2013 GMC Terrain fuel system problems

Filed Jan 7, 2026 · Engine, Fuel system · FL

The exhaust and emissions system appears to have failed or is malfunctioning, including the catalytic converter and potentially the exhaust manifold or upstream exhaust components. The engine and fuel/propulsion system are also affected, as evidenced by sputtering and drivability issues. The vehicle and affected components are available for inspection upon request. Exhaust and/or fuel fumes enter the passenger cabin, particularly when the heater or air conditioning is operating. This creates a risk of exposure to harmful exhaust gases, including potential carbon monoxide, which poses a serious health and safety risk to vehicle occupants. The vehicle also sputters and hesitates, which could lead to unsafe driving conditions, especially in traffic or at highway speeds. Yes. The issue has been confirmed through diagnostic trouble codes indicating catalytic converter efficiency failure. Despite replacement of spark plugs and sensors, the problem continues to recur, indicating an underlying exhaust or emissions system defect rather than routine maintenance. The vehicle has been inspected by service professionals for diagnostic purposes. The manufacturer has not physically inspected the vehicle, and no inspections have been performed by police or insurance representatives to date. The check engine light illuminated prior to and during the issue. Additional symptoms included engine sputtering, loss of smooth acceleration, and a strong exhaust or fuel odor inside the cabin when the HVAC system is in use. These symptoms have recurred over time despite repairs.

Filed Nov 9, 2024 · Fuel system · IN

vehicle started running rough when driven, mechanic found fuel pump putting fuel into oil. could have caught fire! pump replaced and trashed. check engine light was only warning other then rought running engine.

Filed Jun 22, 2024 · Engine, Fuel system · NC

The engine locked up due to oil leaking into it. This is a known issue with GM on these model cars but instead of issuing a recall they issued a special warranty that expired leaving consumers with these vehicles to be responsible for this repair which cost over $8,000.

Filed Apr 7, 2024 · Fuel system · MO

When refueling, and having the fill nozzle locked on for auto shutoff, the fuel overflows and drains out of the fuel fill cavity and drips on the right rear tire. This usually results in gasoline smell in the car. This happens on most fuel nozzles. I should have reported it years ago.

Filed Nov 24, 2023 · Engine, Fuel system · ME

When driving vehicle loses power, upon pushing accelerator there is no acceleration and vehicle keeps losing speed. This happens at any given time.

Filed Dec 6, 2022 · Engine, Fuel system · TX

While driving on the highway at speed limit 75mph, the vehicle (without warning ⚠️) suddenly went into (Reduced Power Engine Mode/ Service Stabilitrack) jerked and slowed down to 35mp almost causing a pile up as cars behind and next to me where still driving above 70mph. If not for my quick reaction to turn on emergency lights cars behind me would have hit me. Immediately after I got off the highway I drove the car (at 35mph as fast as it went) to my nearest Pepboys. Here the vehicle was serviced for nearly a month until the problem was fixed. The cost was almost $6500 GMC has failed to notify customers if this potential issue which not only risks the lives of the drivers and passengers of the 2013 Terrain but those driving alongside it. This is not a new issue as I found the testimonies of many other GMC owners tell a similar dangerous experience. Please help! I have detailed invoices of the repairs.

Filed Oct 30, 2022 · Engine, Fuel system · WI

I've been having same issues Occurring since I Signed my purchase agreement. The constant rattle at about 1500 RPM, The oil leaves At such a rapid rate That I have to monitor it every day As to make sure the level doesn't go too low. I've only had the vehicle since September 2022 and here it is Halloween 2022 and I'm down over $2000 maintenance costs and maintenance costs trying to prevent catastrophic failure with the engine that I know is coming! OBDII code reads P0171

Filed Oct 25, 2022 · Engine, Fuel system · MN

Vehicle burns excessive amounts of oil. I need to add oil almost every time I drive. This could result in catastrophic engine failure. GMC and Chevrolet know about this problem, but refuse to issue a recall for this engine.

Filed Aug 22, 2022 · Engine, Fuel system · 115,000 miles · MS

The contact owns a 2013 GMC Terrain. The contact stated that the dealer had previously performed an unknown repair for an exhaust leak; however, the failure recurred while starting the vehicle. The contact stated while driving at an undisclosed speed, a fuel odor was detected. The contact was concerned that her and her passenger had experienced carbon monoxide poisoning. The vehicle was taken to an independent mechanic who reset the fuel carbon sensor and replaced the fuel cap; however, the failure recurred. The manufacturer was not made aware of the failure. The failure mileage was approximately 115,000.

Filed May 7, 2022 · Fuel system, Steering · IN

Hello, I have spent a lot of money on this mobile car and even so, it continues to cause problems and the oil runs out too quickly.