GeoBrakes stocks complete brake drum kits confirmed to fit the Gmc G3500, pairing OEM-grade brake drums at the correct inner diameter for the G3500 with matched drum brake shoes and hardware for a full rear drum brake overhaul on your Gmc G3500 in a single package. Every kit ensures drums and shoes are replaced together on the G3500, the only way to achieve correct contact geometry and maximum service life from both components. Each kit ships with a 100% fitment guarantee and free delivery across US on orders over $99.
A brake drum kit for the Gmc G3500 addresses the most common brake service shortcut: replacing shoes on a worn G3500 drum, or fitting new drums with glazed, worn shoes. Either combination prevents correct break-in on the Gmc G3500. New shoes have a specific arc radius that must contact a fresh drum surface across the full lining width on your G3500. A GeoBrakes drum kit eliminates that incompatibility by delivering matched drums and shoes confirmed for your Gmc G3500 in a single order.
The kit for your Gmc G3500 includes OEM-spec cast-iron brake drums at the correct inner diameter for the G3500 for both left and right rear wheels, drum brake shoes with OEM-grade friction lining matched to the Gmc G3500 drum bore and wheel cylinder specification, a brake hardware kit with return springs, hold-down hardware, and self-adjusters specific to the G3500, and drum retaining hardware where required by the Gmc G3500 application.
Road salt and freeze-thaw cycles deteriorate every component in the Gmc G3500 drum brake system over the same service interval. By the time a G3500 drum is worn, the shoes are typically at or near minimum thickness, the hardware is corroded, and the wheel cylinder boots are deteriorating on your Gmc G3500. Replacing drums and shoes alone while leaving worn springs and seized adjusters on the G3500 produces a service that underperforms within months.
Drum and shoe arc radius must match exactly for correct contact geometry on the Gmc G3500. An incorrect drum diameter or wrong-spec shoe lining for the G3500 produces immediate uneven wear and noise. Every kit in the GeoBrakes catalogue is assembled for the Gmc G3500, drum diameter, shoe arc, and hardware spring rates all confirmed as a matched set specific to the G3500.
How do I know if I need a basic or full-service kit for my Gmc G3500?
A basic kit for the Gmc G3500 is appropriate when the wheel cylinders have been recently replaced and show no signs of leaking. A full-service kit is the stronger choice during a high-mileage G3500 overhaul, particularly on American Gmc G3500 vehicles with significant winter salt exposure.
Should I replace drum kits on both rear wheels of my Gmc G3500 at the same time?
Yes. Always replace drum brake components on the Gmc G3500 as an axle set, both left and right rear, to maintain balanced braking force. Drums and shoes at different wear stages on the G3500 create uneven rear braking that pulls the vehicle to one side.
Can I install a brake drum kit on my Gmc G3500 myself?
Rear drum brake service on the Gmc G3500 is a moderately advanced DIY task. It requires removing the drum, dismantling the shoe assembly on the G3500, correctly routing return springs, and adjusting shoes to the correct drum clearance. A service manual specific to the Gmc G3500 is essential.