The GMC Canyon I Extended Cab, specifically the 2.8-liter (175 hp) 4WD variant, was a mid-size pickup truck produced from 2004 to 2006. It represented GMC’s entry into the increasingly popular compact pickup segment, sharing a platform with the Chevrolet Colorado. This particular configuration aimed to provide a balance between capability, affordability, and fuel efficiency for buyers needing a versatile truck for both work and personal use. Positioned as a step up from the base 2.9-liter engine, the 2.8-liter offered increased power and torque, making it a popular choice for those who frequently towed or hauled cargo. The Extended Cab configuration added rear seating, enhancing its practicality for families or crews.
Technical Specifications
| Brand | GMC |
| Model | Canyon |
| Generation | Canyon I Extended Cab |
| Type (Engine) | 2.8 (175 Hp) 4WD |
| Start of production | 2004 |
| End of production | 2006 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 4-5 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 9.5 kg/Hp, 105.3 Hp/tonne |
| Weight-to-torque ratio | 6.6 kg/Nm, 151 Nm/tonne |
| Power | 175 Hp @ 5600 rpm |
| Power per litre | 63.2 Hp/l |
| Torque | 251 Nm @ 2800 rpm, 185.13 lb.-ft. @ 2800 rpm |
| Maximum engine speed | 6300 rpm |
| Engine layout | Front, Transverse |
| Engine Model/Code | LK5 Vortec 2800 |
| Engine displacement | 2770 cm3, 169.04 cu. in. |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 93 mm, 3.66 in. |
| Piston Stroke | 102 mm, 4.02 in. |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, CVVT |
| Engine oil capacity | 4.7 l, 4.97 US qt | 4.14 UK qt |
| Coolant | 9.8 l, 10.36 US qt | 8.62 UK qt |
| Kerb Weight | 1662 kg, 3664.08 lbs |
| Max. weight | 2404 kg, 5299.91 lbs |
| Max load | 742 kg, 1635.83 lbs |
| Trunk (boot) space – minimum | 1243 l, 43.9 cu. ft |
| Fuel tank capacity | 74.2 l, 19.6 US gal | 16.32 UK gal |
| Length | 5260 mm, 207.09 in |
| Width | 1717 mm, 67.6 in |
| Height | 1646 mm, 64.8 in |
| Wheelbase | 3198 mm, 125.91 in |
| Front track | 1460 mm, 57.48 in |
| Rear (Back) track | 1460 mm, 57.48 in |
| Ride height (ground clearance) | 216 mm, 8.5 in |
| Minimum turning circle (turning diameter) | 13.6 m, 44.62 ft |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Front suspension | Independent coil spring |
| Rear suspension | Leaf spring |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 205/75 R15; 225/70 R15 |
| Wheel rims size | 15 |
Powertrain & Engine Architecture
The heart of this Canyon variant is the LK5 Vortec 2800 engine, a 2.8-liter inline four-cylinder powerplant. This engine utilized a cast iron block with an aluminum cylinder head, a common configuration for durability and weight reduction. It featured a dual overhead camshaft (DOHC) design with variable valve timing (CVVT) on both intake and exhaust valves, enhancing efficiency and responsiveness. Fuel delivery was managed by a multi-port fuel injection system. The engine produced 175 horsepower at 5600 rpm and 251 Nm (185.13 lb-ft) of torque at 2800 rpm. This power was delivered through a standard five-speed manual transmission to all four wheels via a part-time four-wheel-drive system. The transmission’s gear ratios were tuned for a balance of acceleration and fuel economy, though it wasn’t designed for particularly sporty performance.
Driving Characteristics
The 2.8-liter engine, paired with the manual transmission, provided adequate, but not exhilarating, performance. Acceleration was reasonable for everyday driving, but passing maneuvers required planning, especially when fully loaded or climbing hills. The 4WD system offered improved traction in inclement weather and on unpaved surfaces. Compared to the base 2.9-liter engine, the 2.8-liter offered a noticeable improvement in both power and torque, making it more capable for towing and hauling. However, it fell short of the performance offered by the optional 3.5-liter inline-five or the more powerful V6 engines available in other Canyon trims. The manual transmission provided a more engaging driving experience than the available automatic, allowing for greater control over gear selection and engine speed.
Equipment & Trim Levels
The Extended Cab 2.8 4WD Canyon typically included standard features such as air conditioning, power windows and locks, and an AM/FM stereo. The Extended Cab configuration added a small rear seat capable of accommodating two passengers, though legroom was limited. Interior upholstery was typically cloth, and the dashboard featured a straightforward layout with easy-to-use controls. Optional extras included a premium sound system, cruise control, and alloy wheels. The trim level generally fell in the mid-range of the Canyon lineup, offering a good balance of features and affordability.
Chassis & Braking
The Canyon I utilized a body-on-frame construction, providing a robust and durable platform. The front suspension consisted of independent coil springs, while the rear suspension employed leaf springs. This setup prioritized load-carrying capacity and durability over refined ride quality. Braking duties were handled by ventilated discs at the front and drum brakes at the rear. An anti-lock braking system (ABS) was standard, enhancing safety during emergency braking situations. The steering system was a rack-and-pinion setup with hydraulic power assist, providing responsive and predictable handling.
Market Reception & Comparison
The GMC Canyon, and specifically the 2.8-liter 4WD variant, received generally positive reviews for its versatility and value. Critics praised its rugged construction, comfortable ride (for a pickup truck), and available four-wheel-drive system. However, some reviewers noted that the 2.8-liter engine could feel underpowered when fully loaded or towing. Compared to the base 2.9-liter engine, the 2.8-liter offered a significant improvement in performance and fuel economy. The 2.8-liter also proved to be more reliable than the 2.9-liter, with fewer reported issues. Fuel economy was rated at around 16 mpg city and 20 mpg highway, which was competitive for its class.
Legacy
The 2.8-liter LK5 Vortec engine proved to be a relatively reliable powerplant, with many examples still on the road today. While not known for exceptional longevity, it generally held up well with proper maintenance. The Canyon I Extended Cab 2.8 4WD remains a popular choice in the used truck market, particularly for buyers seeking an affordable and capable pickup for light-duty work and recreational use. Common issues include minor oil leaks and occasional sensor failures, but these are typically inexpensive to repair. The Canyon’s relatively simple design and readily available parts make it a relatively easy vehicle to maintain and repair, contributing to its continued popularity among truck enthusiasts and budget-conscious buyers.
