2018 GMC Terrain Other or unknown Problems
- Complaints
- 36about this part
- Share
- 16%of 226 total for the year
- Median mileage
- 6,050miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 36 complaints about the other or unknown of the 2018 GMC Terrain, 16% of the 226 complaints for this model year. Where a mileage was given, the median is 6,050 miles. 1 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“When I drive my car after coming out of reverse the car revs up between 35 and 45 rpms. This is when it is going about 25 MPH. When I remove my foot from the gas the car jerks violently forward and rpms drop to 25rms. When I give it some gas the rpms go up again to the 35-45 RPM. The only way to get this to stop is to pull over, put the car in park, turn off the car and open the door. I let it sit for about 10 min and then turn it back on and drive. …”
NHTSA complaint #11181968, filed 2019-02, 5,100 miles“The car keeps revving and doesn't shift into gear. You have to lift your foot off the gas pedal and give it a few seconds and them press it again. However when you press the gas again the car jumps into gear causing the steering wheel to jerk either left or right. It either revs too high or it feels like it downshifts. This last time, 9/8/20, I just reversed out of my driveway onto my residential street, going about 18 MPH when the car would not shift into 2nd gear. …”
NHTSA complaint #11354314, filed 2020-09, 18,500 miles“My auto started leaking some kind of oil.not sure what kind but I can see accumulation on driveway concrete pad. Had motor oil & filter changed in case it was a o-ring or not tight enough. It continues to leak.”
NHTSA complaint #11405404, filed 2021-03, 65,000 miles“While driving, the infotainment system goes black, no audio - then reboots after a minute or two. I have detected a burning smell as well, but cannot determine if it is coming from my vehicle or outside. This has happened 5 times and the dealer is telling me they can not replicate or find anything wrong. Very frustrating!!! This has happened shortly after leaving home, while driving on city roads, after driving a while, on the highway, stopped at a red light. There is so specific time or frequency that this occurs. …”
NHTSA complaint #11233143, filed 2019-07, 300 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 milesRelated service bulletins
- 11037555Sep 26, 2026This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- 11037253Sep 4, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11035340Jul 21, 2026PI to help diagnose A/C concern
- 11030974Apr 1, 2026This preliminary information communicates information about how to determine if a wheel and tires size change is available.
- 11030360Mar 27, 2026This preliminary information discusses a condition that may arise from the drivers window switch sending an errant message causing the vehicle to enter manual fob learn mode.
- 11030092Mar 9, 2026This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
- 11030091Mar 9, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11027601Jan 8, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11025755Nov 20, 2025This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s…
- 11023091Sep 9, 2025New Vehicle Monitoring Programs Section in IVH
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 9 | 27% |
| 2025 | 2 | 15% |
| 2024 | 12 | 23% |
| 2023 | 7 | 17% |
| 2022 | 9 | 15% |
| 2021 | 4 | 11% |
| 2020 | 36 | 18% |
| 2019 | 21 | 11% |
| 2018 | 36 | 16% |
| 2017 | 20 | 15% |
| 2016 | 13 | 9% |
| 2015 | 21 | 7% |
| 2014 | 16 | 5% |
| 2013 | 27 | 7% |
| 2012 | 37 | 10% |
| 2011 | 34 | 9% |
| 2010 | 18 | 6% |
Other parts of the 2018 GMC Terrain
83 complaintsEngine
55 complaintsTransmission and drivetrain
42 complaintsElectrical system
35 complaintsFuel system
17 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 28, 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