Buick Lucerne loss of power problems

Filed Apr 21, 2026 · Electrical · GA

Vehicle purchased used through Carvana. Battery installed at purchase was approximately 10 years old and later failed, causing starting issues and an instance of power loss while driving that left the vehicle stranded. Battery has been replaced and original battery retained.

Filed Jun 6, 2024 · Electrical · 78,000 miles · TN

The contact owns a 2008 Buick Lucerne. The contact stated that immediately after his wife had started the vehicle, the vehicle inadvertently lost power and was unable to be restarted. After a visual inspection of the battery compartment, the contact observed that the fuse relay showed signs of an electrical fire. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 78,000. The VIN was not available.

Filed Feb 9, 2024 · Engine · 61,798 miles · MN

The contact owns a 2010 Buick Lucerne. The contact stated while driving 75 MPH, the vehicle went into LIMP Mode and the engine shut off inadvertently. The contact was able to veer to the side of the road. The vehicle restarted independently after 10-15 minutes. The messages "Reduced Engine Power", "Starting Disabled", "Service Throttle", "Service Stabili-trak Soon" were displayed, and other unknown warning lights were illuminated. The contact was able to continue driving; however, the vehicle failed to exceed 20-30 MPH. The vehicle was taken to the dealer on two occasions, and the dealer retrieved diagnostic test codes: P2138 and P2122. The dealer replaced the throttle body and the accelerator pedal; however, the failure persisted. The contact stated that the failure mainly recurred while making left turns. The manufacturer was notified of the failure and informed the contact that they could only assist after the vehicle had been taken to the dealer. The dealer was contacted and informed the contact that the failure had to happen while driving in the presence of a mechanic, then the vehicle could be diagnosed. The vehicle was not diagnosed or repaired. The failure mileage was approximately 61,798.

Filed Oct 10, 2023 · Fuel system · NE

Bought my car Sept. 2022.Within the first couple of months I started having intermittent problems that seemed fuel related.After some research I found out my car had a TSB that has been out since 2016. With this knowledge I took the back seat out of my car and the problems all stopped.June of 2023 started having some problems that were sort of similar to what I was experiencing before with some power loss, had vehicle taken to mechanic who diagnosed an interlock system problem.I thought maybe that would fix all my problems and put my back seat back. I travel 4 hours once a month to go see my son and only took my car once on that trip because of not being able to have a back seat.Me thinking the interlock fix was the solve all to my problems I put the back seat in and started my drive to go see my son. 3 hours in stop for gas, try to start my car, cranks won’t start, not getting fuel. Called mechanic who just worked on my car, suggested to check my fuel pump fuse and fuel relay, find my fuel relay is melted. Replace fuel relay and pulled the back seat out, car fires right up no problems. Continue hour drive to see my son, picked up my son so had to put the back seat in. Drive about 7 blocks and stop at Walmart, try to start car and same problems as before. Replace Fuel relay, propped up the back seat around the fuse box trying to still make it safe enough for my son to ride back there, no more problems that trip, propped seat left leaning in the back. August-Was driving down the Highway at 65mph with the cruise on, when all of a sudden my car begins to lose power and proceeds to stall with no warning. Lost complete control of steering and had minimal control breaking, had to coast to a stop with no breaks or steering, lucky was on a straight rural hwy, can’t imagine if I was in the city. Seat had fallen up against fuse box fried fuel relay again and the control module. Take to shop for repair, control module, fuel pump replaced NSB complete all at my expense.

Filed Dec 13, 2022 · Fuel system · GA

The fuel pump relay keeps getting hot and burning, causing the car to not start or loosing power while driving. Lost power going up a hill and around curve with no place to pull over. Could have been hit when car died in blind spot in road. Looked it up and other people on line are saying it is the seat clips hitting fuse box causing short circuit in fuse box and damaging fuse box. People said they thought it was fuel pump but still had same problem after replacing fuel pump. A lot of upset people on line saying there should have already been recall on this problem. Have had 2 mechanics look at it. Have bought 3 relays. Afraid to drive car if it will start, fear of loosing power in middle of road and getting killed. Not to mention could cause fire since fuse box and battery are under back seat.. Genius engineer, I'll tell you! Don't know if I can ever completely trust this buick again. Never had anything like this happen to any car I've ever owned.Something needs to be done. Recall Recall Recall !!!!!!!!!!!!!!

Filed Aug 27, 2020 · Electrical · 149,000 miles · IN · fire

Tl* the contact owns a 2009 buick lucerne. The contact stated that while driving at approximately 75 MPH, the vehicle loss power as a smoke odor was detected in the cabin of the vehicle. The contact exited the highway and went to a local auto store. While parked, he inspected the vehicle, opening the rear passenger door and found that the plastic burning odor was coming from the underneath the seat. The contact lifted the rear seat and discovered that the fuse box was extremely hot to touch. Upon opening the box smoke and a burnt fuse relay was seen. The contact stated that he purchased and replaced the burnt fuse. The contact drove the vehicle to his residence, where it was later towed from to the dealer thomas chevrolet-buick inc. (2128 s byron butler pkwy, perry, fl 32348) who informed the contact that no recall were under the VIN. The vehicle was not repaired. The failure recurred. The vehicle was taken back to the dealer where it was diagnosed and determined that the fuel relay kit needed to be replaced. That contact mentioned manufacturer communication number: 15-na051 (electrical system, seats, fuels system, gasoline) (the federal safety agency id number: 10108617) as a possible solution to the failure. The manufacturer was made aware of the failure, a case was opened and the contact was instructed to take the vehicle to the dealer for repairs. The failure mileage was approximately 149,000.

Filed Aug 8, 2020 · Steering · 80,000 miles · OH

While backing the vehicle out of my driveway, it lost all power steering and the fluid gushed from under the car. Now the there is no power steering.

Filed Aug 16, 2019 · Electrical · 164,000 miles · AR

Rear seat makes contact with top of fuse block cover causing it to push aginst fuel pump relay causing it to overheat and burn out. This relay gets heated to the point that it could present a fire hazard. Due to the heat it generates, it melts the fuse block causing it to have to be replaced. Back seat cannot support weight of an average size person. This problem causes the vehicle to shut down and lose power rendering lose of power steering and power brakes. It is unreprehensible that gm is not made to correct this blatant mistake. This has happened 4 times and the block has been replaced by authorized buic dealer.

Filed Oct 26, 2018 · Engine · 43,120 miles · NJ

Vehicle stalled out on a highway (and at highway speed) and would not restart. Obviously this created a very dangerous condition for me and those around me as I tried to coast over to the shoulder (esp with loss of power steering and brakes). The problem came without any warning, and was determined to have been isolated to the ignition control module. Mileage on the car is only 43k

Filed Aug 16, 2018 · Electrical, Fuel system · IL

Fuel pump relay heated up and burned up fuse block witch is located under rear seat.fire hazard. Sits above gas tank. Car will not start or will lose power while driving.lost steering and brakes. There has been numerous complaints about this. Also ignition switch not working.