2018 GMC Terrain Fuel system Problems
- Complaints
- 17about this part
- Share
- 8%of 226 total for the year
- Median mileage
- 26,500miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 17 complaints about the fuel system of the 2018 GMC Terrain, 8% of the 226 complaints for this model year. Where a mileage was given, the median is 26,500 miles. 2 of these say a crash was involved, according to the filers. 1 recall campaign on record is filed under a similar system.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Screen went black and warning chimes and seat vibration did not go off when backing up. Had to file a claim with insurance to fix my dented bumper. I also experience issues with the audio buttons on the steering wheel. I am not able to change the song in I am on apple play and there is always a delay when changing radio stations.”
NHTSA complaint #11270218, filed 2019-10, 27,000 miles“My vehicle has been making a noise every since the day of purchase. It started as a vague sound and has since gotten worse. The noise is coming from the rear exhaust. At certain speeds of travel the noise gets worse. I have done a visibility check of the rear exhaust pipe and noticed the assembled exhaust where it was welded is loose and shaking. I'm not for sure if this is where the noise is coming from but it could use some investigation. I purchased my vehicle with no mileage about 5 months ago from hennessy Gmc in morrow georgia.”
NHTSA complaint #11176213, filed 2019-02, 21 miles“Leaking diesel fuel line while running, parked and in gear. Second diesel Terrain fleet vehicle to leak fuel; other colleague had the same issue recently and was asked if someone cut the fuel line. Now, mine is leaking.”
NHTSA complaint #11152349, filed 2018-11, 15,100 miles“Hello. As I come to a complete stop the car will go into auto-stop. After releasing the brake pedal the car will jerk forward . As I press the gas pedal the car Jerks and shakes . The rpm jumps way up and the mph say low.. there's been times I try to accelerate and the car with jerk and put itself into park.. in the middle of traffic.. heart pounding to say the lease. I also notice theres alot of black liquid dripping for the front right side under the front bumper. There were no problems with the car or lamp indicating there were before this. …”
NHTSA complaint #11607419, filed 2024-08“My check engine light comes on intermittently, since March 2024, after having Cabin & Engine air filters replaced. Each time, I’m told it is code P0171. This has happened too many times for my comfort. Usually, it happens around the time my gas gets below 1/2 tank or after I fill up my gas tank. Originally, I was told by the mechanic that it could be one of four things, of which I’ve now had some of things done. InIn Aug. 2024, the check engine light came in. Code was P0171. Mechanic replaced the Brake vacuum pump. Once incident, almost a month later, on 9/24/24, was very scary. …”
NHTSA complaint #11644047, filed 2025-02Related recalls
- 18V358000May 31, 2018General Motors LLC (GM) is recalling certain 2015-2018 GMC Canyon, 2016-2017 Buick Envision, 2016-2018 Chevrolet Colorado and Malibu, 2017-2018 GMC Acadia…Covers: GMC Terrain 2018, Canyon 2015–2018, Chevrolet Malibu 2016–2018 +6 more
Related service bulletins
- 11017173Mar 21, 2025This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
- 11010874Oct 15, 2024This bulletin provides information on how to look for and test for DEF or water in the fuel system and what the specs should be.
- 11007095Aug 7, 2024This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles…
- 11006604Aug 3, 2024This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp…
- 11004727Jun 29, 2024This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 11004761Jun 28, 2024This service 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 or…
- 11000493May 3, 2024This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part.
- 10253061Mar 4, 2024This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel…
- 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.
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 10 | 19% |
| 2023 | 22 | 54% |
| 2022 | 37 | 62% |
| 2021 | 4 | 11% |
| 2020 | 31 | 16% |
| 2019 | 4 | 2% |
| 2018 | 17 | 8% |
| 2017 | 4 | 3% |
| 2016 | 3 | 2% |
| 2015 | 18 | 6% |
| 2014 | 15 | 5% |
| 2013 | 23 | 6% |
| 2012 | 29 | 8% |
| 2011 | 48 | 12% |
| 2010 | 16 | 6% |
Other parts of the 2018 GMC Terrain
83 complaintsEngine
55 complaintsTransmission and drivetrain
42 complaintsOther or unknown
36 complaintsElectrical system
35 complaintsAir bags
14 complaintsForward collision avoidance
8 complaintsVehicle speed control
8 complaintsElectronic stability control
7 complaintsSteering
7 complaintsVisibility (wipers, defrost, mirrors)
5 complaintsSeat belts
3 complaints
← All problems reported for the 2018 GMC Terrain
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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