2023 GMC Terrain fuel, hybrid & EV propulsion problems

Related recalls

No recalls on file.

What owners say

1. Filed Oct 1, 2026TXEngineFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   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…

   NHTSA complaint #11768325 · source
2. Filed Sep 20, 2026NJFuel, Hybrid & EV Propulsion

   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…

   NHTSA complaint #11765686 · source
3. Filed Aug 5, 202627,000 miMATowedEngineFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   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…

   NHTSA complaint #11754923 · source
4. Filed Jun 2, 2026CAEngineFuel, Hybrid & EV PropulsionOther / Unknown

   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…

   NHTSA complaint #11741516 · source
5. Filed May 29, 202645,000 miILTowedEngineFuel, Hybrid & EV Propulsion

   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…

   NHTSA complaint #11740826 · source
6. Filed May 26, 2026TXFuel, Hybrid & EV PropulsionAcceleration & Cruise Control

   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…

   NHTSA complaint #11740102 · source
7. Filed May 18, 2026TXFuel, Hybrid & EV PropulsionOther / Unknown

   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

   NHTSA complaint #11738493 · source
8. Filed May 14, 2026TXFuel, Hybrid & EV Propulsion

   I was driving down the hwy and all of a sudden the car went into reduced power mode and the dealership is saying it’s a high pressure fuel pump which is not covered under the standard warranty My vehicle only has 46000 miles Fennigan GMC Rosenberg tx

   NHTSA complaint #11737870 · source
9. Filed May 8, 2026TXFuel, Hybrid & EV PropulsionOther / Unknown

   Car reduced speed and the smell of gas filled the car. Car shut off. Check engine light came on with reduced speed. This is the second time this has happened. Gas leaked onto ground from car. Car stalls immediately while driving and does not allow you to press the gas to keep moving. Almost hit from behind on Main Street.

   NHTSA complaint #11736700 · source
10. Filed May 8, 2026TXFuel, Hybrid & EV Propulsion

    Car reduced speed and smells of gas. Will not crank and will stall immediately and just stops immediately. Car has only 30,000 miles and it has stalled out for the second time with the same issue. The first time the car stalled on the freeway and I was almost hit from the back. This second time reduced speed and quickly shut off on a Main Street and was almost hit again. Car does not allow you to press the gas and coast during the incident.

    NHTSA complaint #11736699 · source
11. Filed Apr 16, 2026TXEngineFuel, Hybrid & EV Propulsion

    The contact owns a 2023 GMC Terrain. The contact stated that while driving on several occasions at various speeds, the check engine warning light illuminated, the message "Engine Power Reduced" was displayed, and the vehicle lost power. The vehicle stalled on three separate occasions. The vehicle was able to restart each time after approximately 15 minutes of waiting, but the vehicle failed to accelerate above 40 MPH. The vehicle was taken to a dealer and DTC: P228C, P0089,…

    NHTSA complaint #11731486 · source
12. Filed Mar 22, 2026TNElectrical SystemFuel, Hybrid & EV PropulsionTransmission & Drivetrain

    Out of nowhere and driving this morning, my engine reduced power came on. Then I started losing power in the car then it died on me once out of nowhere. I managed to make it home an hour and a half later, but that could’ve got me killed stopped by AutoZone since dealerships closed today and it tells me that it’s code P228C, P0089 fuel pump. And then last night my emergency service calling came on which one I looked it up so something to do with OnStar and could be a module…

    NHTSA complaint #11726152 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology