Q: How do you replace the wheel cylinder on Chevrolet Express and GMC Savana?
A: To replace the wheel cylinder on a vehicle, start by raising the rear of the vehicle and supporting it securely on jackstands. Block the front wheels to prevent the vehicle from rolling. Next, remove the Brake Shoe assembly and clean any dirt or foreign material from around the wheel cylinder. Disconnect the Brake Line, being careful not to pull it away from the wheel cylinder. Then, remove the wheel cylinder mounting bolts and detach the wheel cylinder from the brake backing plate. Immediately plug the brake line to prevent fluid loss and contamination. To install the new wheel cylinder, place it in position and install the bolts finger tight. Connect the brake line to the cylinder, ensuring it is not cross-threaded, and tighten the wheel cylinder mounting bolts to the correct torque specifications. Finally, tighten the brake line fitting securely, install the brake shoe assembly, bleed the brakes, and carefully check the operation of the brakes before driving the vehicle.