2025 GMC Terrain

Owner complaints

What owners report most

1. Electrical system4
2. Power train4
3. Steering3
4. Unknown or other2
5. Suspension2
6. Wheels2
7. Service brakes2
8. Engine2
9. Forward collision avoidance2
10. Service brakes, hydraulic1

Latest complaints

• Aug 29, 2026NY
  Forward collision avoidance › Automatic emergency braking · Power train · Service brakes
  Two problems with this vehicle: 1) Transmission occasionally slips on the 2-3 shift which the dealer says he cannot duplicate. Vehicle was brought in four times for this problem. According to the dealer GM corporate has stated the transmission is working within normal parameters, since no codes…

  Two problems with this vehicle: 1) Transmission occasionally slips on the 2-3 shift which the dealer says he cannot duplicate. Vehicle was brought in four times for this problem. According to the dealer GM corporate has stated the transmission is working within normal parameters, since no codes were found. 2) Vehicle auto braking randomly slams on the brakes with nothing in its path. Dealer states turn off system to just Alert only not Alert and Brake. No codes were set. Fortunately no one was behind me as this could have caused me to be rear ended by another vehicle. In both cases it appears that if no codes are set the problem does not exist. Nov. 21, 2025, Feb. 12, 2026, July 09, 2026, Aug. 28, 2026.

• Jun 25, 2026INCrash1 injury
  Air bags · Steering · Wheels
  I was driving north on [XXX] when I felt a slight pull to the right. I figured it was my lane assist even though I was in my lane. Seconds later it felt like if someone was in my passenger seat and just yanked my steering wheel to the right hitting the guardrail. My whole tire and the assembly was…

  I was driving north on [XXX] when I felt a slight pull to the right. I figured it was my lane assist even though I was in my lane. Seconds later it felt like if someone was in my passenger seat and just yanked my steering wheel to the right hitting the guardrail. My whole tire and the assembly was off but everything was still intact to the tire. The tie rods, axle, ball joints, the whole assembly. During investigation I was told by the mechanic that the stabilizer bar was a clean break. There was damage to the front end and all down the side. I was told by GM that the force of the impact was what ripped off my tire but it was not enough impact or damage to deploy the airbags. I was on crutches for my left leg, bruising and scar now from a huge abrasion to my right arm. Still having right shoulder pain. I sent all this to the attorney General and they tried to mediate but Afton from GM told Mike that he contacted me 3 times and I did not return her calls. I called her a left her multiple messages and she has not returned my calls. I only had the car for a few months with 5,000 miles on it. I put $2,500 down then had to turn around and get a used vehicle, put another $2,000 down and making the same payment due to the hit on my credit for a 2023 plain vehicle. Plus my insurance went up, missed work, medical bills, etc. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

• May 12, 2026MA
  Electrical system · Unknown or other · Vehicle speed control

  OnStar module not working

• May 5, 2026AK
  Power train
  Car locks itself into 2 Wheel Drive when conditions are "unfavorable" meaning sometimes rain and most commonly in cold weather. If anyone has driven on snowy and icy roads during the winter, they know how much of a problem this can cause in the winter. Not only has the dealership's maintenance…

  Car locks itself into 2 Wheel Drive when conditions are "unfavorable" meaning sometimes rain and most commonly in cold weather. If anyone has driven on snowy and icy roads during the winter, they know how much of a problem this can cause in the winter. Not only has the dealership's maintenance department not been able to diagnose the issue but GM themselves are refusing to acknowledge this problem as well. This is a huge safety hazard given the instability of the vehicle driving in those conditions, especially if you cant gain traction while on a busy road. The only indicator is the light that shows AWD and 2WD is in 2WD and an orange color. This is a big accident waiting to happen, if it hasn't happened to someone else already, given the state I've seen some of the newer models in.

