Standard/OEIn stock
$12.52
10 items in stock
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14-WC37048• Rear• Drum Brake Wheel Cylinder
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GeoBrakes carries OEM-grade drum brake wheel cylinders confirmed to fit the Gmc Jimmy, the hydraulic actuators at the top of each drum brake assembly that convert brake fluid pressure into the mechanical force that pushes the Jimmy shoes against the drum. Available in new and remanufactured options for your Jimmy, every cylinder is bored to OEM specifications
Standard/OE$12.52
10 items in stock
Select your vehicle to see compatible products and accurate pricing
The drum brake wheel cylinder on the Gmc Jimmy is the hydraulic component that actuates your Jimmy drum brake shoes every time you press the brake pedal. Brake fluid pressure from the master cylinder enters the Jimmy wheel cylinder and acts equally on two opposed pistons, pushing them outward simultaneously toward each shoe on the Gmc Jimmy. A leaking Jimmy 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 Gmc Jimmy.
Gmc Jimmy drum brake wheel cylinders are particularly vulnerable to corrosion in American road salt conditions. Salt water penetrates the dust boots over time on the Jimmy, attacking the cylinder bore surface. Once the Gmc Jimmy bore is pitted, new piston cup seals cannot maintain a leak-free seal. Internally corroded Jimmy cylinders must be replaced, not rebuilt. Vehicles in high-salt urban environments often require Jimmy 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 Gmc Jimmy. New cylinders are the stronger choice for Jimmy vehicles in high-corrosion environments. Remanufactured units offer excellent value for Gmc Jimmy vehicles in moderate conditions where the original bore was sound. Our vehicle selector confirms the correct Jimmy cylinder, right bore diameter, port location, and mounting configuration, for your Jimmy drum brake assembly before purchase.
Can I drive my Gmc Jimmy with a leaking wheel cylinder?
No. A leaking Jimmy cylinder actively loses hydraulic pressure from the brake circuit, reducing stopping force on your Gmc Jimmy over time. Brake fluid that reaches the Jimmy shoes renders the friction material ineffective. A leaking Gmc Jimmy wheel cylinder is an immediate safety concern that requires urgent attention.
Should I replace both wheel cylinders on my Gmc Jimmy at the same time?
Yes. If one Jimmy cylinder has leaked or seized due to age and corrosion, the cylinder on the opposite side of the Gmc Jimmy has experienced identical conditions and is at a similar stage of deterioration. Replacing both ensures balanced hydraulic pressure on your Jimmy and avoids a second service call within months.
Do I need to bleed the brakes on my Gmc Jimmy after replacing a wheel cylinder?
Yes. Replacing a Jimmy wheel cylinder opens the hydraulic circuit, allowing air to enter. After installation on the Gmc Jimmy, the entire rear brake circuit must be bled to remove all air and restore a firm, consistent brake pedal on your Jimmy.