Diagsheet

Third generation · first-year watch

2026 GMC Terrain, day 422

  • 33complaints since Aug 6, 2025
  • 1recalls
  • 1involved a crash
  • 5,200median miles at failure

Newest report Sep 23, 2026 · checked Oct 2, 2026

Changed since August

  • 7 new complaints in September, mostly about electrical, suspension and transmission and drivetrain.
  • Nothing filed yet on sticky steering, transmission failure, engine failure or fire.
  • 21st most complaints of the 79 2026 models on this site.
2026 GMC Terrain
Photo: Deathpallie325, Wikimedia Commons, CC BY 4.0

What's been reported

NHTSA's own component codes. One report can cite several.

  • Other
    9
  • Collision avoidance
    9
  • Electrical
    5
  • Transmission and drivetrain
    5
  • Suspension
    5
  • Brakes
    4
  • Wheels
    4
  • Steering
    3

Problems so far

  • Suspension noise, struts or alignment 5 reports

Recent reports

“ABV came on. SCR alerted I needed service. On a 25 mph road I no longer could brake randomly”

Filed Jun 20, 2026

“Car aggressively shakes and steering wheel shakes / jerks itself side to side when accelerating. Getting worse with time. GMC has it as a known issue but has been for months. Problem is getting worse the more it is driven. GMC says it is “safe”.”

Filed May 12, 2026

“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.”

Filed May 12, 2026

“The car has always had an issue where it would just get stuck in a low gear and RPMs would go high. Does this every single day. But recently it also started acting like it was put into neutral for a few seconds and then back into drive.”

Filed May 12, 2026

At a glance

Next to the 2024
The 2026 is too new for a fair per-year comparison. It has 33 complaints so far; the 2024, on sale longer, has 49.
Top problem
Suspension is the one problem with a cluster of reports here: 5 of the 33 complaints (15%). Too few of the suspension reports give a mileage to say when it starts.
Crash, fire and injury reports
2 of the 33 complaints (6%) report a crash, a fire or an injury, about the 6% typical of vehicles on this site. Counted separately (one report can carry more than one), 1 report mentions a crash, 2 mention a fire and 1 person was hurt.
Recalls behind the top problems
1 recall is on file, but no problem here has enough reports to set against it.
When owners filed
Every complaint so far came in during 2025. So far in 2026, 29 more have come in.

Recalls

Whether your car is included depends on its VIN. Check yours at nhtsa.gov/recalls.

26V-114Feb 26, 2026
Equipment:Other:Owners/Service/Other Manual

General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cadillac OPTIQ, Chevrolet Colorado, Equinox EV, GMC Canyon, 2026 Buick Enclave, Envision, Cadillac CT5, Escalade, Escalade ESV, Escalade IQ, Escalade IQL, LYRIQ, VISTIQ, Chevrolet Blazer EV, Corvette Convertible, Corvette Coupe, Corvette Convertible E-Ray, Equinox, Silverado 1500, 2500, 3500, Silverado EV, Suburban 1500, Tahoe, Traverse, GMC Acadia, Hummer EV Pickup, Hummer EV SUV, Sierra 1500, 2500, 3500, Sierra EV, Terrain, Yukon, and Yukon XL vehicles. The radio may not have been set to the correct status to download the electronic owner's manual during production. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, “Occupant Protection.”

Risk and remedy
Risk: Without an owner's manual to consult, owners may not know how to safely use and operate the vehicle, increasing the risk of injury in a crash.
Remedy: Dealers will reset the vehicle radio, which will facilitate automatic download of the electronic owner’s manual, free of charge. Owner notification letters were mailed April 16, 2026. Owners may contact GM customer service at 1-866-467-9700, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-333-4223. The manufacturer's number for this recall is N252540430. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on February 26, 2026.

The recall on the 2026 GMC Terrain, with the owner complaints on each recalled system

Guide Seeing this on your own car? How to file a complaint with NHTSA

The log

Complaints by the month NHTSA received them, newest first. Blue bars mark a month with a recall or an investigation.

Sep 2026
7Electrical, Suspension
Aug 2026
4Collision avoidance, Engine
Jul 2026
2Steering, Wheels
Jun 2026
2Brakes, Structure
May 2026
3Wheels, Steering
Apr 2026
4Suspension, Windshield and wipers
Mar 2026
4Steering, Suspension
Feb 2026
2Transmission and drivetrain, Structure recall 26V-114: Equipment
Jan 2026
1Brakes, Collision avoidance
Dec 2025
2Wheels, Electrical
Nov 2025
0
Oct 2025
0
Sep 2025
0
Aug 2025
2Brakes

Questions

What is the most common problem on the 2026 GMC Terrain?

Suspension, with 5 of the 33 complaints.

At what mileage do 2026 GMC Terrain problems start?

Of the 10 complaints that give a mileage, a quarter came by about 2,000 miles and half by about 5,000.

How many 2026 GMC Terrain complaints involve a crash, fire or injury?

2 of them (6%). The typical vehicle on this site is at 6%.

Is there a recall for suspension on the 2026 GMC Terrain?

No recall on file for the 2026 GMC Terrain is on the same system as suspension. Another recall may still cover your car, so check its VIN at nhtsa.gov/recalls.

Other model years