Three problems related to loud engine noise 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.
Tl the contact owns a 2011 GMC Terrain. While driving the vehicle, a loud abnormal noise was heard. The contact took the vehicle to dick norris Buick GMC (30777 us hwy 19, north palm harbor, FL, (727) 787-8663) where it was diagnosed that the engine oil was consumed prematurely and the engine piston ring failed. The manufacturer was contacted and provided case number: 9-516-964-0426. The manufacturer stated that the engine replacement warranty expired on January 20, 2019. The manufacturer also stated that the warranty did not cover vehicles with over 120,000 miles. The vehicle was not repaired. The failure mileage was 68,500.
While I was driving 35-45 miles per hour the truck turned off on its own so I parked truck on the side of the road. I waited a few minutes and tried to turn vehicle on again, it turned on again and I continued driving 20-30 per hour. Then after being stopped at a red light when it turned green I stepped on the gas and there was a loud sound plus we felt like it had jumped.
About a month after purchasing this brand new vehicle, there were several times that after starting the car & putting it into gear, it stalled. There has also been times that after driving it for a while & coming to a stop sign, then getting ready to pull out into traffic, it either stalls or hesitates. There were a few close calls where there could have been a major accident. Taking this to the dealer did nothing. They said they have heard of this before, but unless it did it at their dealership, they couldn't fix the problem. Another issue I have had is that many times the transmission doesn't shift properly & it revs up more than it should before actually shifting & when it does, there is a major clunk. I have owned many cars in my lifetime, this car always on startup, makes a terrible noise at first which to me sounds like it's not getting any oil or that the bearings have a problem. That noise goes away after a few seconds. Another issue I have, as do all other Terrain owners, is that the sticker on the window from gm when buying this car, stated that this car would get 23 mpg city, & 32 mpg highway. Most all my miles are highway miles, & the most I ever get is 22 mpg. This was the main reason for buying this car in the first place. I think gm should be held accountable for this grossly mis-representation of what I would be getting for gas mileage. I am not that wealthy where I can just go out & buy a new car every year, but am fearful that with the car stalling out whenever it feels like, that I may have an accident. I am also not thrilled with the noise it make when I start it, & wonder how long before it doesn't run. I now have 36,000 miles on it with these issues, my last vehicle that I traded in for this had 250,000 trouble free miles. Gm needs to buy this back, or lifetime warranty on motor along with free gas to make up for the 10 mpg I'm not getting.