2018 GMC Terrain Forward collision avoidance Problems
- Complaints
- 8about this part
- Share
- 4%of 226 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 8 complaints about the forward collision avoidance of the 2018 GMC Terrain, 4% of the 226 complaints for this model year. 1 of these say a crash was involved, according to the filers.
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.
“Car is losing go power when accelerating on to interstate. It’s like the transmission loses power, the d illuminates, and then it kicks in to drive. It puts us at risk for an accident and I had a semi almost hit me because of this. This has been reproduced at the mechanic shop as well. No warnings before this happens”
NHTSA complaint #11545136, filed 2023-09“The Service Brake Assist issue in other 2018 GMC SUVs is happening in the 2018 GMC Terrain, but it is not part of the recall. Our brakes became EXTREMELY difficult to press right as we were turning onto the on ramp of an expressway. Thankfully we were smart enough to pull over and not get on the highway. Had we done so, I may not have been here to type this complaint. The brakes be come extremely difficult to press and that message shows. …”
NHTSA complaint #11419173, filed 2021-06“Vehicle stuck in emergency assist mood. Without warning I couldn't slow down/stop without putting alot of my weight on the brake breaks were so hard to press down.”
NHTSA complaint #11483976, filed 2022-09“On 9/3/23 I was travelling down interstate 94 in Illinois when all of a sudden my check engine light came on. Not knowing what the issue was, but knowing that the car still seemed to be OK and I was only a few miles from home I decided to drive home and figure out the issue from there. At this point I had no idea that the brakes had completely locked up. Once I realized what was happening I did my best to slow the vehicle down by decelerating, frantically pumping on the locked up brakes, and then finally slowing enough to take an exit and roll in to a gas station. …”
NHTSA complaint #11542866, filed 2023-09“It starts to “warn” you by the seat doing whatever it does and the dash lights up collision flashing and slams on the brakes when nothing is even around”
NHTSA complaint #11682338, filed 2025-08Related service bulletins
- 11011406Oct 1, 2024This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert"…
- 10251704Feb 21, 2024This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert"…
- 10247351Nov 9, 2023This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert"…
Forward collision avoidance: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 6 | 18% |
| 2025 | 2 | 15% |
| 2024 | 3 | 6% |
| 2023 | 2 | 5% |
| 2022 | 2 | 3% |
| 2021 | 3 | 8% |
| 2020 | 8 | 4% |
| 2019 | 6 | 3% |
| 2018 | 8 | 4% |
| 2016 | 1 | 1% |
| 2015 | 1 | 0% |
| 2014 | 1 | 0% |
| 2013 | 2 | 1% |
| 2012 | 1 | 0% |
Other parts of the 2018 GMC Terrain
83 complaintsEngine
55 complaintsTransmission and drivetrain
42 complaintsOther or unknown
36 complaintsElectrical system
35 complaintsFuel system
17 complaintsAir bags
14 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