When it's time to replace the rear drum brakes on your GM vehicle, go with the brand that knows it best: ACDelco GM Original Equipment. This part (number 19317047) is the real deal – it's the GM-recommended replacement that's manufactured to the same specifications as the part that came on your car or truck from the factory. That means you get the exact fit, form, and function you need, with no annoying retrofitting required. These brake shoes are built with quality, reliable friction material that's bonded/riveted to a sturdy steel backing, designed for the performance and service life you expect. They even come with a rust-preventive coating to help fight off corrosion and last longer. Choosing GM OE parts like these from ACDelco is the smart way to maintain your vehicle's safety and performance. Just a standard but important note: this product contains chemicals known in California to cause cancer and reproductive harm. For safe brake work, trust the original equipment quality.