There are 3 owner-reported body & structure complaints for the 2017 GMC Terrainin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The latch for the rear hatch/door does not release every time. There have been instances when itmes have been in the cargo area and when the button is pressed, it will not release the latch. This causes someone to have to crawl over the back seat to retrieve the items from the cargo area. This also is causing my son to have to store items, that would normally be in the crgo area, on his back seat. I owned a 2015 terrain and had this same issue. The latch was replaced but still did not operate correctly.
The contact owns a 2017 GMC Terrain. The contact stated that whenever it would rainwater would leak into the vehicle underneath the dashboard on the passenger side of the vehicle causing water to leak onto the occupant's feet and onto the carpet. The contact had taken the vehicle to the dealer who resealed the area. The failure now occurs on the driver's side of the vehicle. The contact stated their appointment for the driver's side had not occurred as of yet. The manufacturer was not made aware of the issue. The approximate failure mileage was 48,000.
TL* THE CONTACT OWNS A 2017 GMC TERRAIN. THE CONTACT STATED THE DRIVER'S SIDE INSIDE DOOR HANDLE WAS FRACTURED. THE CONTACT WAS CONCERNED ABOUT CUTTING HER HAND ON THE DOOR HANDLE. THE CONTACT CALLED PENSKE CADILLAC OF SOUTH BAY (18600 HAWTHORNE BLVD, TORRANCE, CA 90504, (310) 697-1800) HOWEVER, THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS CONTACTED HOWEVER, NO FURTHER ASSISTANCE WAS PROVIDED. THE FAILURE MILEAGE WAS 39,000.
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