Four problems related to carrier/rack have been reported for the 2011 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 GMC Terrain based on all problems reported for the 2011 Terrain.
On 08/05/2020 I was sold this vehicle with a cracked manifold. Upon replacement of the manifold it was discovered that two manifold bolts were seared on the engine block side. After consulting my mechanic and another, I was advised that 1) to repair the engine has to be lifted as the space between the firewall and the engine is too small to make repairs without lifting the engine ( manufacture defect) . Further, it was advised to me that completely sealing the manifold could lead to a fire in the catalytic converter because � these engines run hot�. As I expressed that this vehicles �antifreeze� level is not stable as I have experienced with other vehicles. In other words this vehicle burns up antifreeze quicker than I've seen occur in other vehicles. After researching the topic it was discovered by consumer reports that these vehicles have major defective engines with repairs to manifold being notorious. And to have to have the engine lifted each time is unreasonably costly. And I no longer feel safe driving this vehicle if a defective engine runs hot and there's a risk of fire. This is exacerbated by the fact of the tiny space between the engine and firewall within the vehicle.
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.
I smelled fumes. The check engine light did not go on. I brought to my mechanic who said it had a cracked exhaust manifold. Co is leaking into my car. I will pay $1000 to have this fixed. No accidents. Just a faint smell of gas. I have 2 kids and routinely bring other peoples' kids into my car. Unacceptable GMC.
Exhaust manifold cracked between cylinders 2 and 3 upstream oxygen sensor from hot exhaust gases from the leak passing on the wires and heater element within the oxygen sensor and exhaust manifold top heat shield. Carbon monoxide leaking through floor board.