In brief, the 2009 Buick Enclave is equipped with a 3.6-liter V6 engine delivering about 275 horsepower, paired with a six-speed automatic transmission. This powertrain is shared with other GM Lambda-platform SUVs of the era and is designed for smooth, family-oriented performance.
Engine type and output
The Enclave’s drivetrain for 2009 centers on GM’s 3.6-liter V6, a gasoline-powered engine known for its balance of power and refinement in a three-row crossover. Below are the core specifications commonly cited for this model year.
Key specifications for the 2009 Enclave’s engine are listed below.
- Displacement: 3.6 liters
- Configuration: V6
- Valvetrain: Dual overhead cam (DOHC) with variable valve timing
- horsepower: around 275 hp
- Torque: around 251 lb-ft
- Transmission: 6-speed automatic
- Drivetrain: Front-wheel drive standard; all-wheel drive available
- Fuel economy (approximate): around 16 mpg city / 23 mpg highway with AWD; slightly higher with FWD
In practical terms, this engine provides ample highway passing power and solid mid-range torque for a vehicle of its size, while maintaining reasonable efficiency for a family SUV of the era. The 6-speed automatic complements the V6 to deliver smooth shifts and confident acceleration for daily driving and long trips.
Context and performance notes
The 3.6-liter V6 in the Enclave is part of GM’s Lambda platform family, which also underpinned related models like the GMC Acadia and Saturn Outlook. This configuration emphasizes a balance between comfort, quiet operation, and adequate towing capability for a three-row crossover. While not a high-performance engine, it is designed to meet typical family-SUV needs, including highway merging, steep grade climbs, and steady cruising.
Summary
The 2009 Buick Enclave uses a 3.6-liter V6 engine with variable valve timing, producing roughly 275 horsepower and 251 lb-ft of torque, paired with a 6-speed automatic transmission. It is the standard powertrain for this model year, offering a blend of smooth performance, respectable towing capability, and family-friendly efficiency for a mid-size three-row SUV.