The driver side seat belt is hard to lock and unlock into the clip. Sometimes it will not lock into the clip.
The worst 2023 GMC Terrain problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Fuel system22
- Engine15
- Transmission8
- Electrical7
- Driver assistance5
- Acceleration2
- Airbags2
- Body1
- Seat belts1
- Steering1
- Visibility1
Specific symptoms reported on the 2023 GMC Terrain
Check engine light 13Stalling 12Fuel pump 10Loss of power 8
Trouble codes owners of the 2023 GMC Terrain mention
P0089 3P228C 3
Recalls 2
Child seat: vehicle latch anchor
- What is wrong
- General Motors, LLC (GM) is recalling certain 2020-2023 Chevrolet Equinox and GMC Terrain vehicles. The four rear-seat lower child seat LATCH anchorage bars may have excessive powder coating, which could prevent a child seat from being installed with the anchorage bars. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 225, "Child Restraint Anchorage Systems."
- Risk
- The inability to install a child seat with the LATCH anchorage bars could result in an unsecured child seat, increasing the risk of injury in a crash.
- Remedy
- Owners are advised to install child seats using the vehicle's rear seat belts until the remedy is complete. Dealers will inspect the latch anchorage bars, and remove and replace the finish, as necessary, free of charge. Owner notification letters were mailed June 2, 2023. Owners may contact Chevrolet customer service at 1‑800‑222‑1020 or GMC customer service at 1‑800‑462‑8782. GM's number for this recall is N232403240.
Recall number 23V339000 · Recall details
Air bags: sensor: occupant classification: front passenger
- What is wrong
- General Motors, LLC (GM) is recalling certain 2023 Chevrolet Equinox and GMC Terrain vehicles equipped with ventilated front passenger seats. The Occupant Classification System may not properly disable the front passenger air bag when there is a small child or child restraint detected in the seat.
- Risk
- In the event of a crash, a front passenger air bag that deploys with a child or infant in the front passenger seat can increase their risk of injury.
- Remedy
- Dealers will replace the passenger presence system, free of charge. Owner notification letters were mailed January 24, 2023. Owners may contact Chevrolet customer service at 1‑800‑222‑1020 or GMC customer service at 1‑800‑462‑8782. GM's number for this recall is N222388911.
Recall number 22V929000 · Recall details
Technical service bulletins for the 2023 GMC Terrain 461
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This service bulletin provides information about GM Accessories
- PI created to guide technicians through radio restriction process
- Unknown or other
- Unknown or other
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- Fuel/propulsion system
- Unknown or other
- Emission Recall
- Unknown or other
- PI to help diagnose A/C concern
2023 GMC Terrain fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 1.5L 4‑cyl | FWD | 24 | 29 | 26 |
| 1.5L 4‑cyl | AWD | 24 | 28 | 26 |
What 2023 GMC Terrain owners say
Most recent owner complaints, unedited.
My 2023 GMC Terrain has experienced two separate incidents of complete loss of motive power/engine propulsion while being driven. The vehicle suddenly loses the ability to accelerate and maintain normal propulsion, creating a serious safety risk in traffic. The first occurrence was on August 8, 2026. The vehicle was subsequently diagnosed and repaired by an authorized Chevrolet dealership with General Motors involvement. After those repairs were completed and the vehicle was returned to me, the same loss-of-propulsion symptom occurred again on September 26, 2026, approximately two weeks after the vehicle was returned. The second failure occurred while I was actively driving and again resulted in the vehicle being unable to maintain normal propulsion. The vehicle required towing and is currently at an authorized GMC dealership for diagnosis. The vehicle is available for inspection. This recurring failure creates a risk to the driver, passengers, and other motorists because propulsion can suddenly be lost while the vehicle is operating on a roadway.
I purchased this vehicle two weeks ago. It was my first time driving it since I bought it home from the dealer. I was on the highway driving about 55 mph in the left lane. All of a sudden the car started to slow down on its own going down to 15 mph without knowing what was happening. I tried to ease my way to the left and was almost hit by multiple vehicles. Once I got to the left lane the vehicle stopped running. I couldn’t start it. I noticed a pool of liquid on the right side of the vehicle. I also started to detect a strong smell of gasoline. I had to get towed off the road by calling 911 for assistance. The tow truck driver also confirmed that the liquid was gasoline. I had to get the car towed twice. It is now at my mechanic awaiting his inspection. I also spoke to the dealership. Unfortunately they are too far away for me to get the car there. I’m in limbo now. I am praying that the car is still under warranty. This was a very dangerous experience and it could have been worse. I did notice a recall for fuel system failure but I did not see it on my vehicles vin number.
