Your Chevy wheel cylinder is a cylinder where the movable pistons convert hydraulic fluid pressure into mechanical force. The pistons located within the cylinder move the brake shoes or pads against the braking force of the drum or the rotor. There is one cylinder for each wheel. It is actually composed of a single-bore cylinder casting, internal compression spring, two pistons, two rubber cups or seals, two rubber boots in order to block the dirt and water from entering. In the drum brakes, the wheel cylinder is fitted with the push rods that extend from the outer side of each piston through a rubber boot. On the other hand, on the disk brakes, the wheel cylinder is part of the caliper. Once the brake pedal is pushed, it moves the pistons within the master cylinder. The fluid which is under pressure causes the wheel cylinders' pistons to move and force the shoes or pads against the brake drums or rotors. A foot on the brake pedal pushes the fluid against the sealed pistons inside the calipers and wheel cylinders. The problem is that brake fluid attracts moisture by its very nature of being hygroscopic. This moisture eats into the steel of the caliper or the wheel cylinder and the hydraulic seal is lost hence brake failure is the result. A wheel cylinder leak will generate a warning light long before brake failure occurs. This leak is usually detected while changing the brake shoes. The moisture trapped in the brake fluid has eaten away at previously smooth walls of the wheel cylinder and brake fluid has escaped past rubber piston inside. In order to avoid this scenario, you have to flush and bleed the whole braking system of fluid through this, corrosion would not likely happen. To detect whether the wheel cylinder should be replaced, you need to have it checked by a trusted mechanic. If the wheel cylinder suggests replacement, then go directly to our site and find the best Chrysler wheel cylinder you can find.