There are 4 owner-reported suspension complaints for the 2011 GMC Terrainin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Transmission and control arms
I WAS HAVING THE STRUTS AND SHOCKS LOOKED AT IN MY CAR. WHILE THE WORKER FINISHED THE JOB, HE PUT THE CAR DOWN AND TOOK IT FOR A TEST DRIVE TO MAKE SURE IT WAS GOOD TO GO. ONE THAT TEST DRIVE, HE SAID SOMETHING DID NOT SEEM CORRECT. AFTER HE GOT IT BACK TO THE SHOP AND BACK ON THE RACK, THE FRAME WAS CRACKED AND RUSTED THROUGH. THIS WAS NOT THE CASE WHEN MY CAR WAS PREVIOUSLY WORKED ON BY GETTING A NEW BALL JOINT BACK IN THE FALL OF 2019. *TR
ENGINE PROBLEM
TL* THE CONTACT OWNS A 2011 GMC TERRAIN. ON SEVERAL OCCASIONS, WHILE ATTEMPTING TO DRIVE, THE KEY WAS LOCKED IN THE IGNITION. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE TUMBLERS MAY NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE VEHICLE WAS TAKEN TO GEM CITY MOTORS (406-433-3120, 701 S CENTRAL AVE, SIDNEY, MT 59270) WHERE NO DIAGNOSTIC FAILURE CODES WERE FOUND AND THE FAILURE COULD NOT BE DUPLICATED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND DID NOT ASSIST. THE CONTACT WAS ADVISED TO CALL NHTSA. THE APPROXIMATE FAILURE MILEAGE WAS 42,000. THE VIN WAS UNAVAILABLE.
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