Wilcoxson GMC – Why are my GMC Acadia brakes making grinding noise?
A grinding sound under braking is a signal your GMC Acadia needs prompt attention. In many cases, the brake pad material has worn thin and the metal backing is contacting the rotor, which can quickly increase stopping distances and damage additional components. Other culprits include a pebble lodged between the rotor and dust shield, surface rust after a rainstorm or car wash that hasn’t burned off, a bent shield rubbing the rotor, dry or seized caliper slide pins, or a wheel bearing allowing excessive movement. If you hear sustained metal-on-metal sounds, reduce speed, avoid hard stops, and find a safe place to park. At Wilcoxson GMC, we begin with a road test to duplicate the noise, then perform a multi-point brake inspection—measuring pad and rotor thickness, checking rotor runout, examining caliper operation and hardware, inspecting the Anti-lock Braking System (ABS) for codes, and verifying brake fluid condition. Based on our findings, we’ll explain whether resurfacing or replacement is appropriate, install GM Genuine Parts engineered for your Acadia, torque wheels to spec, and properly bed-in new pads to help prevent future noise. Every step is documented so you know exactly what we found and why it matters. Always refer to your owner’s manual and contact the manufacturer or your dealer for details specific to your model year and equipment.
If you’re unsure what to do next, start with a few simple observations you can share with our team: note when the grinding occurs (cold mornings, after rain, only during light braking, or all the time), whether you feel vibration in the pedal or steering wheel, and if any warning lamps illuminate. Look through the wheel spokes—heavy grooves on the rotor or lots of metallic dust may indicate metal-on-metal contact. Avoid spraying high-pressure water into the brakes to “wash” the sound away, and skip long drives until the system is inspected. When you arrive, our Certified Service technicians will provide a clear estimate, prioritize safety-related items, and get you back on the road with confidence using GM Genuine Parts. We offer convenient scheduling, thorough inspections, and straightforward communication—serving in Pueblo, CO, La Junta, and Canon City. This content is for general information only; procedures and maintenance intervals can vary, so contact the manufacturer or your dealer for details. Ready to resolve that grinding noise and protect your stopping power? Request more information or schedule service today—we’re here to help, answer your questions, and keep your Acadia braking smoothly.
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