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We expect the 2025 Terrain to have about average reliability when compared to other new cars. This prediction is based on GMC's brand history and the previous generation of the Terrain.
The Reliability score is based on our latest subscriber survey of 2012 GMC Terrain owners. The owner comments describe problems respondents experienced with this vehicle.
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
"The seals on all the doors and back hatch are falling off and water leaks in whenever it rains."
Anonymous, NY (2012 GMC Terrain SLE 2.4-L 4 Cyl)"The rattle is constant in the rear part of the vehicle and started over a year ago. The dealer had the vehicle for 3 weeks , but couldnt find the rattle."
Anonymous, CA (2012 GMC Terrain SLT 3.0-L V6)Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
"caused by cam sensor problem that was cured when cam sensor replaced."
Anonymous A., FL (2012 GMC Terrain SLE 2.4-L 4 Cyl)"It was hard to figure out what sensor was causing the difficulty. It was a quick fix when problem found."
Anonymous A., AK (2012 GMC Terrain SLT 2.4-L 4 Cyl)Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
"Excessive oil consumption. 1 litre per 1000 km. Has been tested 3 times by three different GM dealers as this is a known defect with Terrains. Was told each and every time, my consumption was normal."
Anonymous A., ON (2012 GMC Terrain SLE 2.4-L 4 Cyl)"speed increase on hills timing issue"
Anonymous, ON (2012 GMC Terrain SLT 3.0-L V6)Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
"Major and massive Rusting. Rocker panels, wheel wells completely rusted out. Have never ever seen a vehicle ever rusted so bad."
Anonymous A., ON (2012 GMC Terrain SLE 2.4-L 4 Cyl)Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
"Tire pressure sensor needed to be replaced."
Anonymous A., WA (2012 GMC Terrain SLT 2.4-L 4 Cyl)Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.
Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, USB ports, alarm or security system, remote engine start, heated or cooled seats, heated steering wheel, headlights, automatic headlights, automatic wipers, wireless charging pad.
Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
Alternator, starter, hybrid battery replacement, hybrid battery related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, spark plugs and wires failure, auto stop/start.
Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (power or manual), seat belts, sunroof, convertible top, glass defect.
GMC Terrain
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"leaks when raining by roof rack into bottom of back passenger floor"
Anonymous, ON (2012 GMC Terrain SLT 3.0-L V6)