2009 Buick Lucerne: engine overheating

8 of the 128 complaints about the 2009 Buick Lucerne describe engine overheating.

owner complaints: 8
of this car's complaints: 6%
typical mileage: 80,000
recalls: 0

Is there a fix? 110 service bulletins cover this area of the car. See below

Engine overheating by model year

2011
5
2010
3
2009
8
2008
16
2007
1
2006
2

What owners say

Filed Nov 1, 2024 · Electrical · 66,000 miles · CA

The contact owns a 2009 Buick Lucerne. The contact stated that while attempting to start the vehicle, the engine failed to turn over. No warning light was illuminated. The contact stated that upon inspection he became aware that one of the relays from the electric fuel pump under the rear passenger’s seat needed to be replaced. The contact stated that the fuel pump relay prong base had melted due to overheating. In addition, the contact stated that the fuse was a 10.01 AMP instead of a 5 AMP which could have caused the failure. The local dealer was not contacted. The vehicle was repaired; however, the failure reoccurred 2 days later. The manufacturer was made not aware of the failure. The failure mileage was approximately 66,000.

Filed Mar 6, 2023 · Acceleration, Electrical · 170,000 miles · AZ

The contact owns a 2009 Buick Lucerne. The contact stated that while driving approximately 70 MPH, the fuel pump relay overheated and burned the fuse box. The accelerator pedal and steering wheel became inoperable. The contact was able to control the vehicle and park the vehicle. There were no warning lights illuminated. The contact replaced the relay, but the vehicle failed to start. The contact called the local dealer and was advised to schedule an appointment for diagnostic testing. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 170,000.

Filed Feb 17, 2021 · Electrical · 80,000 miles · OR · fire

Tl* the contact owns a 2009 buick lucerne. The contact stated that whenever they would start the vehicle, the vehicle would start then suddenly shut-off. The contact stated that they took the to be inspected and noticed that the relay to the fuel pump had overheated and had started to melt. The contact replaced the relay however, the failure persisted. The contact had not taken the vehicle to the dealer. The vehicle was not diagnosed. The manufacturer was not made aware of the failure. The approximate failure mileage was 80,000.

Filed Apr 19, 2019 · Electrical · 82,500 miles · VA

Rec- battery drain no start condition or a stall may melt or overheat. I reveived letter on 1/2019 however experienced this issue in july 2018 had to have car towed mechanic rep;aced bettery. Tk to dealership they experienced the same and draining battery. Sent invoice to buick for reimbursement of battery that was still in warranty and towing refused to reimburse this should be a recall several complaints and a safety issue. Vehicle was stationary in parking lot could have been worse

Filed Dec 31, 2015 · Electrical, Fuel system · 60,000 miles · OK

Vehicle was stationary in driveway. Vehicle would not start. It had worked fine the day prior. The vehicle was cranking and clearly had power but would not turn over. I noticed that I could not hear the fuel pump prime when the key was turned. Like many others, I found the fuel pump relay to be charred like it had been burning. The fuse block was also melted at pin 30. This is such a fire hazard being under the back seat, dealing with the fuel pump, and overheating like it does. It seems to be a commonly reported problem and I cannot believe there has not been a recall. Currently waiting on parts to replace the melted fuse block and the relay.

Filed Nov 5, 2015 · Electrical, Fuel system · 91,156 miles · MO

Vehicle would not start in the garage. Had it towed to a local garage where the diagnosis was failed fuel pump relay. Fuel pump relay overheated and melted the fuse block. The 20 amp fuse for the fuel pump relay did not fail. A visual inspection of the relay shows an internal burn mark between pins 85 & 86. Since this block is under the rear seat, on which my grandchildren our strapped in I am concerned about the chances of fire. As far as I can tell their is no recall, but a quick search of the internet indicates an ongoing problem.

Filed Oct 28, 2015 · Electrical · 60,000 miles · IN

The fuel pump relay overheated and melted in the fuse box. I smelled the burning in the car. I had to have the fuel pump, relay and fuse box replaced. The mechanic told me that the fuse box could have started a fire and he has never seen this happen, let alone in a vehicle with such low mileage. He told me to google the problem with my car because hundreds of other car owners have had the same problem. Sure enough I did just that and I saw hundreds of people with the same complaint about this model car. Gm needs to be held accountable. Are they waiting until somebody dies first before they acknowledge the problem of the fuel pump relay and the fuse box?

Filed Oct 26, 2015 · Electrical, Fuel system · 80,000 miles · MI

My 2009 buick lucerne that I use in my daily commute to work did not give me any issues until that friday,10/23/2015. I tried to start my vehicle that morning and it seem as if it was not getting any fuel. Had the vehicle tolled after contacting my extended warranty company. Monday I received a call from the dealership that the problem was diagnosis as the fuel pump relay has not only overheated but has melted the fuse box. My concerns are that this could have occurred while I was driving, also this seems to be a known but not publicized issue by both the manufacturer and the insurance company. Too many identical incidents have occurred and has been reported, yet no one has received any reported action to correct this dangerous problem. It does not take a mechanical expert to know that a device that can cause fire to something associated with the fuel system is a matter of great concern. Hopefully this problem will be taken seriously before something fatal happens.