There are 2 owner-reported driver assist & adas complaints for the 2023 GMC Terrainin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
No warnings of any kind went off; I wasn’t even going 2 m.p.h. and hit a piece of wood that was right on the edge of the grass next to the road at the park. This is dangerous, especially at a park or other places where smaller children are present if I get that close to something and the none of the sensors go off letting me know there is something/someone that my vehicle could strike if not careful. I have not had it looked at yet, but plan to. No warnings of any kind have went off and it was functioning properly prior to this. There is severe damage to my vehicle
When I bought the vehicle new from dealership, they told me that side blind zone alert was not available at that time due to a semiconductor shortage, but that it would be available and could be retrofitted after they were available. I noticed that the 2022 retrofit had been authorized, and I need to know when I will be able to get this option retrofitted on my vehicle. It has horrible blind spots, and I have to literally turn around completely to see if there is anyone in the blind spots which is very dangerous because I’m taking my eyes off the vehicles in front of me to see the blind spots. This is dangerous in city driving where you are going 70mph in 4-6 lane traffic, almost bumper to bumper. If someone hits the brakes while I’m checking blind spots, then that could cause a wreck. I have all the other driver assistance, so the front braking will brake, but it is not a good idea for that to happen when someone is riding on your rear when the brakes slam on. I know I’m unique because I only see out of one eye at a time, but I believe this would still be a terrible issue for anyone trying to drive in traffic. I know the assistance packages don’t replace human interaction, but I do rely on those options to help me because of my eye condition. I told that to the dealer when I purchased this vehicle and they assured me that it was just a result of the shortages and it would be available for retrograde. I have called the dealer three or four times to check on this because at first they told me I was on the list and they would call me when the chip came in and they said it would be a few months. Well it’s been over a year and when I call now, they say it isn’t available and I asked them if I could just purchase the system myself instead of waiting for the recall, and they said I probably couldn’t afford it or it be worth it. I have looked on your site and others and I’ve seen nothing about it being in the works, so I want to report it so maybe you will look into it.
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