• Apr 1, 2026FL
  Service brakes · Steering · Suspension
  My SUV pulls hard to the right when braking at speeds above 50 mph and much more on the interstates at 65 mph and above. I first experienced this after three weeks of ownership on a drive up I-95 on a trip to NC. It has happened numerous times while traveling on the interstates and has almost…

  My SUV pulls hard to the right when braking at speeds above 50 mph and much more on the interstates at 65 mph and above. I first experienced this after three weeks of ownership on a drive up I-95 on a trip to NC. It has happened numerous times while traveling on the interstates and has almost caused loss of control when having to brake hard when cut off by another driver or traffic suddenly coming to a stop. The vehicle has been to the service department numerous times....at first they suspected a braking issue and have had both calipers replaced, all brake lines replaced, lower control arms replaced and the right side strut replaced. None of these repairs have solved the problem. The factory service rep who took over the situation tested 3 other GMC 2025 Terrain suvs and all had the same problem. He reported the issue on a safety report to GM in Michigan and the response from GM was that it is a normal condition for the Terrain models. I have never owned, driven, or ridden in another vehicle in over 50 years of driving which performed like this, this is not a normal condition in my opinion.

• Feb 13, 2026FLCrash
  Power train · Unknown or other
  Vehicle did not go into park when the ignition was turned off. Car started to roll while passenger was getting out of the vehicle as another vehicle was parking beside us. The other vehicle could not avoid our rolling vehicle. Passenger had to quickly sit down to avoid being hit. The next day the…

  Vehicle did not go into park when the ignition was turned off. Car started to roll while passenger was getting out of the vehicle as another vehicle was parking beside us. The other vehicle could not avoid our rolling vehicle. Passenger had to quickly sit down to avoid being hit. The next day the vehicle was taken to the dealership, and they could not find anything wrong. They gave us a copy of bulletin#08-07-30-026I. We were not aware of any problems or bulletins being issued prior to the accident. We had repairs of $2,705.71 and don't know what the other driver incurred.

• Feb 9, 2026AL1,126 mi
  Engine · Service brakes, hydraulic
  The contact owns a 2025 GMC Terrain. The contact stated that while his wife was driving approximately 40 MPH on wet roads, the brake pedal was depressed, but the brake pedal was stiff, preventing the vehicle from slowing down as intended. There were several unknown warning lights illuminated during…

  The contact owns a 2025 GMC Terrain. The contact stated that while his wife was driving approximately 40 MPH on wet roads, the brake pedal was depressed, but the brake pedal was stiff, preventing the vehicle from slowing down as intended. There were several unknown warning lights illuminated during the failure. The accelerator pedal was released, and the vehicle rolled to a stop. The vehicle was turned off and restarted, but the check engine warning light remained illuminated. The vehicle was pulled over to the side of the road and turned off. The vehicle was then towed to a dealer, where it was diagnosed, and determined that the brake control module needed to be replaced. The vehicle was repaired, but the failure reoccurred approximately 7 months and 2 weeks later. The manufacturer was notified of the failure. The failure mileage was approximately 1,126.

• Jan 19, 2026WV
  Electrical system · Engine

  Vehicle wouldn’t unlock/start with primary key fob or secondary key fob. Tried manual entry with both key fobs still could not enter.

• Jan 6, 2026IN
  Forward collision avoidance › Warnings · Lane departure › Blind spot detection · Structure › Body

  Top of roof pops when you shut car door, Leaking either transmission fluid or oil, Left turn signal doesn't stay engaged when turning, Side mirror warning lights randomly go off when no car is around. Car is not shifting correctly when driving

• Aug 28, 2025NJ
  Visibility/wiper

  I just purchased a brand new 2025 Terrain. The entire windshield is defective. The glass is distorted and causing visual impairment. It is VERY unsafe. I have contacted the dealership multiple times and have not yet received a response.

• Aug 20, 2025MO
  Electrical system · Power train
  Incident 1: Pulled out from stop sign car made funny noises, light came on said it couldn't shift to drive. Had towed to dealer. They said couldn't find issue except it was quart and a half low of transmission fluid. The car had approx 3,500 miles on it. Incident 2: For about two weeks when pulling…

  Incident 1: Pulled out from stop sign car made funny noises, light came on said it couldn't shift to drive. Had towed to dealer. They said couldn't find issue except it was quart and a half low of transmission fluid. The car had approx 3,500 miles on it. Incident 2: For about two weeks when pulling out felt like it was skipping but didn't feel like transmission. Felt like over powered. Then it done same as Incident 1. Pulled out made noise would not move. Notice that is couldn't shift and check engine light came on had it towed again. Approx 6,300 miles on it. They then said it was very low on transmission fluid and they did find a small hole in hose. Danger is pulling out and it just stops in cross traffic and won't move could easily be hit. It is very scary to drive not knowing if or when it is going to happen. I have no current invoice on vehicle as it is still in shop.

