2009 Buick Lucerne fuel system problems

Filed Apr 7, 2026 · Fuel system · 70,000 miles · NY

The contact owns a 2009 Buick Lucerne. The contact stated that while driving approximately 65 MPH, the vehicle suddenly stalled. The contact was able to safely drive onto the shoulder, and the tow truck was contacted. The vehicle was later towed to the local mechanic, who diagnosed that the fuel relay had failed. The contact was informed that the relay had failed due to the location under the driver’s side rear seat, and while touching the motor terminal. The contact stated that there was a TSB associated with the failure. The vehicle was not yet repaired. The manufacturer and local dealer were contacted. The failure mileage was 70,000.

Filed Aug 1, 2024 · Electrical, Fuel system · SC

The car died suddenly and would not start, with no warnings or codes. Towed it to a Midas repair shop and it was diagnosed as a corroded Low Profile Fuel Pump relay. This was replaced, and the car ran fine for 3 days before going dead in the middle of driving and left me stranded in an intersection. Had to get it towed back to Midas where it was more accurately diagnosed that the issue with the relay was being caused by a faulty Rear Electrical Center. Both of these parts have been recalled, and I have only owned this car for a little over a year. It has only around 40,000 miles on it. Despite this recall, upon taking the car to the local Buick dealership, they stated they could not cover the recall due to it being expired before I even owned the car. I do not understand how it is right or fair for this to have to be paid out of pocket, for $183.53 and $818.81 respectively, when it is not my fault, it is a faulty GM parts issue, and GM stated they will not stand behind their product and cover the recall despite the evident risk to my safety if I was to continue driving the car without repair. I understand it is expired, but I fail to see how this is ethical when the part is still faulty to the point of being dangerous.

Filed Jan 22, 2024 · Electrical, Fuel system · MN

Fuel Pump relay fuse is getting burnt up and not allowing car to start. This is a known problem and the federal safety agency has already made a recall but mine isn’t recalled. You would think since mine is a 2008-2011 Buick Lucerne it would be able to get fixed. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 27, 2023 · Fuel system · 41,000 miles · OR

The contact owns a 2009 Buick Lucerne. The contact stated while attempting to start the vehicle, the vehicle would not start. The vehicle was towed to the dealer and the fuel pump was replaced; however, the failure persisted. The fuel module was replaced by the contact but the failure reoccurred. While driving 55 MPH, the vehicle lost motive power. The contact pulled over on the side of the road and had the vehicle towed. The vehicle was not repaired. The manufacturer was contacted and stated there was no recall on the VIN for the failure. No additional assistance was provided. The failure mileage was 41,000.

Filed Jul 14, 2023 · Electrical, Fuel system · 140,000 miles · AL

The contact owns a 2009 Buick Lucerne. The contact stated that while starting the vehicle, the vehicle sputtered and failed to start. There was no warning light illuminated. The vehicle was taken to an independent mechanic who recommended that the fuel pump relay be replaced. The mechanic became aware that the fuse was melted. The vehicle was repaired but the failure persisted. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 140,000.

Filed Feb 15, 2023 · Electrical, Fuel system · KS

The fuse box or fuse holder under the back seat had the fuel pump relay fail due to pressure on the fuse box lid from the seat above it. This is a known issue by Buick as they keep the fuse box in stock (for about $300) I have owned two similar Lucernes with this issue. The fuel pump relay caused enough heat to melt into the fuse box, causing a disconnection. This caused the fuel pump to stop pumping, causing the car to stop running. The problem can be confirmed by calling any Buick dealer. I'm sure they have had several examples of this issue besides my pair. There are many examples mentioned on the internet, as well as videos as to how to fix it. There are no warning lamps prior to the failure. The engine dies and refuses to restart.

Filed Jul 27, 2022 · Fuel system · 71,000 miles · TN

The contact owns a 2009 Buick Lucerne. The contact stated while parked, the vehicle was not able to be started. There was no warning light illuminated. The vehicle was towed to the dealer. The dealer diagnosed a failure with the fuse box. Additionally, the fuel pump relay was melted. The vehicle was currently being repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 71,000. The VIN was not available.

Filed Jan 24, 2022 · Electrical, Fuel system · IL

Fuel pump relay under vehicles back seat fried out due to the back seat hitting the fuse box cover and grounding out the fuel pump relay. My child was in the back seat and said there was smoke coming from the back seat and the fuse box nearly caught on fire. After reading online I am appalled that this has not been recalled yet. There was 0 warning, no lights on dash, I did not file a police report or do anything with my insurance as there was no accident. Just a car bomb manufactured by GM

Filed May 28, 2021 · Electrical, Fuel system · 79,000 miles · PA

The contact owns a 2009 Buick Lucerne. The contact stated that on multiple occasions the vehicle would not immediately start-up. The vehicle was examined by an independent mechanic who diagnosed that the fuel pump relay was faulty and needed to be replaced. After replacing the fuel pump relay the failure was temporarily fixed before it recurring. The manufacturer was notified of the failure. The local dealer was not contacted. The failure mileage was 79,000.

Filed Jul 12, 2019 · Electrical, Fuel system · NC

After being driven normally all day, the car all of a sudden wouldn't crank properly after being parked for a few hours. The car needed to be towed to a car shop. According to a local mechanic, the back seat pressed on the wiring that, in turn, burned up the electric panel and the fuel pump. Due to this, the electric panel and the fuel pump need to be replaced.