There are 1 owner-reported tires & wheels complaints for the 2020 GMC Terrainin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
WHEN REVERSING OUT OF A PARKING SPOT, BRAKES FAILED CAUSING ACCIDENT. MULTIPLE ATTEMPTS TO DEPRESS BRAKE PEDAL WITH NO BRAKING. HIT A PARKED CAR. AFTER SHUTTING CAR OFF AND ATTEMPTING TO MOVE VEHICLE BRAKES DID ENGAGE AND RESPOND CORRECTLY. REAR DAMAGE TO TERRAIN OCCURRED REQUIRING TOWING.
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 26, 2026