Q: What is the caution regarding the master cylinder and ABS hydraulic unit/motor pack on Chevrolet Beretta equipped with ABS?
A: On ABS-equipped models, don't detach the brake master cylinder and ABS unit/motor pack together. For brake master cylinder replacement, seek a dealer service department or qualified shop. To remove the brake master cylinder, disconnect the battery, unplug the fluid sensor, remove brake line fittings and mounting nuts. Discard any fluid left in the reservoir. In a vise, detach the brake master cylinder components, clean and inspect. Reassemble with new seals and lubricate the proportioner valves. Check the reservoir for damage, install new O-rings, and secure with retaining pins. Bench bleed the brake master cylinder before installation and bleed brakes at each wheel.