Buick LaCrosse 2010-2016 Drivetrain Specifications

The 2010-2016 Buick LaCrosse features a drivetrain with a 2.4L ECOTEC I-4 engine or an optional 3.6L V6 engine, both paired with a 6-speed automatic transmission. The drivetrain is available in front-wheel drive (FWD) or all-wheel drive (AWD) configurations. The 2.4L engine produces 182 horsepower and 172 lb-ft of torque, while the 3.6L V6 produces 303 horsepower and 264 lb-ft of torque. The drivetrain is compatible with synthetic oil and requires regular maintenance for optimal performance.

Regular maintenance for the 2010-2016 Buick LaCrosse drivetrain includes changing the transmission fluid every 30,000 to 60,000 miles, depending on driving conditions. The differential fluid should be replaced every 30,000 miles. Inspect the belts and hoses every 15,000 miles and replace them as needed. Additionally, check the tire pressure monthly and ensure proper wheel alignment. Follow the recommended maintenance schedule in the owner's manual for optimal performance and longevity.

To replace the serpentine belt, start by locating the belt tensioner on the engine. Use a wrench to release the tensioner and remove the old belt. Inspect the pulleys and tensioner for wear or damage. Install the new belt, ensuring it is properly seated on all pulleys. Tighten the tensioner gradually and check the belt alignment. Start the engine and let it run for a few minutes to test the belt. Refer to the service manual for specific instructions and diagrams.

Common drivetrain issues include vibrations, noises, or reduced performance. Check for worn or loose belts, low fluid levels, or damaged pulleys. If the vehicle hesitates or jerks during acceleration, inspect the transmission fluid level and condition. For AWD models, ensure the transfer case and differential fluids are at the correct levels. Use an OBD-II scanner to check for error codes and refer to the service manual for diagnostic procedures. Address any issues promptly to prevent further damage.

To optimize drivetrain performance, ensure regular maintenance is up to date, including fluid changes and inspections. Use high-quality synthetic fluids and replace worn components promptly. For improved fuel efficiency, maintain proper tire pressure and avoid aggressive driving. For AWD models, ensure the system is functioning correctly and transfer case fluid is clean. Consider upgrading to high-performance belts or pulleys if you frequently tow or drive in extreme conditions. Always follow manufacturer recommendations for modifications.