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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 2015 GMC Terrain owners. The owner comments describe problems respondents experienced with this vehicle.
AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
"Stopped working and/or warm air only"
Anonymous, DE (2015 GMC Terrain SLT 3.6-L V6)"Compressor failed"
Anonymous, NC (2015 GMC Terrain Denali 2.4-L 4 Cyl)Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
"Driveshaft chain snapped in 2 so it was unrivaled until engine replaced. Would start, drive a few highway miles then lose power and cutout. Had to put in neutral and restart several times. On return trip, drove 1 city block and engine quit, would not restart. Got towed home and told engine chain snapped in 2 and engine needed to be replaced."
Anonymous A., AZ (2015 GMC Terrain SLE 3.6-L V6)"Poor design of GMC 2013-2017 Terrain causing timeing chain replacement"
Anonymous A., MI (2015 GMC Terrain Denali 2.4-L 4 Cyl)Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
"Dealer couldn't get the part so Ihad my mechanic fix with after market part - dealer left me high snd dry"
Anonymous, MA (2015 GMC Terrain SLT 2.4-L 4 Cyl)"The automatic tire pressure monitor has issues on functionality. I have repaired it within two years of purchase and now it b=needs to be replaced. I find it too expensive to replace for only the convenience of not checking tire pressure manually."
Anonymous A., TX (2015 GMC Terrain SLT 2.4-L 4 Cyl)Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
"Paint chipping off around wheel wells, on hood"
Anonymous, ON (2015 GMC Terrain SLT 3.6-L V6)"Constant for the last 4 years. Rust on doors, at wheel wells, on tailgate, hood. Basically everywhere. Had a little body work done but returned next year worse than before."
Anonymous, ON (2015 GMC Terrain SLT 3.6-L V6)Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
"Replace transmission fluid"
Anonymous, NC (2015 GMC Terrain Denali 2.4-L 4 Cyl)Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
"Sensors on"
Anonymous, FL (2015 GMC Terrain Denali 3.6-L V6)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.
"Needed replaced. Lasted 9yrs."
Anonymous A., MI (2015 GMC Terrain Denali 2.4-L 4 Cyl)Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
"Gasket came apart"
Anonymous, KS (2015 GMC Terrain SLE 2.4-L 4 Cyl)Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
"Noticed oil leak after oil change. Problem was thought to be loose oil filter cap. Cap re-installed and tightend. Problem persists."
Anonymous, PA (2015 GMC Terrain SLE 2.4-L 4 Cyl)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.
"It was the timing chain, and it had to be redone. It cost a fortune. The oil was always changed perfectly and on time, and they still said there was sludge in the bottom of the engine."
Anonymous A., MI (2015 GMC Terrain SLE Unsure)Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
"Vehicle would stall at idle. A fuel injector was replaced."
Anonymous, OH (2015 GMC Terrain SLE 2.4-L 4 Cyl)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.
"Started hearing noise from front end. Noise level seemed to be speed related (higher speed = more noise). Garage found bad bearings, problem resolved."
Anonymous, PA (2015 GMC Terrain SLE 2.4-L 4 Cyl)Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water 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.
Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
"I'm not sure of it's my A/C compressor or the whole system. It hasn't worked since I bought the vehicle in 2023. The dealership it cam from and the warranty company (I have a total exclusionary coverage warranty) have refused to fix or replace it. When the air conditioner is on it just blows warm or hot air. It doesn't matter of it's on maximum cooling. I live with and care for my elderly mother, so it working properly is a necessity. My son tried to recharge the system but it wouldn't accept any refrigerant and kept blowing the adapter off. He's a mechanic, so he knows what he's doing. Two dealerships have told me they can't find what's wrong with it."
Anonymous A., NY (2015 GMC Terrain SLE 2.4-L 4 Cyl)