One problem related to radiator has been reported for the 2014 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 GMC Terrain based on all problems reported for the 2014 Terrain.
Around 90,000 miles the engine began burning oil. I had to add oil every 2,000 miles. At 101,000 miles radiator failed. At 123,000 miles the engine completely failed. The mechanics at gm dealership could not explain it. They said it appeared that the engine was burning oil. I had to spend $7,000 to replace engine and additional parts that were damaged due to the engine failure. I have seen many reports about the engines for this model and year burning oil with no action or recall from gm. Once more owners hit 100,000 miles, I believe that there will be more reports of this engine issue. Hopefully gm will then respond and issue a recall.