Safety Score
70
Average
Recalls
0
Complaints
50
NCAP Stars
—
Recalls (0)
No recalls found for the 2020 GMC Terrain.
Owner Complaints (showing up to 50)
| Date | Component | Crash | Injuries | Summary |
|---|---|---|---|---|
| 2026-03-04 | SERVICE BRAKES | No | 0 | I was driving 55 miles an hour on an Expressway. And suddenly my truck just shut off.The brake became very hard unable … |
| 2026-02-21 | SERVICE BRAKES | No | 0 | While driving I received a "service brake assist system" alert and a check engine light. After this happened the brakes… |
| 2026-01-26 | ENGINE | No | 0 | Catastrophic engine failure; no warning lights,etc. took place on or about end of January 2026. Car completely died an… |
| 2026-01-22 | UNKNOWN OR OTHER | No | 0 | I own a 2020 GMC Terrain with approximately 110,000 miles. While driving in winter, the vehicle suddenly lost cabin hea… |
| 2026-01-09 | ELECTRICAL SYSTEM | No | 0 | The contact owns a 2020 GMC Terrain. The contact stated that while driving in cold weather at various speeds; moisture … |
| 2025-12-24 | SERVICE BRAKES, HYDRAULIC | No | 0 | The contact owns a 2020 GMC Terrain. While the contact’s wife was driving approximately 40 MPH and attempting to depres… |
| 2025-12-15 | UNKNOWN OR OTHER | No | 0 | The article below appears online, 4/13/2026. I have the exact same problem with my 2020 GMC Terrain Denali and I would… |
| 2025-12-14 | SERVICE BRAKES | No | 0 | While driving down the interstate a notice popped up on my dash about the brake assist. When I attempted to slow down … |
| 2025-12-14 | ELECTRICAL SYSTEM | No | 0 | Towards the tail end of a nearly 2.5 hour drive, the Automatic Theft Deterrent System was activated on the interstate.… |
| 2025-12-14 | SERVICE BRAKES | No | 0 | Since August 2024, my brake booster has gone a total of five times each time with the notification on the dash service … |
| 2025-12-13 | ENGINE | No | 0 | The intercooler has been a document problem on GMC Terrains for awhile now. I had my intercooler replaced and now less … |
| 2025-12-09 | FUEL/PROPULSION SYSTEM | No | 0 | Re: 2020 GMC Terrain. Our fuel pump control module (FPCM) unexpectedly failed after driving a short distance. Vehicle… |
| 2025-11-29 | SERVICE BRAKES | No | 0 | While driving my brakes failed. I was unable to stop my car, my brake pedal became very stiff and I could not stop my c… |
| 2025-11-28 | SERVICE BRAKES | No | 0 | While driving on a main road at around 45mph the vacuum pump that supplies brake fluid to the brakes failed. The car wa… |
| 2025-11-26 | SERVICE BRAKES, HYDRAULIC | No | 0 | The contact owns a 2020 GMC Terrain. The contact stated that while driving up the driveway at approximately 10 MPH, the… |
| 2025-11-21 | ELECTRICAL SYSTEM | No | 0 | My a/c went out within 2 years of having the car in 22’. In 2025 i have had nothing but problems, the radio will go out… |
| 2025-11-15 | POWER TRAIN | No | 0 | The contact owns a 2020 GMC Terrain. The contact stated that while driving 35 MPH and depressing the accelerator pedal … |
| 2025-11-11 | SERVICE BRAKES | No | 0 | Vacuum pump went out. It was a recall, previously on older models, but this model needs to |
| 2025-11-08 | UNKNOWN OR OTHER | No | 0 | I was driving on the highway below the speed limit when I heard a pop that sounded like a balloon and instantly the sou… |
| 2025-11-02 | BACK OVER PREVENTION | No | 0 | The contact owns a 2020 GMC Terrain. The contact stated that upon shifting to reverse(R), the rear-view camera image wa… |
| 2025-11-02 | SERVICE BRAKES | No | 0 | I filed a complaint with NHTSA on November 3, 2025, about my brake system. Here is another one adding more information… |
| 2025-11-02 | SERVICE BRAKES | No | 0 | Check engine light is on took vehicle to dealership 10/13/2023 vacuum booster sensor replaced (37,435 miles) $0 GM Co… |
| 2025-10-23 | UNKNOWN OR OTHER | No | 0 | The Vehicle Identification Number for this vehicle is not recognized in the NHTSA program. From Online vehicle registra… |
| 2025-10-22 | SERVICE BRAKES | No | 0 | Break assist light comes on and brakes stiffen suddenly with no warning. Happened 6 times now in a 3 year span. Gotten … |
