Brake Diagnostics · Repair Guides · GMC News
Know your brakes. Fix it right the first time.
244+ step-by-step guides on brake resets, caliper torque specs, part sourcing, and the latest Sierra, Acadia, Yukon and Canyon updates — written for owners who do their own wrenching.
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YukonGMC Yukon Trailer Brake Troubleshooting
Most Yukon trailer brake problems trace back to a handful of usual suspects: a dirty or damaged 7-way connector, a blown fuse, a controller gain setting that's off, or worn electromagnets on the trailer itself. Here's how to work through them in order.
SierraGMC Sierra Trailer Brake Gain Settings — 1500 vs 2500
The gain setting on a GMC Sierra's integrated trailer brake controller determines how firmly the trailer's brakes apply relative to the truck's, and GM's own procedure calls for setting it by test drive rather than by a preset number. Because a 2500 is typically hitched to heavier, differently loaded trailers than a 1500, the two trucks often land on different gain numbers even though the adjustment scale and test method are identical.
SierraGMC Sierra 1500 vs 2500 Brake Pad Differences
The GMC Sierra 2500 runs a heavier-duty brake system than the Sierra 1500, typically built around larger rotors and calipers sized for its higher GVWR. Because the two trucks are engineered around different weight ratings, their brake pads and rotors are cataloged separately and are not designed to be swapped between them.
CanyonGMC Canyon Brake Caliper Replacement Cost & Guide
A sticking piston, a fluid leak, or a truck that pulls to one side under braking usually means a GMC Canyon caliper needs replacing, not just new pads. Expect to pay roughly $300 to $900 per caliper for parts and labor, with a full front-axle job often landing between $600 and $1,500.
AcadiaBest Brake Rotors for the GMC Acadia — Buyer's Guide
Most GMC Acadia drivers get the best combination of quiet operation, long life, and value from OEM-style blank rotors, while slotted rotors are worth the upgrade for drivers who tow or spend a lot of time on mountain grades. Drilled and cross-drilled rotors carry a cracking risk that makes them a poor fit for a family SUV used for daily hauling.
SierraWhy Won't My GMC Sierra's Brake Warning Light Turn Off?
If your Sierra's brake pads and fluid both check out fine but the warning light stays lit, the cause is usually a stuck parking brake switch, a faulty fluid level sensor, or an electrical fault rather than the brakes themselves. Here's how to narrow it down.
SierraHow to Bleed ABS Brakes on a GMC Sierra
Standard two-person bleeding can leave air trapped inside the ABS modulator itself, which is why some Sierras keep a soft pedal even after a textbook bleed. Here's when that happens and how a scan tool-driven ABS bleed clears it.
YukonGMC Yukon Parking Brake Reset After Pad Replacement
Yukons built with an electronic parking brake need that system put into service mode before the rear pads come off, then reset once the new pads are in. Here's how the process works and what to check if it doesn't reset cleanly.
TerrainGMC Terrain Brake Reset After Rotor Replacement
Second-generation Terrains (2018 and newer) use an electronic parking brake that has to be put into service mode before the rear rotors come off, then reset afterward. Earlier Terrains use a conventional lever brake with no reset required.