 UK qt) |
| Coolant | 10.6 l (11.2 US qt | 9.33 UK qt) |
| Kerb Weight | 1966-1984 kg (4334.29 – 4373.97 lbs) |
| Max. weight | 2676 kg (5899.57 lbs) |
| Max load | 692-710 kg (1525.6 – 1565.28 lbs) |
| Trunk (boot) space – maximum | 1414 l (49.93 cu. ft) |
| Fuel tank capacity | 79 l (20.87 US gal | 17.38 UK gal) |
| Permitted trailer load with brakes (12%) | 3175 kg (6999.68 lbs) |
| Length | 5403 mm (212.72 in) |
| Width | 1886 mm (74.25 in) |
| Height | 1785 mm (70.28 in) |
| Wheelbase | 3258 mm (128.27 in) |
| Ride height (ground clearance) | 210 mm (8.27 in) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Hydra-Matic |
| Front suspension | Independent coil spring |
| Rear suspension | Rigid axle suspension, Leaf spring |
| Front brakes | Disc, 310 mm |
| Rear brakes | Disc, 324 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 265/70 R16; 255/65 R17; 265/60 R18 |
| Wheel rims size | 7J x 16; 7.5J x 16; 8J x 17; 8.5J x 18 |
Powertrain & Engine Architecture
At the heart of this Colorado variant lies the LGZ 3.6-liter V6 engine. This engine is a naturally aspirated, 24-valve DOHC powerplant featuring direct fuel injection. The LGZ engine is known for its relatively smooth operation and respectable power output. The engine utilizes a cylinder deactivation system, allowing it to operate on four cylinders during light-load conditions to improve fuel economy. Paired with this engine is the Hydra-Matic 8-speed automatic transmission. This transmission was a significant upgrade over the older 6-speed units, offering smoother shifts, improved fuel efficiency, and a wider gear ratio spread. The 8-speed transmission is electronically controlled, adapting to driving conditions and driver input for optimal performance.
Driving Characteristics
The 308 horsepower and 275 lb-ft of torque provided by the LGZ V6 and 8-speed automatic combination delivered a capable driving experience. While not a performance-oriented truck, it offered ample power for everyday driving, towing, and hauling. The automatic transmission was tuned for smooth, comfortable shifts, prioritizing usability over aggressive responsiveness. Compared to the available 2.5-liter four-cylinder engine, the V6 provided a substantial increase in power and towing capacity. Against the Duramax diesel option, the V6 offered a lower initial cost but sacrificed fuel economy and low-end torque. The 4WD system provided enhanced traction in inclement weather and off-road conditions, making it a versatile choice for a wide range of drivers.
Equipment & Trim Levels
The 3.6L V6 Automatic was available across several Colorado trim levels, including the LT and Z71. Standard equipment typically included air conditioning, a Chevrolet MyLink infotainment system with a touchscreen display, Bluetooth connectivity, and a rearview camera. Higher trim levels, like the Z71, added features such as leather upholstery, heated front seats, a premium audio system, and off-road-focused equipment like skid plates and an automatic locking rear differential. Optional extras included a sunroof, navigation system, and various appearance packages.
Chassis & Braking
The Colorado II utilized a body-on-frame construction, providing a robust and durable platform. The front suspension featured independent coil springs, while the rear suspension employed a traditional leaf spring setup. This configuration balanced ride comfort with load-carrying capacity. Braking duties were handled by disc brakes on all four wheels, with the front discs measuring 310mm and the rear discs measuring 324mm. An Anti-lock Braking System (ABS) was standard, enhancing safety and control during emergency braking situations.
Market Reception & Comparison
The Chevrolet Colorado II, and specifically the 3.6L V6 4WD Automatic variant, was generally well-received by automotive critics. It was praised for its comfortable ride, spacious cabin, and capable powertrain. However, some reviewers noted that the fuel economy was not class-leading, particularly compared to the diesel option. Compared to competitors like the Toyota Tacoma and Ford Ranger, the Colorado offered a more refined interior and a smoother ride, but the Tacoma often held an edge in terms of resale value and perceived reliability. The V6 automatic offered a compelling alternative to the diesel, appealing to buyers who prioritized initial cost and simplicity over maximum fuel efficiency.
Legacy
The LGZ 3.6L V6 and 8-speed automatic powertrain combination has proven to be relatively reliable in the Colorado II. While some owners have reported minor issues with the fuel system or transmission, major mechanical failures are uncommon. On the used car market, these Colorados represent a good value proposition, offering a capable and comfortable mid-size pickup truck at a reasonable price. The combination of V6 power, automatic convenience, and 4WD capability continues to make this variant a popular choice among truck buyers seeking a versatile and dependable vehicle.
