Engine Minor
Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
Reliability indicates how models have performed in the past, providing the basis for predicting how the vehicles will hold up in the year ahead. These charts provide the most comprehensive reliability information available to consumers. Based on information received from our latest subscriber survey, our reliability history charts give you a rundown on how used vehicles are holding up in 17 potential trouble spots, ranging from the engine, transmission, and brakes to power equipment and the electrical system.
The Reliability score is based on our latest subscriber survey of 2015 Buick LaCrosse owners. The owner comments describe problems respondents experienced with this vehicle.
Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
"Transmission rebuild at 75000 miles - then started acting up again this year. Torque issues twice in the last 18 months"
Anonymous, MN (2015 Buick LaCrosse None 3.6-L V6)Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
"Transmission rebuild at 75000 - torques out twice the last year other issues otherwise love the car"
Anonymous, MN (2015 Buick LaCrosse None 3.6-L V6)Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
"gm no longer supports the on air updates of the car, no remote start or entry from app, etc."
Anonymous, KS (2015 Buick LaCrosse None 3.6-L V6)Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
"I was driving in a mountainous area in August 2023. When I reached the top of the last mountain just before reaching Flagstaff AZ My car suddenly stopped accelerating and I was forced to call AAA. My car was towed to the nearest shop. This occurred the Wednesday before Labor Day. The shop was unable to get the part until after the holiday. I was forced to rent a car for the next week as I was stranded 2 or 3 hours away from home. my car was not fixed until the following Tuesday and cost $1200"
Anonymous A., (2015 Buick LaCrosse None 3.6-L V6)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.
"The chime keep going off even though the seat belts are hooked or nobody is seating on the passenger side. I paid $475.00 to have it fixed and it didn't work. This problem has been going on since I bought the car and 1st dealership always stated there was nothing wrong with the system"
Anonymous, TX (2015 Buick LaCrosse None 3.6-L V6)AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
"Apparently a known issue among Buicks. The AC controls for both my 2015 Lacrosse and spouse's 2018 Enclave regularly do nothing (e.g. hot exhaust when AC is on until you decrease the temp controls repeatedly to the lowest possible temp, and even then often requires starting and stopping AC). At times it can take ten (10) minutes in a hot car to get the AC to activate."
Anonymous A., VA (2015 Buick LaCrosse None 3.6-L V6)Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
"Edge of trunk lid chipping and rusting at top directly below rear window."
Anonymous, IL (2015 Buick LaCrosse None 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.
"Sitting in vehicle with engine off, inside valet lights turn on and off with nothing else engaged. Running lights will turn on at odd times also."
Anonymous, IL (2015 Buick LaCrosse None 3.6-L V6)Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
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.
Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water 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.
"Oil is seeping from the engine bottom. Because of a tight engine compartment, cost to fix = $4,500"
Anonymous, NC (2015 Buick LaCrosse None 3.6-L V6)