2018 Buick Enclave Engine cooling Problems
- Complaints
- 2about this part
- Share
- 3%of 66 total for the year
- Median mileage
- 86,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2018 Buick Enclave, 3% of the 66 complaints for this model year. Where a mileage was given, the median is 86,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2018 Buick Enclave. The contact stated that while driving at various speeds, the vehicle shut off and failed to restart. The vehicle was towed to the dealer, where the alternator was replaced 4 times before the dealer diagnosed that the failure was due to oil leaking onto the alternator and the battery. The contact stated that the alternator had been replaced 6 times in total. Additionally, the contact stated while pulling out of the parking lot and onto the road, the vehicle shut off. …”
NHTSA complaint #11740184, filed 2026-05, 72,000 miles“The contact owns a 2018 Buick Enclave. The contact stated that after picking up the vehicle from the dealer for a different failure, the exhaust pipe made an abnormally loud sound while driving. The check engine and other unknown warning lights were illuminated. The vehicle was taken back to the dealer, who determined that the catalytic converter had failed and informed the contact that the catalytic converter and the front exhaust pipe needed to be replaced. The vehicle was not repaired. …”
NHTSA complaint #11700353, filed 2025-11, 100,000 milesRelated service bulletins
- 10251890Mar 13, 2024This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank…
- 10250775Feb 22, 2024This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10250505Feb 7, 2024This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
- 10250503Feb 7, 2024This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
- 10250347Feb 2, 2024This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and…
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10249037Jan 11, 2024This informational bulletin advises the tech to validate if oil is leaking into the cooling system and to test and verify were to leak is coming from before replacing all the…
- 10247524Dec 13, 2023This service bulletin provides a repair procedure to correct a customer concern of Coolant and/or Oil Leak, Malfunction Indicator Lamp (MIL) Illuminatedâ.
- 10247192Dec 8, 2023This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
Engine cooling: other model years
Other parts of the 2018 Buick Enclave
21 complaintsTransmission and drivetrain
16 complaintsEngine
13 complaintsElectrical system
10 complaintsOther or unknown
8 complaintsForward collision avoidance
5 complaintsFuel system
5 complaintsAir bags
2 complaintsBack-over prevention (rear camera)
2 complaintsExterior lighting
2 complaintsSteering
2 complaintsBody and structure
2 complaints
← All problems reported for the 2018 Buick Enclave
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology