Buick LaCrosse 2017-2019 Brakes Specifications

The 2017-2019 Buick LaCrosse features a braking system with ventilated front and rear disc brakes. The front rotors measure 12.6 inches in diameter, while the rear rotors are 11.7 inches. The system utilizes four-wheel ABS with electronic stability control. Brake pads are designed for quiet operation and durability, with a minimum thickness of 0.12 inches for safe replacement. The brake fluid recommended is GM spec 9986118 or equivalent DOT 4 fluid. Always ensure compatibility with OEM or aftermarket components for optimal performance.

Brake maintenance for the 2017-2019 Buick LaCrosse should be performed every 15,000 miles or as needed. Inspect brake pads for wear, ensuring they are above the minimum thickness of 0.12 inches. Check rotors for excessive wear or warping and measure brake fluid levels, topping up with GM spec 9986118 fluid if necessary. Inspect brake lines for signs of damage or leaks and replace worn or damaged components promptly. Always refer to the owner's manual or service manual for detailed procedures.

To replace the brakes on the 2017-2019 Buick LaCrosse, start by raising the vehicle and removing the wheels. Remove the caliper bolts and slide the caliper off the rotor, taking care not to damage the brake hose. Remove the old pads and install the new ones, ensuring proper alignment. For rotor replacement, remove the rotor screws and replace the rotor with a new one. Reinstall the caliper and tighten all bolts to the specified torque (typically 40-50 ft-lbs). Bleed the brake system if new lines or components are installed. Test the brakes by driving cautiously and ensuring proper function.

If the brake pedal feels spongy, check the brake fluid level and look for signs of air in the system. If the vehicle pulls to one side while braking, inspect for uneven brake pad wear or misaligned brake components. For brake noise, inspect the pads and rotors for wear or debris. If the ABS light is on, use a scan tool to check for trouble codes and address any issues with the ABS sensors or modules. Always refer to the service manual for detailed diagnostic procedures.

To optimize brake performance, ensure proper bedding-in of new brake pads by driving carefully and avoiding hard braking for the first 100 miles. Upgrade to high-performance brake pads and rotors if desired, ensuring they meet OEM specifications. Maintain proper brake fluid levels and flush the system every 30,000 miles to prevent contamination. Avoid excessive heat buildup by driving moderately and ensuring proper cooling of the braking system. Consider upgrading to performance-oriented brake fluid with a higher boiling point for improved consistency under heavy use.