NHTSA Complaint #11718425 — 2014 BUICK ENCLAVE

I own a 2014 Buick Enclave experienced two major safety‑related failures. First, while driving on the highway, the vehicle suddenly lost throttle response and triggered a check‑engine light with code P1682 (Ignition 1 Switch Circuit 2). After replacing the ignition relay in the under‑hood fuse box, the issue seemed resolved temporarily. A few weeks later, while stopped at a traffic light, the vehicle displayed “Traction Control Off,” followed by “Engine Power Reduced,” and began shaking violently. The engine warning light turned on, and the car became undrivable in traffic, creating a dangerous situation. A mechanic later confirmed no failure in the replaced ignition relay. The root cause may be a design flaw in the fuse box and its bottom wire‑harness connection, which is known to loosen because the two internal securing screws do not get tighten at all, its freely moving and not securing anything. This potential defect has reportedly affected multiple GM vehicles from 2013–2015, posing serious safety risks and potentially leading owners to spend significant money on repairs without resolving the underlying issue. In Buick Forum, thousands of customers experiencing the same issue, spending thousands and suffering financial implications and severe safety threat just for a careless design and carelessness in addressing a small design issue!!!