Table 1 shows one common wheel related problems of the 2012 GMC Terrain.
| Problem Category | Number of Problems |
|---|---|
| Wheel problems |
GMC consumer relations subject: structural undercarriage safety defect – 2012 GMC Terrain sle vehicle information: year/make/model: 2012 GMC Terrain sle VIN: [xxx] mileage at purchase: 148,305 date of purchase: [xxx] location: rochester, new york I am filing a complaint regarding a severe undercarriage safety defect in my 2012 GMC Terrain sle. The rear undercarriage of this vehicle shows heavy structural corrosion on suspension brackets and mounts. The condition produces clanging noises during normal driving, and an independent licensed mechanic has refused to work on the vehicle because the suspension integrity is unsafe. When I returned the vehicle to the dealer, I observed additional brackets being attached under the rear subframe area, suggesting reinforcement of compromised structural points. This confirms that the corrosion directly affects suspension geometry, alignment, and stability. This corrosion is not cosmetic. It is advanced structural deterioration affecting the mounting points for trailing arms and lateral links. These components are critical to safe turning, stability, and control. The corrosion compromises the ability of the suspension to keep the wheels aligned, creating serious risks of loss of control or wheel separation. What makes this more alarming is that the vehicle passed a new york state safety inspection on 07/13/2025, yet within days a mechanic refused to perform unrelated service because of the undercarriage condition. This raises questions not only about inspection validity, but also about the underlying durability and corrosion. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
I am having trouble with these things now. The powertrain especially I have not had accident yet but it keeps going dead on me in the middle of driving down road. Causing me to have to put in neutral and restart. At this time the steering goes out. This needs to be repaired before an accident does happen. The drivers seat does not move forward or backwards. The tire pressure warning does not warn until it is at 20 psi.
We received a notice in the mail regarding our vehicle with our VIN #. And it mentioned our particular size engine had a recall for potential emissions part condition of degraded catalytic converter and/or oxygen sensors caused by excessive engine oil consumption affecting some vehicle from our year, make, and model. We were surprised to receive this notice because we always park in reverse and we had noticed how it was turning the curb side black coming from the tail pipe. We did receive one other notice before and took it to the dealership to have it maintenance but my honest opinion I do believe they did anything to our vehicle because it was running the same and also took it to midas after taking it to the dealership because it ran the same. Anyhow I hope upon receiving this other notice we can actually maybe get reimbursed and actually get it fixed finally.
2012 GMC Terrain makes a clicking noise when pressing acceleration pedal. I habe changed oil, plugs and belts but still can't find source of tapping. Also my tires are new, less then a year and constantly show low pressure. I have checked for nails but none found.
I was driving up a slushy hill and had to stop midway up the hill. Once I proceeded up the hill my car just spun tire,so I put the car in reverse and backed back down the hill. I then drove to work and parked my car. When I started my car to leave work the service awd alert came on. This is the second time since Dec. 2013 that the awd has gone out in my vehicle. I live in an area where snow is prevalent and purposely bought an awd vehicle for peace of mind and now for the second time it is out!.