There are 2 stored owner reports matching the brakes leading-label group for the 2012 GMC Canyon in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)TL* THE CONTACT OWNS A 2012 GMC CANYON. WHILE DRIVING 70 MPH, THE BRAKE PEDAL EXTENDED TO THE FLOOR WHEN IT WAS DEPRESSED. THE CONTACT HAD TO PUMP THE BRAKE PEDAL EACH TIME TO STOP THE VEHICLE. THE DEALER DIAGNOSED THAT THE MASTER CYLINDER FAILED AND NEEDED TO BE REPLACED FOR THE THIRD TIME. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 26,000. UPDATED 8/19/15*CN UPDATED 10/19/2017*CN
BRAKES: I purchased vehicle September 25, 2012. This problem has occurred since I purchased the vehicle. It does not happen all the time. The problem is the brakes lockup and the steering wheel shudders and the vehicle pulls to the right. The vehicle makes a griding noise. It will NOT stop immediately when you put on the brakes. The brake pedal jumps up and down and makes a grinding noise. The vehicle pulls to the right and jumps up and down. In answer to the next question: This problem has happened since I purchased the vehicle.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.