Buick Lacrosse fuel pump problems

Filed Feb 26, 2026 · Electrical, Fuel system · 99,000 miles · FL

The contact owns a 2016 Buick Lacrosse. The contact stated that the fuel pump was previously replaced due to the vehicle stalling while driving. The contact stated that the tailgate unintendedly opened while the vehicle was parked and turned off. Additionally, the vehicle jerked while driving from a complete stop, and the vehicle hesitated and shuddered while driving at various speeds. An unknown warning light was illuminated. OnStar was contacted and informed the contact that a DTC for the ABS was found. The vehicle was taken to an independent mechanic, where it was repaired for ABS failure; however, the failure persisted. There was no warning light illuminated. The vehicle was taken to an independent mechanic, where it was test-driven. The mechanic diagnosed the vehicle and determined that the transmission had failed and needed to be replaced. The contact stated that the transmission was previously replaced twice due to the failure. The mechanic advised the contact to get rid of the vehicle. The vehicle was not yet repaired. The dealer and the manufacturer were not notified of the failures. The failure mileage was approximately 99,000.

Filed Feb 2, 2022 · Engine, Fuel system · OH · crash

Car been smelling like gas for awhile engine light pop on and off. My car will not start I have replace the fuel pump car still won’t get gas . Replaced battery numerous of times battery keep won’t stay charge . I have a recall on my car I believe the suspension is under recall as well. I also had to replace my windshield wiper motor a few times slapped against my windshield and cracked windshield.

Filed Dec 10, 2019 · Fuel system · 114,000 miles · NY

I have an 2010 buick lacrosse cxl I've had for 8years within those years I've replaced the catalytic converter 2x which is pretty pricey considering theirs 3parts. This recent time it was replaced there was gas in the oil. My mechanic states it because of the high pressure fuel pump. Which I feel should be replaced by buick there's no way I should be changing a converter this often.

Filed Aug 9, 2019 · Acceleration, Engine · 30,000 miles · TX

Tl* the contact owns a 2016 buick lacrosse. While the vehicle was in reverse, the contact attempted to shift into drive, but the vehicle failed to move forward. In addition, while accelerating from a stop, the vehicle failed to move forward. All the warning indicators illuminated on the instrument panel, including the check engine wrench, traction control, and stabilitrak. In addition, the speedometer and temperature indicators would go to zero. Also, when driving 50 MPH, the rpms would go up and down. The contact stated that the vehicle was taken to texan gmc buick (18225 eastex fwy, humble, tx 77338, (281) 973-3117) six times where it was diagnosed that multiple failure codes were found and there was a loss of communication. The dealer performed a calibration and cleared all the codes. The vehicle was test driven and all the gauges were at zero. The following failure codes were found: u0100-u2099-u0140-u0120 (stored in trans, bcm, park brake, fuel pump control module, engine control module failing intermittently, replace engine control module assembly, performed programming and mobilizer learn and setup procedures, clear fault, and road test). The failure recurred and the vehicle was taken back to the dealer. The manufacturer was notified of the failures and provided case number: [xxx]. The approximate failure mileage was 30,000. Parts of this document have been redacted to protect personally identifiable information pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed Dec 14, 2018 · Electrical, Fuel system · 134,000 miles · MN

Was driving down road got to my destination parked it and when I came out it would not start found a burnt fuel pump relay changed it and drove it home. 20 min later I drove it again and made it 2 miles same thing happened to relay only when I was driving it.

