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The 2020 Terrain has about average reliability compared to other cars from the same model year.
The Reliability score is based on our latest subscriber survey of 2020 GMC Terrain owners. The owner comments describe problems respondents experienced with this vehicle.
Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
"Rear passenger window control not working"
Anonymous, WI (2020 GMC Terrain SLE 1.5-L 4 Cyl turbo)""Replaced radio, failed to pick up GPS signal, software updates did not fix problems- resolved fall of 2024""
Anonymous, (2020 GMC Terrain SLT 2.0-L 4 Cyl turbo)Transmission rebuild or replacement, torque converter, premature clutch replacement.
"Had transmission flushed and cleaned. It would hesitate when you pressed the gas"
Anonymous, OH (2020 GMC Terrain Unsure 2.0-L 4 Cyl turbo)Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
"Fuel was contaminating the engine oil. All fuel injectors were replaced."
Anonymous, WI (2020 GMC Terrain Denali Unsure)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.
Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
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.
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
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.
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.
Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
"Had to replace radio to fix problems"
Anonymous, (2020 GMC Terrain SLT 2.0-L 4 Cyl turbo)