• Jul 4, 2025IA
  Steering · Suspension · Wheels

  When driving down the interstate the vehicle sways and makes steering challenging. Potential lack of control when hitting bumps on road at highway speeds. Taken to the dealership that sold the vehicle. They confirmed the issue. No warnings lights or notifications at this time.

• May 2, 2025GA
  Electrical system
  The contact owns a 2025 GMC Terrain. The contact stated while driving at an undisclosed speed, the infotainment system displayed a blank screen. The contact pulled over to the right side of the road into a gas station and turned off and restarted the vehicle, and the infotainment system displayed a…

  The contact owns a 2025 GMC Terrain. The contact stated while driving at an undisclosed speed, the infotainment system displayed a blank screen. The contact pulled over to the right side of the road into a gas station and turned off and restarted the vehicle, and the infotainment system displayed a message "Update Failed - See Dealer to Restore System". The dealer was contacted. The vehicle was not taken to the dealer or an independent mechanic to be diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 11012003This service bulletin provides a service procedure to correct customer concerns of Air Conditioning (A/C) Not Working and/or Blows Warm Air.
• 11012001This Preliminary information communicates to dealership technicians that if they encounter a vehicle with this issue, they can contact TCSC to have the software for the MDI backdated to communicate properly.
• 11011996This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative.
• 11011989This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
• 11011963this bulletin advises the tech of a normal operation of the 8 speed transmission and to verify using the scanner that the trans is in working order.
• 11011900This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
• 11011885This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed overthe air update.
• 11011872This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
• 11011805This Preliminary information communicates a GM part number forreflective high temperature heat or insulating tape when repairing wiring harnesses.
• 11011709This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
• 11011694This Preliminary information communicates Thus the active safety systems maybe inoperable and to perform a module reset to correct.
• 11011693This Preliminary information communicates how to recover the Image Processing Module.
• 11011691This preliminary information discusses apossible scenario where the rear camera signal cuts out intermittently due to a software concern.
• 11011465This Preliminary information communicates to dealership technicians that if they encounter a vehicle with this issue, they can contact TCSC to have the software for the MDI backdated to communicate properly.
• 11011367This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope.
• 11011339This Preliminary information communicates possible transmission fluid leak in the torque converter housing area from loose pump bolts.
• 11011325This preliminary information discusses trailer lighting inoperative after a hitch is installed.
• 11011319This preliminary information discusses a possible stall or no crank condition caused by a loose ground.
• 110113172025 GMC Terrain New Model Features
• 11011212This Preliminary information communicates to dealership technicians that if they encounter a vehicle with this communication issue, they can contact TCSC to have the software for the MDI backdated to communicate properly.
• 11011205This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
• 11010728This bulletin offers Information on Block Heater Cord.
• 11010576This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center (WPC) must be shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC.
• 11010545This service bulletin provides information on key code security rules and information on GM keycode look-up applications (U.S).
• 11010495This bulletin provides information on Warranty Administration Required Operating Procedures - 8 Points (U.S. Only).
• 11010493This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
• 11010492This service bulletin provides information for dealers/technicians on New Labor Operations for Limited Production Option (LPO) Calibrated Accessories.
• 11010491This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
• 11010490This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
• 11010488This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.
• 11010421This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
• 11009764This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
• 11009760This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
• 11009756This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
• 11009532This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
• 11009531This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
• 11009088This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
• 11009039This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
• 11009037This service bulletin provides information on Enhancing Field Product Reports with Digital Pictures.
• 11008980This Preliminary information communicates the possibility ofreduced power with dtc P0237 and/or p0299 due to damaged Charge Air Inlet Pipe connection at Turbocharger.

Every GMC Terrain model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.