The GMC Canyon I Regular Cab 2.8 (175 Hp) Automatic, produced from 2004 to 2006, represented GMC’s entry into the burgeoning mid-size pickup truck market in North America. Positioned as a more manageable and fuel-efficient alternative to full-size trucks like the Sierra, the Canyon aimed to appeal to buyers who didn’t require the substantial capacity of a larger vehicle. This particular variant, equipped with the 2.8-liter LK5 Vortec inline-four engine and a four-speed Hydra-Matic automatic transmission, served as the base engine option for the Regular Cab configuration, offering a balance of affordability and capability. It was part of the first generation Canyon (2004-2012) which shared its platform with the Chevrolet Colorado.
Technical Specifications
| Brand | GMC |
| Model | Canyon |
| Generation | Canyon I Regular Cab |
| Type (Engine) | 2.8 (175 Hp) Automatic |
| Start of production | 2004 |
| End of production | 2006 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2-3 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 9 kg/Hp, 111.5 Hp/tonne |
| Weight-to-torque ratio | 6.3 kg/Nm, 160 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, Longitudinal |
| 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 | 1569 kg, 3459.05 lbs |
| Max. weight | 2200 kg, 4850.17 lbs |
| Max load | 631 kg, 1391.12 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 |
| Permitted trailer load with brakes (12%) | 1588 kg, 3500.94 lbs |
| Length | 4897 mm, 192.8 in |
| Width | 1717 mm, 67.6 in |
| Height | 1646 mm, 64.8 in |
| Wheelbase | 2825 mm, 111.22 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) | 12.4 m, 40.68 ft |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 4 gears, automatic transmission Hydra-Matic |
| 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 was the LK5 2.8-liter inline-four cylinder engine, a member of General Motors’ Vortec family. This engine featured a cast iron block and aluminum cylinder head, incorporating dual overhead camshafts (DOHC) and variable valve timing (CVVT) for improved efficiency and responsiveness. The multi-port fuel injection system delivered fuel directly to each cylinder, optimizing combustion. The engine produced 175 horsepower at 5600 rpm and 185 lb-ft of torque at 2800 rpm. The Hydra-Matic 4L60-E four-speed automatic transmission was the sole transmission option for this configuration. This transmission was known for its durability and relatively smooth shifting, though it lacked the efficiency of more modern transmissions with additional gears. The longitudinal engine placement and rear-wheel drive configuration were standard for this type of pickup truck.
Driving Characteristics
The 2.8-liter engine and four-speed automatic combination provided adequate, but not exhilarating, performance. Acceleration was modest, and the truck felt most comfortable cruising at highway speeds. The automatic transmission’s gear ratios were tuned for fuel economy and everyday usability rather than outright performance. Compared to the optional 3.5-liter inline-five or the more powerful V6 engines available in other Canyon trims, this 2.8L version felt noticeably less responsive, particularly when fully loaded or climbing hills. However, the lower power output also contributed to better fuel economy, making it a practical choice for those prioritizing efficiency. The rear-wheel drive setup offered a traditional truck feel, but could struggle for traction in slippery conditions without careful driving.
Equipment & Trim Levels
The 2.8-liter automatic Canyon typically came with a fairly basic level of equipment. Standard features generally included air conditioning, a basic audio system, and cloth upholstery. The interior was functional and durable, prioritizing practicality over luxury. Optional extras included power windows and locks, an upgraded audio system, and cruise control. The Regular Cab configuration offered limited interior space, with seating for two to three passengers depending on the bench seat option. The interior trim was typically a dark gray or tan color scheme.
Chassis & Braking
The Canyon I Regular Cab 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, a common setup for pickup trucks designed for hauling and towing. The braking system featured ventilated discs at the front and drum brakes at the rear. Anti-lock brakes (ABS) were standard, enhancing safety during emergency braking situations. The steering was rack-and-pinion with hydraulic power assist, providing reasonably precise steering feel. The rear leaf spring suspension was tuned for load-carrying capacity, which could result in a somewhat firm ride when the truck was unloaded.
Market Reception & Comparison
The 2.8-liter Canyon was generally viewed as a sensible and affordable option within the mid-size truck segment. Critics acknowledged its fuel efficiency and practicality, but often noted its lack of power compared to competing models and higher-trim Canyon variants. Compared to the more popular 3.5-liter inline-five, the 2.8L offered lower running costs but sacrificed performance. The 2.8L automatic was often favored by buyers who primarily used their trucks for commuting and light-duty tasks, while those needing more towing capacity or off-road capability typically opted for the more powerful engine options. Reliability was generally good, with the 2.8L engine proving to be a durable and long-lasting powerplant.
Legacy
The GMC Canyon I Regular Cab 2.8 (175 Hp) Automatic, while not the most powerful or feature-rich version of the Canyon, remains a relatively common sight on the used car market. The LK5 Vortec engine is known for its longevity and relatively simple maintenance requirements. Parts availability is generally good, and the truck’s straightforward design makes it relatively easy to repair. These Canyons are often sought after by buyers looking for an affordable and reliable pickup truck for basic transportation and light-duty work. While not a collector’s item, the 2.8L Canyon represents a practical and durable entry point into the world of mid-size pickup trucks.


