Gmc Terrain Years to AvoidThe weakest years — and the one you should buy instead
After reviewing every Gmc Terrain we've analyzed (16 years), these are the 4 weakest. Each one has either an absolute low reliability score, chronic repair issues, or unusually high ownership costs relative to other Terrain years.
Proceed with caution
2010 Gmc Terrain
While the 2010 GMC Terrain offers a comfortable ride and spacious interior, its reliability is significantly hampered by the notorious 2.4L Ecotec engine, prone to severe oil consumption and timing chain failures. Proceeding with caution is paramount, especially if considering a 4-cylinder model, as these issues can lead to costly and premature engine overhauls.
Why this year scores low
The 2.4L LUK/LAF direct-injection engine is infamous for excessive oil consumption due to faulty piston rings and PCV valve issues. This leads to premature timing chain stretch/failure, causing misfires, reduced power, and eventually total engine failure if neglected. GM issued a special coverage adjustment (12313) for these issues, but many vehicles are now out of coverage.
While generally robust with proper maintenance, the 6T45/6T70 automatic transmissions can suffer from hard shifting, delayed engagement, and solenoid failures (particularly the 3-5-R wave plate for some model years/builds, though less common in 2010). Torque converter shudder and sensor issues are also reported.
Owners frequently report issues with the HVAC blower motor and resistor, power window switches, and occasional glitches with the infotainment system. Less common but frustrating are issues with door lock actuators and intermittent sensor failures that can trigger warning lights.
Proceed with caution
2011 Gmc Terrain
The 2011 GMC Terrain is a comfortable and stylish compact SUV, but its reliability is significantly hampered by widespread issues with the 2.4L Ecotec engine. If you're considering this vehicle, a meticulous pre-purchase inspection and a preference for the less common 3.0L V6 engine are absolutely critical to avoid potentially catastrophic repair costs.
Why this year scores low
The 2.4L 4-cylinder engine suffers from excessive oil consumption due to faulty piston rings and PCV issues. This leads to oil starvation, accelerated wear, and premature timing chain stretch, often resulting in engine damage or failure.
Owners frequently report hard shifts, delayed engagement, and a shuddering sensation, often linked to the torque converter clutch or valve body issues. While not as universal as engine problems, it's a common and costly repair.
Common complaints include failing HVAC blower motors, faulty power window switches, and occasional glitches with the infotainment system. While often minor, these issues can be persistent and frustrating.
Proceed with caution
2012 Gmc Terrain
The 2012 GMC Terrain can be a comfortable and spacious used SUV, but its reliability is significantly hampered by serious engine issues, primarily with the 2.4L Ecotec. While the V6 offers a more robust experience, careful pre-purchase inspection and a vigilant maintenance schedule are absolutely critical to avoid major financial headaches.
Why this year scores low
The 2.4L direct-injection engine (LAF/LEAF) is prone to excessive oil consumption due to piston ring design flaws, leading to oil starvation, carbon buildup, and premature timing chain stretch or failure. This often culminates in costly engine rebuilds or replacements.
Frequently fails prematurely due to contamination from the excessive oil burning inherent in the 2.4L Ecotec engine. This leads to reduced engine performance, warning lights, and expensive replacement.
Some owners report issues with the electric power steering system or pump, leading to a loss of power assist, often requiring replacement of the entire steering rack or pump assembly.
Proceed with caution
2013 Gmc Terrain
The 2013 GMC Terrain presents a compelling package of space and comfort, but its widespread 2.4L Ecotec engine issues, particularly excessive oil consumption and timing chain problems, make it a risky proposition. While the V6 offers more peace of mind, careful pre-purchase inspection and a robust maintenance plan are absolutely critical for any 2.4L variant to avoid significant repair costs.
Why this year scores low
The 2.4L direct-injection four-cylinder engine is notorious for excessive oil consumption due to piston ring design flaws, often leading to premature timing chain stretch, valve damage, and ultimately engine failure if not addressed. This is a well-documented issue with numerous TSBs and even extended warranties in some cases (though likely expired by now).
Related to the 2.4L engine, the high-pressure fuel pump (HPFP) can fail, often accompanied by a distinct ticking noise and check engine light. Failures can lead to engine hesitation, misfires, and loss of power. The camshaft lobe that drives the pump can also wear prematurely.
Actuator failures within the heating and air conditioning system are common, leading to clicking noises behind the dash and an inability to control air temperature or direction properly. While not a safety issue, it's a persistent annoyance for owners.