2015 GMC Terrain Engine cooling Problems
- Complaints
- 4about this part
- Share
- 1%of 299 total for the year
- Median mileage
- 127,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine cooling of the 2015 GMC Terrain, 1% of the 299 complaints for this model year. Where a mileage was given, the median is 127,000 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 2015 GMC Terrain. The contact stated that while driving approximately 40 MPH, there was an abnormal rattling sound coming from the engine compartment. The vehicle was taken to the residence. The contact stated that when the vehicle was started the following day, the rattling sound from the engine compartment returned. The vehicle was taken to a dealer on several occasions, and it was diagnosed and determined that the engine was low on oil and was consuming 2 quarts of engine oil every 2-3 weeks. The contact stated that the oil level was topped off. …”
NHTSA complaint #11731173, filed 2026-04, 94,000 miles“The contact owns a 2015 GMC Terrain. The contact stated that while at a complete stop, the vehicle jerked and shut off. The check engine warning light was illuminated. The contact was able to restart the vehicle and continue driving. The contact stated that on several occasions, while the vehicle was jerking at a complete stop, the contact shifted to park(P) to prevent the vehicle from stalling. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the fuel pump was leaking fuel into the oil gasket. …”
NHTSA complaint #11614417, filed 2024-09, 127,000 miles“The contact owns a 2015 GMC Terrain. The contact stated while driving 70 MPH with cruise control activated, the RPM suddenly increased to redline, after which the vehicle lost motive power. The contact was able to coast to the shoulder of the roadway, where the vehicle failed to restart. No warning lights were illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the positive crankcase ventilation (PCV) valve, which then caused a failure with the front crank seal, resulting in damage to the engine. The contact was informed that the engine needed to be replaced. …”
NHTSA complaint #11654723, filed 2025-04, 148,000 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.
- 10246483Nov 29, 2023This service bulletin provides diagnostic aid information/procedures to perform inspections to determine if the engine needs to be replaced as opposed to just internal parts for…
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 1 | 2% |
| 2022 | 2 | 3% |
| 2021 | 2 | 6% |
| 2020 | 3 | 2% |
| 2018 | 1 | 0% |
| 2017 | 2 | 1% |
| 2015 | 4 | 1% |
| 2014 | 7 | 2% |
| 2013 | 11 | 3% |
| 2012 | 5 | 1% |
| 2011 | 22 | 6% |
| 2010 | 10 | 3% |
Other parts of the 2015 GMC Terrain
120 complaintsEngine
81 complaintsElectrical system
31 complaintsExterior lighting
24 complaintsOther or unknown
21 complaintsTransmission and drivetrain
21 complaintsFuel system
18 complaintsAir bags
17 complaintsBody and structure
14 complaintsBrakes
9 complaintsElectronic stability control
8 complaintsVehicle speed control
3 complaints
← All problems reported for the 2015 GMC Terrain
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