Buick Regal 2018-present Drivetrain Specifications

The 2018-Present Buick Regal features a drivetrain with options including a 2.0L turbocharged 4-cylinder engine producing 250 horsepower and 260 lb-ft of torque, paired with an 8-speed automatic transmission. It is available in both front-wheel drive (FWD) and all-wheel drive (AWD) configurations. The AWD system includes an active twin-clutch rear differential for enhanced traction and control. The drivetrain is compatible with premium gasoline and features electronic limited-slip differential technology for improved handling.

Regular maintenance for the Buick Regal drivetrain includes oil changes every 5,000 to 7,500 miles, transmission fluid checks every 30,000 miles, and differential fluid replacement every 30,000 miles. Inspections of the driveshaft, U-joints, and CV axles should be performed every 15,000 miles. It is recommended to follow the schedule outlined in the owner's manual and address any unusual noises or vibrations promptly.

To replace drivetrain components, start by raising the vehicle on a lift and removing the underbody panels. Drain the appropriate fluids (e.g., transmission or differential fluid). Disconnect the electrical connectors and hydraulic lines, then remove the mounting brackets and bolts. Carefully extract the component and install the new one in reverse order. Use genuine GM parts and refer to the service manual for specific torque specifications and procedures.

Common drivetrain issues include vibration during acceleration or deceleration, which may indicate imbalance in the driveshaft or worn U-joints. Noise during operation could signal worn CV axles or differential components. Check fluid levels and condition, and use an OBD-II scanner to identify any trouble codes. Inspect all connections and joints for wear or damage and address any issues promptly to prevent further damage.

To optimize drivetrain performance, ensure proper tire pressure and alignment, as misaligned wheels can reduce traction and efficiency. Use high-performance lubricants for transmission and differential fluids. Avoid aggressive driving that may overheat drivetrain components. Consider upgrading to performance-oriented drivetrain components, such as a high-strength driveshaft or performance-tuned differential, and ensure regular maintenance is performed to maintain optimal functionality.