Driving a 2017 GMC Terrain offers a blend of efficiency, capability, and modern comfort that appeals to a wide range of buyers. This compact SUV, positioned as a slightly smaller sibling to the Acadia, provides nimble handling and a refined interior that competes well in its class. However, like any complex machine manufactured during its specific production years, the Terrain is not without its specific set of issues that owners have encountered over the last several years.
Understanding the common 2017 GMC Terrain problems is essential for current and prospective owners to ensure long-term reliability and avoid unexpected repair costs. While General Motors has a solid reputation for durability, specific model years can exhibit recurring mechanical or electrical faults. This guide delves into the most frequently reported issues with the 2017 model, providing insights into symptoms, potential causes, and recommended actions.
Electrical System and Infotainment Concerns
The 2017 model year represents a significant shift toward digital interfaces in the automotive world, and the Terrain is no exception. Owners have reported a high incidence of infotainment system glitches, including unresponsive touchscreens, systems that fail to boot up correctly, and intermittent failure of various electronic modules. These issues can often be traced to software bugs or faulty wiring harness connectors that may degrade over time due to heat or vibration.
Beyond the central navigation unit, electrical gremlins can manifest in more subtle but equally frustrating ways. This includes the failure of power window regulators, where the window fails to roll up or down, or complete malfunctions of the power seat controls. Another relatively common complaint involves the automatic climate control system acting erratically, blowing air when it shouldn't or failing to maintain the set temperature, which points to issues with the HVAC module or its associated sensors.
Engine and Transmission Performance Issues
Under the hood, the 2017 Terrain is primarily powered by a 1.5-liter turbocharged four-cylinder engine, which delivers a good balance of power and fuel economy. However, this specific powertrain has been associated with a critical issue known as oil dilution. In cold weather conditions, especially with short trips, unburned fuel can leak past the piston rings and mix with the engine oil, diluting it and significantly reducing its lubricating properties. This can lead to premature wear on engine bearings and, in severe cases, catastrophic engine failure if left unchecked.
Owners of the available 2.0-liter turbocharged engine have also reported instances of rough idling and hesitation during acceleration. This often points to problems with the direct injection system or the turbocharger wastegate malfunctioning. The automatic transmission, paired with these engines, has also been the subject of complaints, with some drivers experiencing harsh shifting into first gear or unexpected slipping between gears, which may indicate software calibration issues or failing internal clutches.
Brake, Suspension, and Steering Complaints
The driving dynamics of the 2017 Terrain are generally praised, but specific components within the steering and suspension systems have shown vulnerability. A notable issue involves the front suspension lower control arm bushing. Over time and through normal use, these rubber bushings can wear out or tear, leading to a distinct clunking noise over bumps and a vague feeling in the steering wheel. Ignoring this can result in uneven tire wear and a less stable ride.
Brake system problems have also been documented, with some owners experiencing a pulsating brake pedal, particularly when applying the brakes at higher speeds or after the vehicle has been driven hard. This pulsation is often a sign of warped brake rotors, which can occur due to excessive heat or improper installation. While not unique to the Terrain, it is a critical safety component that requires immediate attention to maintain vehicle control and prevent more expensive repairs down the line.
