The GMC Acadia first-generation, particularly the facelifted model from 2013 onward, represented GMC’s entry into the burgeoning mid-size crossover SUV market in North America. Produced from 2015 through 2016 with the 3.6L V6 and automatic transmission, this variant aimed to provide a compelling blend of space, comfort, and capability for families. Built on the GM Lambda platform (shared with the Chevrolet Traverse and Buick Enclave), the Acadia offered seating for seven or eight passengers, depending on configuration. The 3.6L V6 with the automatic transmission was positioned as a mainstream offering within the Acadia lineup, slotting between the base four-cylinder engine (available in earlier years) and potential all-wheel-drive configurations.
Technical Specifications
| Brand | GMC |
| Model | Acadia |
| Generation | Acadia I (facelift 2013) |
| Type (Engine) | 3.6 V6 (281 Hp) Automatic |
| Start of production | 2015 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV, Crossover |
| Seats | 7-8 |
| Doors | 5 |
| Fuel consumption (urban) | 13.8 l/100 km (17 US mpg, 20.5 UK mpg) |
| Fuel consumption (extra urban) | 9.8 l/100 km (24 US mpg, 28.8 UK mpg) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 7.5 kg/Hp, 133 Hp/tonne |
| Weight-to-torque ratio | 5.9 kg/Nm, 170.9 Nm/tonne |
| Power | 281 Hp @ 6300 rpm |
| Power per litre | 78.8 Hp/l |
| Torque | 361 Nm @ 3400 rpm (266.26 lb.-ft. @ 3400 rpm) |
| Maximum engine speed | 6700 rpm |
| Engine layout | Front, Transverse |
| Engine Model/Code | LLT |
| Engine displacement | 3564 cm3 (217.49 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 94 mm (3.7 in.) |
| Piston Stroke | 85.6 mm (3.37 in.) |
| Compression ratio | 11.3:1 |
| 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 capacity | 11.3 l (11.94 US qt | 9.94 UK qt) |
| Kerb Weight | 2112 kg (4656.16 lbs.) |
| Max. weight | 2908 kg (6411.04 lbs.) |
| Max load | 796 kg (1754.88 lbs.) |
| Trunk (boot) space – minimum | 682 l (24.08 cu. ft.) |
| Trunk (boot) space – maximum | 3288 l (116.11 cu. ft.) |
| Fuel tank capacity | 83 l (21.93 US gal | 18.26 UK gal) |
| Permitted trailer load with brakes (12%) | 2359 kg (5200.7 lbs.) |
| Length | 5100 mm (200.79 in.) |
| Width | 2004 mm (78.9 in.) |
| Height | 1844 mm (72.6 in.) |
| Wheelbase | 3020 mm (118.9 in.) |
| Front track | 1709 mm (67.28 in.) |
| Rear (Back) track | 1704 mm (67.09 in.) |
| Ride height (ground clearance) | 193 mm (7.6 in.) |
| Minimum turning circle (turning diameter) | 12.3 m (40.35 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, automatic transmission Hydra-Matic |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 255/65 R18; 255/60 R19; 255/55 R20 |
| Wheel rims size | 7.5J x 18; 8J x 19; 7.5J x 20 |
Powertrain & Engine Architecture
The heart of this Acadia variant is the 3.6-liter LLT V6 engine. This engine is a naturally aspirated, 24-valve DOHC (Double Overhead Camshaft) engine featuring direct fuel injection. Direct injection allows for more precise fuel delivery, improving both power and fuel efficiency. The LLT engine utilizes a variable valve timing system to optimize performance across the rev range. The engine produces 281 horsepower at 6300 rpm and 266 lb-ft of torque at 3400 rpm. This power is delivered through a six-speed Hydra-Matic automatic transmission. This transmission was a common choice for GM vehicles of this era, known for its smooth shifting and reliability. The transmission is electronically controlled, adapting shift points based on driving conditions and throttle input.
Driving Characteristics
The 3.6L V6 and six-speed automatic combination in the Acadia provided adequate, though not particularly sporty, performance. Acceleration from 0 to 60 mph typically took around 7.5-8.5 seconds, depending on load and conditions. Compared to potential AWD versions, the front-wheel-drive configuration offered slightly better fuel economy but reduced traction in inclement weather. The automatic transmission’s gear ratios were tuned for comfortable cruising and everyday driving, rather than aggressive acceleration. While the V6 offered sufficient power for highway merging and passing, it lacked the urgency of some competitors with turbocharged engines. The transmission generally shifted smoothly, but some drivers noted a slight hesitation during downshifts.
Equipment & Trim Levels
The 3.6L V6 automatic Acadia typically came standard with features like tri-zone automatic climate control, a rearview camera, a touchscreen infotainment system (often with Apple CarPlay and Android Auto compatibility in later iterations of the facelift), and cloth upholstery. Higher trim levels, such as the SLT, added features like leather upholstery, heated front seats, a power liftgate, and a premium audio system. Optional extras included a navigation system, a rear-seat entertainment system, and various driver-assistance features.
Chassis & Braking
The Acadia’s chassis featured an independent front suspension with McPherson struts and an independent multi-link rear suspension. This setup aimed to provide a comfortable ride while maintaining reasonable handling. Front and rear brakes were ventilated discs, providing adequate stopping power for the vehicle’s weight. ABS (Anti-lock Braking System) was standard. The steering system utilized a hydraulic power steering rack and pinion, offering a reasonably responsive feel. The front-wheel-drive configuration contributed to a lower curb weight compared to AWD models, which slightly improved handling and fuel economy.
Market Reception & Comparison
The 2015-2016 GMC Acadia with the 3.6L V6 and automatic transmission was generally well-received by critics as a practical and comfortable family SUV. However, some reviewers noted that its fuel economy was not class-leading, and its handling was not as engaging as some competitors. Compared to the base four-cylinder engine (when offered), the V6 provided a significant improvement in performance. Compared to the available AWD versions, the FWD model offered a slight fuel economy advantage but less all-weather capability. The Acadia competed with vehicles like the Honda Pilot, Toyota Highlander, and Ford Explorer.
Legacy
The LLT 3.6L V6 engine proved to be a relatively reliable powertrain in the Acadia. While some owners have reported minor issues with oil consumption over time, major engine failures were not common. The six-speed Hydra-Matic automatic transmission also demonstrated good durability. On the used car market, these Acadia models represent a relatively affordable option for families seeking a spacious and comfortable SUV. Maintenance costs are generally reasonable, and parts availability is good. However, prospective buyers should be aware of the potential for oil consumption issues and should ensure that the vehicle has been properly maintained.
