Buick Envision 2016-2020 Drivetrain Specifications

The 2016-2020 Buick Envision features a front-wheel-drive (FWD) or all-wheel-drive (AWD) drivetrain, depending on the trim level. The drivetrain is paired with a 2.5L 4-cylinder engine or an optional 2.0L turbocharged 4-cylinder engine. The transmission is a 6-speed automatic with electronic range select. The FWD models have a final drive ratio of 3.50, while the AWD models feature an electronic limited-slip differential and a 3.17 final drive ratio. The drivetrain is compatible with regular unleaded gasoline and offers an EPA-estimated fuel economy of up to 22 MPG city and 29 MPG highway for FWD models, and 20 MPG city and 26 MPG highway for AWD models.

Regular maintenance is essential for the drivetrain's longevity. Every 5,000 to 7,500 miles, the transmission fluid and differential fluid should be checked and replaced as needed. The driveshaft and CV joints should be inspected every 15,000 miles. The vehicle should be serviced every 30,000 miles for a detailed drivetrain inspection, including the propeller shaft, universal joints, and axle shafts. It is recommended to use genuine GM parts and follow the maintenance schedule outlined in the owner's manual to ensure optimal performance and prevent premature wear.

Installing or replacing drivetrain components requires specialized tools and knowledge. Start by safely lifting the vehicle and supporting it with jack stands. For CV joint replacement, remove the wheel, caliper, and rotor, then disconnect the CV joint from the drivetrain. For driveshaft replacement, mark the alignment, remove the center bearing, and slide the driveshaft out. Always follow proper torque specifications and align components accurately. It is strongly recommended to consult a certified mechanic or refer to the service manual for detailed instructions to avoid damage or injury.

Common drivetrain issues include unusual noises, vibrations, or loss of traction. Start by checking the fluid levels and condition of the transmission and differential. Inspect the driveshaft and CV joints for wear or damage. If vibrations occur, ensure proper tire balance and alignment. For AWD models, check the electronic limited-slip differential for faults. If issues persist, use an OBD-II scanner to retrieve trouble codes and refer to the service manual for diagnostic procedures. Addressing problems early can prevent costly repairs and ensure reliable performance.

To optimize drivetrain performance, ensure proper tire pressure and alignment, as misaligned tires can reduce traction and efficiency. Regularly service the transmission and differential fluids to maintain smooth operation. Avoid extreme driving conditions and heavy loads that may strain the drivetrain. For improved traction in AWD models, enable the electronic limited-slip differential when driving in inclement weather. Additionally, consider upgrading to high-performance drivetrain components if you frequently tow or drive in challenging terrains. Always follow the manufacturer's guidelines for modifications to maintain warranty coverage.