2026 Gmc Terrain problems, complaints & recalls
Most-reported problem areas: Wheels (4) · Power Train (4) · Service Brakes (3)
🧭 Reliability snapshot
Compared against other Gmc Terrain model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (1)
Equipment:other:owners/Service/Other Manual 2026-02-26 · campaign 26V114000 · 5,861 vehicles
Defect: 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, Terra
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.
Fix: 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,
Service bulletins (177)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-10-24 · PIT6368F · Service Bulletin/Repair Instructions
this preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener and to replace the opener with a new updated part.
Unknown Or Other 2026-10-20 · Infotainment 2026.4 · Over The Air
• more responsive map controls when switching views • trailer theft alert settings are saved between drives • more reliable access to on-screen controls for temperature, fan speed, and heated seats • improvements that help prevent the center display from freezing or unexpectedly losing audio
Unknown Or Other 2026-10-19 · GM Update 20.50 · Over The Air
great news! your vehicle keeps getting better. this update contains a required software change to help improve the overall software update and diagnostics process. during the update process, your radio may stay on up to 5 minutes after you exit the vehicle. this is expected behavior when an update
Unknown Or Other 2026-10-19 · Telematics 2026.4 · Over The Air
• improved ecall system performance
Unknown Or Other 2026-10-17 · PIP6138 · Service Bulletin/Repair Instructions
this preliminary information communicates the potential for shudder and all cylinder misfire concerns on rpo lsd
Unknown Or Other 2026-10-15 · PIT6556 · Service Bulletin/Repair Instructions
this preliminary information, describes a condition where the hvac will make noise when changing modes while hvac is warm. engineering is aware and no fix available at the time.
Showing the 6 most recent of 177 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-09-23 · Forward Collision Avoidance: Warnings“on the evening ofxxx, at approximately 6:00 pm, i was driving this avis rental vehicle on a highway in [xxx] at normal highway speed, below the posted limit, with my foot on the accelerator. the forward collision warning and automatic emergency braking system activated and applied the brakes hard. there was no vehicle, pedestrian, obstacle, or haza…”
2026-09-21 · Vehicle Speed Control“a failing telematics module on your 2026 gmc terrain is causing network corruption, leading to an erratic speedometer and loss of driver assistance systems while driving.…”
2026-09-19 · Unknown Or Other“my vehicle is making a squeaky sound/noise when breaking and getting louder. i took it in for service and they couldn’t seem to find the issue. it’s coming from the front end of the vehicle …”
2026-09-18 · Suspension“shimmy, shake, wobble, after tsb 26-na-109 repair, replace front springs, vehicle feels less stable at highway speeds. the initial condition, shimmy, shake, wobble, under moderate acceleration, still exists after last repair attempt.…”
2026-09-14 · Latches/Locks/Linkages · 2,500 mi“the contact owns a 2026 gmc terrain. the contact stated that while driving 10 mph and pulling into a parking lot, the vehicle was shifted into drive(d) and the driver’s door lock unexpectedly unlocked. the contact stated that on another occasion, a passenger in the front passenger’s seat noticed the same failure with the passenger’s side door lock.…”
2026-09-11 · Power Train“avis rental. vehicle simply shut down while driving and would not re-start. vehicle could not be put into neutral to move from roadway. emergency services vehicles had to remain on site awaiting tow vehicle. very dangerous situation.…”
2026-09-01 · Unknown Or Other“i recently pulled over to help a woman driving a 2026 gmc terrain who had run out of gas in the middle of xxx in virginia. obviously, the first priority was to get the vehicle out of the travel lanes and onto the shoulder. i tried to figure out how to put the terrain into neutral so we could move it, only to discover that **the vehicle cannot be s…”
2026-08-30 · Forward Collision Avoidance: Automatic Emergency Braking“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. …”
2026-08-23 · Forward Collision Avoidance: Warnings“subject: urgent: unresolved ongoing vehicle issues - request for contact to whom it may concern, i am writing to express my strong frustration regarding ongoing and unresolved issues with my vehicle. ever since i purchased it, i have been plagued by constant alerts regarding various vehicle failures. my vehicle has already been reset and updated…”
2026-08-06 · Electrical System:adas:blindspot:software · 11,350 mi“the contact owns a 2026 gmc terrain. the contact stated that after a software update was performed, while driving at an undisclosed speed, the message "departure lane limited due to the trailer" was displayed. the failure affected the blind spot warning system. the warning light failed to display while approaching a vehicle on the blindside and err…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.