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2018 Terrain Reviews & Specs

Consumer Reviews for the GMC Terrain

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Never know when something may go wrong

Todd, 10/10/2018
2018 GMC Terrain SLT 4dr SUV AWD (1.6L 4cyl Turbodiesel 6A)
We purchased our 2018 SLT diesel Terran in September on 2017. It was a very early build and we had just sold back our 2012 VW jetta diesel due to VW fraud. It started out good but after a couple of months, things started going south. First it was the radio would just go dead and nothing could be done to get it back on until it wanted to. Of course, this would never happen at the … dealership so nothing has been done to fix it to date. Then about 3000 miles I got a warning that the DEF system was low. After filling DEF, I kept getting different DEF warnings and vehicle shut down warnings. It stooped this for 2 days and on my way to Yuma Az, the warnings all came back, the vehicle went into limp mode and we barely made the last 60 miles to dealership. They found the DEF wire harness was to close to drive shaft and it wore thru the harness and shorted out the system. Back on the road that day. Move forward to August of 2018 and problems again. My wife called and said it quit and I had to leave work to go get her. It started up when i got there and she drove it about 600 yards to truck stop. It was smoking heavily and had no power. I contacted Onstar roadside service and it was towed to nearest dealership. It was diagnosed as a injector failure and then plugged the DOC. We were told the DOC was on BOP and no date when it may show up. After 28 days we were finally notified the vehicle was repaired. They blamed my K&N filter for the issues and removed it. K&N says there is no way and is helping me with this matter. The radio still quits at times and my wife is almost scared to take it any further than work and grocery store. I thought GMC would put out a better product and not have these type of issues. I tried to make a deal trading it in at the dealership we purchased it from but I would have to take a 38% loss in less than a year. I seems they know they cant sell it again.I will go back to foreign vehicles again as I have had much better luck 2/21/2019 Still battling with this piece of J*&K . Writing another review. After 28 days in the shop last fall it has spent 23 more days in the shop and counting. It is in the shop now for 18 days and GMC says no known fix as of this date. Got an engine light and code showing emission system problems. We also smelled an exhaust leak in the cabin. With no ETA on getting it repaired, GMC still refuses to purchase this vehicle back from me. If anyone knows how to get GMC to buy back vehicles please let me know. If it ever gets out of the shop it will be put up for sale.
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