Blind Spot Detection Problems of GMC Terrain

The engine light came on while driving, saying “engine power reduced”. It barely accelerates, rpms go over 5, it chugs when driving. Taken to an independent service center.

See all problems of the 2021 GMC Terrain 🔎.

It starts to “warn” you by the seat doing whatever it does and the dash lights up collision flashing and slams on the brakes when nothing is even around.

See all problems of the 2018 GMC Terrain 🔎.

Vehicle every other morning shows issue with blind spot assist. It keeps popping an error message and it has happened since I purchased it new. Took it multiple times to dealership and they cannot recreate issue. So it's been an issue since I bought it now.

See all problems of the 2024 GMC Terrain 🔎.

Top of roof pops when you shut car door, leaking either transmission fluid or oil, left turn signal doesn't stay engaged when turning, side mirror warning lights randomly go off when no car is around. Car is not shifting correctly when driving.

See all problems of the 2025 GMC Terrain 🔎.

Wipers stop working in snow storm.

See all problems of the 2014 GMC Terrain 🔎.

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.

See all problems of the 2023 GMC Terrain 🔎.

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.

Please let me.

The blind spot detection sensors have failed and the rest of the detection systems using the bad sensors are also non functional. An alert is shown in the info center every time the car starts. I have read that the issue is due to poor positioning of the sensors allowing for tire spray to directly hit the non water resistant sensors and their connectors. The replacement parts and labor are ridiculously expensive and the ability for an owner to complete this task is nearly impossible. A simple splash guard behind the tire or even waterproofing the sensor and it’s entirety to avoid water penetrating and causing the very expensive sensor and all detection systems connected to it to fail.

See all problems of the 2015 GMC Terrain 🔎.

The engine - my engine blew because oil evaporated out of the #1 cyclinder, which drained the oil. No warning lights went on and the vehicle stalled in the middle of rush hour traffic. The dealership told me it was because of a factory defect, but no recall on that part of the vehicle. This could have been much worse if the vehicles behind me were going faster than they were and not able to stop before rear ending me. Because this was a factory defect it should have been recalled and I should have been notified of this problem when I bought the vehicle.

See all problems of the 2016 GMC Terrain 🔎.

I was backing out of a parking spot when I came in contact with a vehicle going east bound in the parking lot the contact was on the rear right side of my vehicle before I could do anything my vehicle sped up and proceeded to go forward jump a curb I had my foot on the brakes when I realized I wasn’t stopping and heading for a garage I turned right trying to avoid the garage but still hit the corner of garage causing damage then vehicle stopped and shut down. The vehicle is still being repaired the mechanic said there was damage to a box and cable going to transmission but couldn’t say if it was the fault reported to police end insurance but haven’t gotten any response reported it to general motors but haven’t gotten a response.

None of these features have ever worked.

See all problems of the 2020 GMC Terrain 🔎.

The contact owns a 2022 GMC Terrain. The contact stated that the vehicle's lane departure for the left side failed to accurately signal the clearance to steer the vehicle to the left. The contact had not taken the vehicle to the dealer as of yet. The vehicle had not been diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 500.

See all problems of the 2022 GMC Terrain 🔎.

The emergency flasher button sticks down it sticks being pushed in along with the eco button and I feel the drive shaft should be more durable than 155,000 mi or 11 years.

See all problems of the 2010 GMC Terrain 🔎.

The engine is consuming oil at an excessive rate.

See all problems of the 2013 GMC Terrain 🔎.

"service side detection system" warning upon startup and sporadically when driving at normal speeds. The blind spot monitor lights in the side mirrors do not function anymore. Upon starting the vehicle, both sides used to illuminate while running thru systems check. Now only the driver's side lights up. To confirm, the blind spot monitoring does not work for either side of the vehicle now. The sensor is underneath the rear bumper cover, exposed to the elements. There are several forums mentioning this on the GMC Terrain denali model along with Cadillac and Chevrolet models that have the sensor in the same physical location of the car. The sensor is exposed to rain, snow, dirt, dust, mud. I have checked recalls on this but it doesn't appear to have any out there despite forum complaints. There seems to have been "service bulletins" sent out for Cadillac and Chevrolet models due to customers complaining about this same issue. Those have been replaced at no cost to the consumer from what I understand. After doing some research, typical cost for this piece direct from online sellers is $250+. To have the dealer replace, it's looking at a cost upwards of $750+. The number of Terrain denali (the only Terrain trim with the side blind zone alert) are relatively low compared with the quantity of the Cadillac and Chevrolet models with this issue. I'm wondering if this is possibly why there were no "service bulletins" on the Terrain. The Terrain has a horrible blind spot and I utilized this feature all the time when it was working properly. I feel like safety is compromised for myself and my family with this now not working. I appreciate any and all assistance.

I'm a single mother and my car have been nothing but trouble when I'm driving my windshield wipers stop working three times I had to fix them my tires always need air so every week I need more air and the tires in the back goes out the fastest why is this happening its not good for my family please help.