Buick LaCrosse 2017-2019 Drivetrain Specifications

The 2017-2019 Buick LaCrosse features a 3.6L V6 engine or a 2.5L 4-cylinder engine, paired with an 8-speed automatic transmission. The drivetrain includes a front-wheel-drive (FWD) system as standard, with optional all-wheel-drive (AWD) on select trims. The 3.6L engine produces 310 horsepower and 268 lb-ft of torque, while the 2.5L engine delivers 194 horsepower and 187 lb-ft of torque. Both engines are compatible with regular unleaded fuel and feature direct fuel injection and variable valve timing for optimized performance.

Regular maintenance for the 2017-2019 Buick LaCrosse drivetrain includes oil changes every 5,000 to 7,500 miles, tire rotations every 7,500 miles, and inspection of drivetrain components such as the CV axles and joints. Fluid checks for transmission and differential fluids should be performed every 15,000 miles, with replacements as needed. Additionally, ensure proper tire pressure and alignment to maintain optimal drivetrain performance and reduce wear.

To replace a CV axle on the 2017-2019 Buick LaCrosse, start by raising the vehicle and removing the wheel. Disconnect the battery to prevent any electrical system interference. Remove the caliper and rotor, then disconnect the CV axle from the hub assembly using a wrench or socket. Carefully pull the CV axle out of the transmission and install the new one, ensuring proper alignment. Reassemble all components in the reverse order of removal and torque bolts to specifications. Always refer to the service manual for detailed instructions and safety precautions.

To diagnose drivetrain vibrations or noises in the 2017-2019 Buick LaCrosse, inspect the CV axles and joints for wear or damage. Check for loose or damaged suspension components, such as ball joints or bushings. Inspect the tires for uneven wear or improper balancing, which can cause vibrations. If noises persist, check the transmission and differential fluids for proper levels and condition. Use a scan tool to check for any trouble codes in the vehicle's computer system that may indicate drivetrain-related issues.

To optimize the performance of the 2017-2019 Buick LaCrosse drivetrain, ensure proper tire inflation and alignment to reduce strain on the system. Regularly maintain transmission and differential fluids to prevent overheating and wear. Avoid aggressive driving habits, such as rapid acceleration or deceleration, which can place additional stress on drivetrain components. Additionally, consider using high-quality fuel to maintain engine performance and efficiency. For AWD models, ensure the system is functioning properly by checking for any electronic or mechanical faults.