2013 GMC Terrain power train problems

“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…”

“The contact owns a 2013 GMC Terrain. The contact stated that while driving 40 MPH, the transmission failed to shift as needed. The contact stated that while driving at an undisclosed speed, the vehicle stopped and stalled. There were no warning lights illuminated. The vehicle was taken to the local dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired. The vehicle was taken to a transmission center, which determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and filed a claim. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 172,000.”

“The contact owns a 2013 GMC Terrain. The contact stated while driving 45 MPH, the vehicle lost motive power and stalled with the check the engine warning light illuminated. The contact was able to restart the vehicle and pulled over in a parking lot, where the vehicle again lost motive power and would not restart. The vehicle was towed to the dealer, and the dealer stated that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 143,083.”

“A loud popping noise was coming from the middle to back of vehicle. Upon inspection by independent repair shop a hole in side of transfer casing was found. No warning lamps came on to indicate any problem even after noise was heard. Once problem was determined it was felt that if vehicle had not been taken out of operation when it was and continued to be driven that a possibility could exist of the transfer case gearing becoming bound up and causing loss of control of vehicle due to various wheels possibly binding or maybe locking up. Transfer case has been replaced.The transfer case was disassembled and found to have intermediate shaft bearing (if I have identified it correctly) completely destroyed causing shaft to come out of alignment and all attached gears to mesh incorrectly causing gear damage. In reviewing this site it was noticed that this problem has occurred three to four times over the past few years to other vehicles as well. It would appear that there may be an issue with the bearing associated with the intermediate shaft on the side of the transfer case where the hole in the case is found and could possibly be associated with something in either…”

“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.”

“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.”