GMC Terrain owners have reported 3 problems related to timing tensioner (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Terrain based on all problems reported for the Terrain.
Motor started knocking louder and louder at 85,000 miles. Brought vehicle to a gm dealer where they replaced; timing chain, balance chain, tensioner, and valves. Gm only claims responsibility for the timing chain, though that part breaking caused far more damage to the motor. Gm has knowingly put and kept out their bad 4-cylinder ecotech motors from 2010-2013. Their class action lawsuit stipulations disqualify most vehicles that are affected. My vehicle is currently broken down due to the same issue, I can't rely on the motor to get me where I'm going without dying at a stop sign or running completely out of oil 2,000 miles after having an oil change. While breaking on a highway my motor will rev up, as if it's trying to accelerate while I'm trying to slow down.
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all problems of the 2011 GMC Terrain
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The car is a 2012 GMC Terrain 2. 4 liter eco tech- I found where GMC put this issue as a recall in 2015 for 7 years or 120,000 miles to be fixed for free- I bought my car from frank's GMC/chevorlet in kosciusko, ms in November 2017 with 111,000 miles on it- the issue was not mentioned and I have the carfax on the vehicle which mention all the service dates and none of which are related to this recall- also I never recieved any information by mail about this recall and had to do some digging to find out that it's not just me with the problem but so many others! I went to frank's GMC where I purchased the car and they are supposed to give me a call back about this problem but the guy I talked to had no idea what I was even talking about yet! 3 days late they wont even answer my calls and when I went into the office said they would have to get a number to call me back again which has not happened yet! we have priced a new motor and to get it put in- price of motor- $3,200 price to put it in- $1,000 warranty- 3 year with unlimited mileage- or the parts that have to be changed out are in link below if the motor wasnt replaced: https://gm. Oemdtc. . Read more...
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all problems of the 2012 GMC Terrain
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Timing chain jumping off of sprockets and eating away at the chain guides and tensioners.