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Forward collision avoidancePart report

2026 GMC Terrain Forward collision avoidance Problems

Complaints
6about this part
Share
18%of 33 total for the year
Median mileage
—not reported
Trend
Too newThis model year is less than 4 years old, so a trend is not meaningful yet.

NHTSA recorded 6 complaints about the forward collision avoidance of the 2026 GMC Terrain, 18% of the 33 complaints for this model year.

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.

“Two issues here. First is that the car will give a danger warning when nothing is there. Sometimes goes as far as slamming on my breaks. Both in drive and reverse. Second is the lane keep assist. It’s like it is working backwards. I turned this all off because it would jerk me out of the lane and into the other lane or off to the sides of the road.”

NHTSA complaint #11737214, filed 2026-05

“When starting to accelerate from a red light. The car in front of us was accelerating faster. Yet our car initiated an emergency braking action at around 15 MPH. It was very jarring and I still have a headache more yhan 1 hour after the incident.”

NHTSA complaint #11760736, filed 2026-08

“I was driving (roughly about 30 MPH) when my automatic braking kicked on and caused my tires to squeal to a halt. There were no other cars around me (thankfully) - otherwise I would have been rear-ended. Right before it stopped, it flashed the warning lights for a quick second. I wanted to report this issue in case others are experiencing the same problem and to hopefully help prevent it from happening to someone else. Very scary and could cause a serious accident. …”

NHTSA complaint #11707983, filed 2025-12

“The system that failed was the brakes, The car is availble for inspection. My saftey and others was put at risk due to not having brakes to stop. The problem has been confirmed by a dealer as a master brake cylinder failer The vehicle has been inspected by the dealer. There were warning lamps, message and other symptoms of the problem prior to the failure. They first appearead on December 4 2025”

NHTSA complaint #11710663, filed 2026-01

Related service bulletins

Forward collision avoidance: other model years

YearComplaintsShare of year
2026618%
2025215%
202436%
202325%
202223%
202138%
202084%
201963%
201884%
201611%
201510%
201410%
201321%
201210%

Other parts of the 2026 GMC Terrain

Other or unknown
9 complaints
Electrical system
5 complaints
Suspension
5 complaints
Transmission and drivetrain
5 complaints
Brakes
4 complaints
Wheels
4 complaints
Steering
3 complaints
Lane departure
2 complaints
Body and structure
2 complaints
Back-over prevention (rear camera)
1 complaints
Engine
1 complaints
Latches, locks and linkages
1 complaints

← All problems reported for the 2026 GMC Terrain

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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