Exhaust
Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
What Owners Say
"thermostat went out."
Anonymous, IL (2021 GMC Acadia SLT 3.6-L V6)Ad-free. Influence-free. Powered by consumers.
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The 2021 Acadia is less reliable than other cars from the same model year.
The Reliability score is based on our latest subscriber survey of 2021 GMC Acadia owners. The owner comments describe problems respondents experienced with this vehicle.
Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
"thermostat went out."
Anonymous, IL (2021 GMC Acadia SLT 3.6-L V6)Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
""engine ran cold and wouldn't warm up, repaired.""
Anonymous, TX (2021 GMC Acadia Denali 3.6-L V6)"The dash lit up like a pinball machine. It stated the power assist steering was not available, the GM dealership said 3 weeks to get it in. They finally agreed to take it in and said it was the thermostat? $1250.00 charge to fix. I don't know if it's the Acadia Denali or the Dealership, the dash now goes black randomly- acts up as stated."
Anonymous, WV (2021 GMC Acadia Denali 3.6-L V6)AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
"Air conditioner was not cold"
Anonymous, CA (2021 GMC Acadia AT4 Unsure)Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
""In traffic, the motor died and would not start. Finally hand push car onto side street. Had to wait 5 hours for AAA to load the car and take to dealer. Dealer was closed, left in dealer lot. Had to wait 2 days for dealer to respond to report I filled out when the car was left at dealer. Several days later, the dealer reported that the battery was out of warranty and had to be replaced. I disagreed but had to OK, in order to fix the problem. After I paid for the battery + installation, (over $200.00) the dealer then said there was another problem with fuel system, a part had failed. That part was out of warranty. I gave OK to replace; they had to order the part. Finally after almost two weeks, I picked up the car and paid (roughly), another $400.00. I will never take this vehicle back to the dealer, terrible service as to time involved, rip-off for new battery (not needed) and excessive charge for parts & labor for new fuel system part.""
Anonymous, WA (2021 GMC Acadia Denali 3.6-L V6)Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
"water leaked in shark fin antenna and shorted it out. expensive to fix."
Anonymous, NY (2021 GMC Acadia SLT 3.6-L V6)Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
"The screen has randomly froze or went black."
Anonymous, WV (2021 GMC Acadia Denali 3.6-L V6)Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
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.
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.
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
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.
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.
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"Radiator was replaced do to leak"
Anonymous, MN (2021 GMC Acadia Denali 3.6-L V6)