There are 6 owner-reported brakes complaints for the 2015 GMC Canyonin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2015 GMC Canyon. The contact stated that upon taking the vehicle to the dealer for service, the dealer made her aware of a failure with the vacuum pump. The check engine warning light was illuminated. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 15V278000 (Service Brakes, Hydraulic) but the VIN was not included. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 137,000.
Service brake assist light comes on and Vehicle loses braking power. Brake pedal gets hard and unable to stop if needed and has potential of injury / accidental death. This similar problem has been recalled in the larger trucks /SUVs due to safety issues. It appears it's also happening in the smaller truck's canyon and Colorado's as well, however no recalls. Many blogs online discussing the issues and failures of the braking system.
LOW SPEED BRAKING BECOMES DIFFICULT AS RESISTANCE IN THE PEDAL MAKES IT DIFFICULT TO STOP THE VEHICLE WHEN IN MOTION AT LOWER SPEEDS. THE VEHICLE ALSO LEAKS FLUID. DEALERSHIP INFORMS ME THE VACUUM PUMP HAS A LEAK WHICH MAY BE CAUSING THIS ISSUE AND THE LEAK. VEHICLE HAS BEEN LEAKING FLUID, AN OIL OR OIL LIKE SUBSTANCE FOR ABOUT 10 MONTHS.
I WAS PARKED. WHEN I STARTED THE TRUCK I PUT IT IN REVERSE. WHILE BACKING UP I APPLIED THE BRAKES. THE POWER FOR THE BRAKES WAS GONE. I HAD TO SLAM AS HARD AS I COULD TO STOP THE TRUCK. A VERY SCARY SITUATION. I HEARD THERE WAS A RECALL FOR THIS PROBLEM. I WENT TO THIS WEBSITE TO FIND OUT. IT STATES THERE ARE NO RECALLS ON THIS TRUCK. THIS IS A VERY DANGEROUS PROBLEM. IF GMC PUTS A PRODUCT OUT LIKE THIS THEY SHOULD FIX THE PROBLEM. I TOOK IT TO THE DEALER ALL HE SAID TO ME WAS IT DANGEROUS AND IT WOULD COST THIS MUCH TO CHECK IT OUT. NOTHING ABOUT IT WAS A RECALL OR NOT. PLEASE LET ME KNOW IF THIS IS ON THEM AS I STILL HAVE TO DRIVE THE TRUCK.
REAR BRAKE SQUEAK AND LONG STOPPING DISTANCE. ANTI-LOCKING FUNCTION DOES NOT ENGAGE AND THE BRAKING SYSTEM DOES NOT SKID/LOCK UP THE TIRES IN AN EMERGENCY STOP. REAR PADS DO NOT MATCH SIZE OF THE REAR DISCS. RUSTY DUST BUILD UP. GM HAS ATTEMPTED TO FIX 3X AND INDICATES THAT THERE IS NO FIX FOR THE ISSUE. SQUEAKING ON EVERY STOP WILL NOT ALLOW DRIVER TO DISCERN IF THE PADS ARE WORN OR NOT.
BRAKES SQUEAK ON EVERY STOP. WILL NOT BE ABLE TO DETERMINE WHEN THE PADS NEED CHANGED SINCE THE SQUEAK IS SAME AS THE PAD WORN INDICATORS. ALSO VEHICLE WILL NOT STOP WITH ANTILOCK BRAKES OR SKID THE TIRES. IT STOPS, BUT IS MUSHY.
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.
Data synced from NHTSA on Apr 25, 2026