| 2025-10-01 | ELECTRICAL SYSTEM | No | 0 | Backup camera not working and has a blue screen. The camera was replaced. The fuses & wires were inspected and the scre… |
| 2025-09-19 | SERVICE BRAKES | No | 0 | On my 2020 GMC terrain the vacuum pump failed and caused my braking system to go out completely. I had to almost stand … |
| 2025-09-16 | SERVICE BRAKES | Yes | 0 | My 2020 GMC Terrain brakes pump failed causing me to hit the median wall on the highway. |
| 2025-09-15 | SERVICE BRAKES | No | 0 | While driving my 2020 GMC Terrain (VIN: [XXX] ) with approximately 110,501 miles, I experienced a sudden and complete l… |
| 2025-09-13 | FUEL/PROPULSION SYSTEM | No | 0 | From a complete stop my car refused to accelerate no matter how much I pushed the gas pedal. I was pulling into traffic… |
| 2025-09-09 | SERVICE BRAKES | No | 0 | Driving down the road and an engine power reduced light came on and then the driver was not able to apply the breaks to… |
| 2025-09-08 | FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP | No | 0 | The contact owns a 2022 GMC Terrain. The contact stated while depressing the accelerator pedal from a complete stop, th… |
| 2025-08-24 | ELECTRICAL SYSTEM | No | 0 | Sunroof/moonroof/sunshade and frame leaking for 2nd time. |
| 2025-08-21 | SERVICE BRAKES | No | 0 | Driving down busy highway and suddenly had no brakes!!! No lights came on dashboard as a warning. Found out it was a br… |
| 2025-08-19 | ENGINE | No | 0 | First problem was when the ac went out which affected the starter 2 weeks after that while I was driving something popp… |
| 2025-08-14 | SERVICE BRAKES | No | 0 | I was driving on the expressway, attempted to brake and the brakes were stiff and would not go down to stop the vehicle… |
| 2025-08-13 | ENGINE | No | 0 | I have been having intermittent problems for well over 1 year with my vehicle not accelerating. I try to accelerate fro… |
| 2025-08-05 | SERVICE BRAKES | No | 0 | As I was driving down the Ohio Turnpike on my way to work on Tuesday, August 5, 2025, my check engine light came on. Al… |
| 2025-08-03 | UNKNOWN OR OTHER | No | 0 | The bolts fell out and the bracket that holds the drive shaft in place fractured while driving. |
| 2025-07-12 | POWER TRAIN | No | 0 | I have been experiencing loss of power when going from a full stop to acceleration. I purchased my 2020 Terrain. I almo… |
| 2025-07-08 | POWER TRAIN | No | 0 | The contact owns a 2020 GMC Terrain. The contact stated that while making a turn, the transmission shifted into neutral… |
| 2025-06-30 | SERVICE BRAKES | No | 0 | I was driving on the highway & my brakes failed. My brake pedal was completely hard & could not be used. i had to steer… |
| 2025-06-30 | FUEL SYSTEM, GASOLINE | No | 0 | The contact owns a 2020 GMC Terrain. The contact stated while driving at an undisclosed speed, the vehicle lost motive… |
| 2025-06-22 | ENGINE | No | 0 | On 6/22/2025, brakes stopped working while trying to make a turn. Next multiple engines light came and car went into r… |
| 2025-06-10 | SERVICE BRAKES | No | 0 | I got off a highway exit ramp and with no warning my brakes were hard to press. There was no warning lights on my dash.… |
| 2025-06-01 | ENGINE | No | 0 | While my wife was driving on [XXX] speed (60 –70 mph), the engine suddenly seized without warning. This created a dang… |
| 2025-05-26 | SERVICE BRAKES | No | 0 | On Monday 5/26/2025 I was on the way home from work, coming down my street to turn in my drive (at approximately 2130) … |
| 2025-05-25 | ELECTRICAL SYSTEM | No | 0 | 5.25.2025 - Car shut down while at a busy intersection. Called Amherst Police due to location and how dangerous the int… |
| 2025-05-02 | ENGINE AND ENGINE COOLING | No | 0 | The contact owns a 2020 GMC Terrain. The contact stated while driving 45 MPH, the vehicle inadvertently lost motive pow… |
| 2025-05-01 | ELECTRICAL SYSTEM | No | 0 | [XXX] once again while diving down the road 45mph Terrain once again goes in to park ,I was lucky the lady behind me wa… |
| 2025-03-13 | FUEL/PROPULSION SYSTEM | No | 0 | Having problems with fuel system |