Standard/OEIn stock
$12.66
10 items in stock
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14-WC37778• Rear• Drum Brake Wheel Cylinder
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GeoBrakes carries OEM-grade drum brake wheel cylinders confirmed to fit the Pontiac Grand Am, the hydraulic actuators at the top of each drum brake assembly that convert brake fluid pressure into the mechanical force that pushes the Grand Am shoes against the drum. Available in new and remanufactured options for your Grand Am, every cylinder is bored to OEM specifications
Standard/OE$12.66
10 items in stock
Select your vehicle to see compatible products and accurate pricing
The drum brake wheel cylinder on the Pontiac Grand Am is the hydraulic component that actuates your Grand Am drum brake shoes every time you press the brake pedal. Brake fluid pressure from the master cylinder enters the Grand Am wheel cylinder and acts equally on two opposed pistons, pushing them outward simultaneously toward each shoe on the Pontiac Grand Am. A leaking Grand Am wheel cylinder actively bleeds hydraulic pressure from the brake circuit and contaminates the brake shoes with fluid, both of which directly compromise your ability to stop the Pontiac Grand Am.
Pontiac Grand Am drum brake wheel cylinders are particularly vulnerable to corrosion in American road salt conditions. Salt water penetrates the dust boots over time on the Grand Am, attacking the cylinder bore surface. Once the Pontiac Grand Am bore is pitted, new piston cup seals cannot maintain a leak-free seal. Internally corroded Grand Am cylinders must be replaced, not rebuilt. Vehicles in high-salt urban environments often require Grand Am wheel cylinder replacement on the same service interval as brake shoes.
GeoBrakes stocks both new OEM-specification wheel cylinders and quality remanufactured units for the Pontiac Grand Am. New cylinders are the stronger choice for Grand Am vehicles in high-corrosion environments. Remanufactured units offer excellent value for Pontiac Grand Am vehicles in moderate conditions where the original bore was sound. Our vehicle selector confirms the correct Grand Am cylinder, right bore diameter, port location, and mounting configuration, for your Grand Am drum brake assembly before purchase.
Can I drive my Pontiac Grand Am with a leaking wheel cylinder?
No. A leaking Grand Am cylinder actively loses hydraulic pressure from the brake circuit, reducing stopping force on your Pontiac Grand Am over time. Brake fluid that reaches the Grand Am shoes renders the friction material ineffective. A leaking Pontiac Grand Am wheel cylinder is an immediate safety concern that requires urgent attention.
Should I replace both wheel cylinders on my Pontiac Grand Am at the same time?
Yes. If one Grand Am cylinder has leaked or seized due to age and corrosion, the cylinder on the opposite side of the Pontiac Grand Am has experienced identical conditions and is at a similar stage of deterioration. Replacing both ensures balanced hydraulic pressure on your Grand Am and avoids a second service call within months.
Do I need to bleed the brakes on my Pontiac Grand Am after replacing a wheel cylinder?
Yes. Replacing a Grand Am wheel cylinder opens the hydraulic circuit, allowing air to enter. After installation on the Pontiac Grand Am, the entire rear brake circuit must be bled to remove all air and restore a firm, consistent brake pedal on your Grand Am.