Filed Dec 14, 2016 · Engine, Fuel system · 29,750 miles · PR

My vehicle a 2011 buick lacrosse cxl 2.4l engine rpo laf. I have a problem with the engine making noise due to balance shaft chain special coverage recall 12313 where back then they included in the recall the balance shaft chain, tensioner, and also the engine mount high pressure fuel pump, then to say this bulletin has been revised to remove special coverage adjustment for the fuel pump that is now included in voluntary emissions recall 43180. Updates have been made to the part information, service procedure, and warranty transaction information sections. Please discard all copies of bulletin 12313b. Came the revised 12313b and now as of september 2016 revised again to 12313c. When you look at the 43180 it does not include the 2011 buick lacrosse with the same engine rpo laf. I've called gm various times and spoke even to the gm dealer, my car was even at the dealer sitting there for weeks to only say it's not covered that I have to wait for it to get recalled. My vehicle has the same exact symptoms, the oil smells like gas, and I can't shut off the vehicle, it stays running and the only way to shut it off is putting it on drive then shutting it off. All this due to on some 2010-2011 model year buick lacrosse, chevrolet equinox, and gmc terrain; and 2011 model year buick regal vehicles, equipped with a 2.4l engine (laf), the chrome layer on the balance chain pins may wear, allowing the chain to stretch. This would cause an engine noise, and if left untreated, could cause the chain to break, leading to engine damage. This is causing the engine to not run right and a hard time to accelerate gm case # 8-2573359821

Filed Nov 1, 2016 · Engine · 60,000 miles · LA

2011 buick lacrosse (60,000 miles - properly maintained by 73 year old man) broke down on interstate hwy. While vacationing in knoxville, tn - buick begins to stall and the engine light came on (was flickering and no acceleration). We stopped immediately at a gas station and called aaa - who towed us to a certified aaa repair/tow company. We initially suspected it would be the fuel pump or filter . Mechanic in knoxville who is a ase certified mechanic for 40 years said it wasn't the fuel pump so he put his diagnostic tester and determined there were more problems and started to take apart the engine....and found the main valves were broken and fell into the pistons. Engine failure and he said in his 40 years this had happened only 3 times but not on a 2011 car with only 60,000 miles. He said if we would have continued driving, the whole engine would have blown up. Called the local buick dealership and found out no recall, nor did we have the extended warranty (a big mistake - and we loved the lacrosse thinking it would last a long time). Looked up blue book value - worth $11,000 (with running engine) and a new engine would be approx. $8,000 and would take a week to replace. Sold the car to the mechanic in knoxville, tn) and purchased a new toyota avalon in knoxville. Very very disappointed in g.m.

Filed Sep 15, 2015 · Driver assistance, Electrical · 46,000 miles · IN

Tl* the contact owns a 2007 buick lacrosse. While driving various speeds, the vehicle stalled and all of the warning lights illuminated. The vehicle was taken to the dealer. The technician diagnosed that the fuel pump needed to be replaced. The vehicle was repaired; however, the failure recurred. After taking it back to the dealer, the computer and traction control were replaced, but the failure persisted. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 46,000.

Filed Feb 11, 2015 · Electrical · 55,700 miles · CO

I turned the key in the ignition to start the car. Immediately, a very large roar ( like an airplane) occurred just as the engine started. I turned off the ignition fearful of damage to the engine, not knowing what might happen. It would not restart. It was towed to the dealership to have it repaired. The ignition coil had ruptured, ignition module was knocked out. The cost for repair: $800+. Two weeks later, the engine light lit up on the dash board display. I returned to the dealership for investigation. The second repair diagnosis repair required the replacement of the fuel pump, the oil pressure sender pump and the air injector pump ( no charge for this). Cost: $1004.81. When I tried to drive it home, the engine light lit up again so I returned to the dealership. This time there was a need to replace a emission valve.( no charge). Five days later, the engine light lit up again. Diagnosis: code po411, air injector pump malfunction. Will schedule repair next week ( february 14-21) this ignition coil malfunction caused electrical failures to electronic module, the fuel pump, the air injector pump, the oil pressure pump and the emission valve so far, at great cost to the consumer. More importantly, the fear is that the ignition coil rupture and resulting failure could have caused an engine fire. The sound was deafening and felt like an explosion. I have never experienced this kind of problem with any other of my automobiles. It was a frightening experience.

Filed Oct 20, 2010 · Fuel system · 35,000 miles · NJ

07 buick lacrosse with 35k miles failed 5times and could have been rear ended. Failed 4/10 fl,fuel pump corrected failed jersey 4 times towed to dealer twice who did nothing but tightend wire very ill wife made a new car necessary.