Harness for the airbag gave out. Puts the passenger at risk. Confirmed by service members at Rodenroth Motors Inc. in Sault Ste Marie MI. Message said service "Restraint system". There was no official incident date. One day whenever somebody sat in the passenger side the warning would appear.
adaptive cruise disengaging alert on dash- no cars or weather conditions to induce this. loss of power and bucking on highway( near accident caused) catostostrophic sudden loss of power engine/transmission failure while mechanic driving resulting in car towed back to dealer. loss of power multiple times causing near accidents. sudden jolting at stop light causing car to propel forward requiered both feet on brake pedal to stop. 4 episodes of near collision 1st altert started 04/4/2024 adaptive cruise light on dash 14,700 miles on vehicle 5 episodes continued and now car is still at dealership for emissions failure, loss of power x 4 weeks. ALL PHOTOS OF DASH LIGHTS, REPAIR INVOICES AND VIDEO OF DASH AVAILABLE BUT I AM NOT ABLE TO UPLOAD ALL.
The contact owns a 2023 GMC Terrain. The contact stated that while driving at various speeds, the vehicle unexpectedly decelerated and failed to properly accelerate. The service transmission and service fuel management system messages were displayed, and the check engine warning light was flashing with several other unknown warnings illuminated. The vehicle was taken to the local dealer and while test-driving the vehicle, the vehicle stalled. The vehicle was towed back to the dealer. The cause of the failure was not yet determined. The manufacturer was notified of the failure, and an engineer was sent to the dealer to inspect the vehicle. No further information was available. The contact stated that the transmission module was previously replaced, but the failure persisted. The failure mileage was 27,000.
I have had 2 different instances where my vehicle stops in the middle of a busy intersection or traffic and have no warning what so ever. Vehicle just shuts off and I am not able to turn back on to move out of the way. First time I got it repaired it was related to the fuel pump and now I am waiting to hear back from my mechanic to see what the issue is but so far it is an indication of the fuel pump as well. Both times I required help from law enforcement because vehicle shut off in the middle of the road and safety to myself and other drivers was an issue until tow truck arrived to move my vehicle.
The contact owns a 2023 GMC Terrain. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated and the engine stalled. The contact attempted to drive the vehicle to the shoulder of the road, the engine seized. The contact stated while attempting to start the vehicle, the vehicle failed to start. The contact The vehicle was towed to an independent mechanic where it was diagnosed with a failed fuel pump. The contact was informed that the fuel pump needed to be replaced. The failure reoccurred. The vehicle was towed back to the independent mechanic where it was diagnosed with a failed fuel injector. The contact was informed that the fuel injector needed to be replaced. The vehicle was repaired. The failure reoccurred. The vehicle was taken back to the dealer where it was diagnosed with a failed Number 3 fuel injector. The contact was informed that the fuel injector needed to be replaced. The parts were ordered, and the vehicle was being repaired. The dealer was made aware of the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 45,000.
I was driving the vehicle on the highway the cruise control was on. All of a sudden I got a warning on vehicle info panel that stated vehicle power is reduced. The vehicle decelerated on its own and I could not accelerate past 55. The check engine light came on. I pulled off the road and turned the vehicle off. After about 10 minutes, I started the car back up and proceeded down the highway at normal speed. The check engine light remained on. I stopped at a Chevrolet dealer service center in Ft Stockton, TX, to have the vehicle looked at. They could find no error codes and could not duplicate the problem. I was sent on my way. This has happened multiple times while driving on roads in my area. Mostly while on the highway.
Vehicle stalled while driving and would not restart. Strong gasoline smell present and on ground. Third occurrence. Vehicle stalled while driving at on busy road (safety issue both times). Strong raw gas smell. Would not crank afterward. Dash powered normally with check engine light. Happened previously around 27k miles in September 2025. Occurred again May 9, 2026. Occurred again today l, May 18, 2026. Vehicles is being towed to dealership again for the 3rd time
Compare the 2023 GMC Terrain
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Other model years
201020112012201320142015201620172018201920202021202220232024202520262027
Questions about the 2023 GMC Terrain
Is the 2023 GMC Terrain reliable?
Owners have filed 41 complaints about the 2023 GMC Terrain, fewer than a typical Terrain model year.
What is the most common problem with the 2023 GMC Terrain?
Fuel and propulsion system, with 22 complaints, typically around 35,600 miles. Next is engine (15).
How many recalls does the 2023 GMC Terrain have?
2 recalls, covering child seat and air bags.
What year does the GMC Terrain have the most fuel system problems?
The GMC Terrain model years with the most fuel system complaints are 2011 (48 complaints), 2022 (37 complaints) and 2020 (31 complaints).
What gas mileage does the 2023 GMC Terrain get?
Official estimates for the 2023 GMC Terrain range from 26 mpg combined. The most efficient version (1.5L 4-cyl, FWD) gets 24 city and 29 highway.
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