Engine & cooling

Buick Lacrosse Eassist Engine problems by year

40 complaints filed with NHTSA about the Buick Lacrosse Eassist's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Engine complaints by model year

2012 302013 2014 2015 2016

Year	Engine complaints	Crashes	Injuries
2016	4	0	0
2015	1	0	0
2014	4	1	1
2013	30	0	0
2012	1	0	0

Latest Lacrosse Eassist engine complaints

2012 Buick Lacrosse Eassist Transmission & drivetrain Electrical system Engine & cooling

13136 recall issued on [redacted] was visually inspected by [[redacted]] Chevrolet Pleasant Hill Iowa on 7/10/13. With the statement no further action required .Diagnostic inspection done by Thompson Buick Springfield [[redacted]] [redacted] the following codes flagged.B1517,P0606,P0700,P0AC4,P0BE6,P0BEE,P0C0B,U0140,U0293,U1817 The vehicle is owned by my wife's aunt a [[redacted]] widow the car is a critical Lifeline used by her niece to drive a 2.5 hour highway route from [[redacted]] to [[redacted]] where her...

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aunt resides in a nursing home. On a return trip to [[redacted]]. The vehicle experienced catastrophic shut down power windows failed , air conditioner quit functioning and a mile of home the car lost power steering. Because recall inspection was done one month after the recall roll out [redacted] and then recall inspection was done [redacted] was a visual inspection that did not replace the known to be ,a future failure point part. After the catastrophic shut down, we took the vehicle to Thompson Buick [[redacted]]. To have a diagnostic service done which showed Parts noted in the original recall had failed the dealership was unable to do anything because the recall showed no further action completed . Service manager contacted GM representative who stated GM declined the request because the vehicle is outside the age and mileage guidelines for repair assistance GM does not allow for assistance Beyond 7 years or 50,000 miles Beyond warranty and service date. I believe this is taken out of context and the recall should be reviewed because the inspection was not adequate to solve the initial problem noted in the recall. There have been several changes to this recall to facilitate a review. But they have refused to have any other statement. All check engine lights activated. This misinterpreted recall failure has put an elderly patient and her caregiver in possible fatal conditions as well as innocent drivers. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

2013 Buick Lacrosse Eassist Transmission & drivetrain Electrical system Engine & cooling

Well the belt tensioner and the hybrid motor Drive Motor Performance and Hybrid Power train Control Module Requested MIL Illumination Yes not just any mechanic can work on the car because of the hybrid system is to much voltage And the check engine light came on the car

2013 Buick Lacrosse Eassist Engine & cooling

The bolt that secures the Serpentine belt tensioner unit to the motor block has repeatedly snapped apart leaving the tensioner unit to dangle from the block. Not secured, which causes the belt to dislodge or break (both have happened) the spring is left to flail about as is the tensioner unit since it is no longer connected to the engine block. Not to say where the other half of the bolt could end up. So far each time it snaps in half the other half remains in the block. But the unit is no longer secured to the...

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block. While driving when this occurs makes controling the vehichle unsafe. It loses power and or surges at will. A hope to make it to the side of the road without crashing or causing a crash is an issue. I cannot afford a repair establishment, a family member does my repairs. ... There has been no other inspection of the issue. As for warning lights. No. Everything is fine until the unit is jiggled away from the block after the bolt snaps in half. The force of the tensioner unit action (im assuming) is too much for the bolt - causing it to snap in two. It has occurred 2 times the second was the beginning of Feb 2025 and the first about 9 to 10 months earlier in 2024. The belt has also broken off before but the unit remained attatched to the block that time. I did see on youtube that others have had the bolt snap. Like it is not strong enough for the job it has to perform. Hope u can help

2016 Buick Lacrosse Eassist Engine & cooling

Diagnostic trouble code P0442. Evaporative emission system leak detected indicated by check engine light on.

2016 Buick Lacrosse Eassist Steering Engine & cooling

The contact owns a 2016 Buick LaCrosse. The contact stated while driving 35 MPH, the vehicle lost power steering functionality. The check engine warning light was illuminated. The contact was able to drive to the residence. The vehicle was towed to the dealer, where the failure was diagnosed as a glitch, and the Power steering control module (PSCM) software update was performed; however, the failure recurred. The dealer was contacted and advised the contact that the electric power steering assembly needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 106,000.

2013 Buick Lacrosse Eassist Electrical system Engine & cooling Fuel system

The "auto stop" on my car, when I was at stoplights or stop signs, would not automatically restart. The engine failed to start again when stopped in "idle"..

2013 Buick Lacrosse Eassist Electrical system Engine & cooling

Stalls when going up hill or if I stop at stop light and then try to proceed it jerk and go fast and also the display goes out and restart

2013 Buick Lacrosse Eassist Engine & cooling

The contact's wife owns a 2013 Buick LaCrosse. The contact stated that on several occasions while the brake pedal was depressed, the vehicle lunged forward and the engine stalled; however, after releasing the brake pedal, the vehicle went into LIMP Mode and then lunged forward. The contact stated that the engine engaged at low speeds. Additionally, the contact stated that there was an abnormal grinding sound coming from the vehicle. The oil warning light was illuminated. The vehicle was taken to the dealer where...

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the cause of the failure could not be determined. The vehicle was taken to a different dealer where it was diagnosed that the main drive belt and valve cover gasket needed to be replaced. The vehicle was then taken to an independent mechanic where it was diagnosed that the valve cover needed to be tightened but the cause of the failure could not be determined. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 83,907.

2013 Buick Lacrosse Eassist Electrical system Engine & cooling

The contact owns a 2013 Buick LaCrosse. The contact stated while driving at various speeds, the vehicle started jerking. There were no warning lights illuminated. The contact continued to drive the vehicle. Additionally, the contact stated that the vehicle failed to start. The contact was unable to restart the vehicle after several attempts. The vehicle was towed to the local dealer where it was diagnosed that there were no compressions on the engine and cylinders due to a possible fractured timing chain and...

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damaged valves. The dealer also informed the contact there was no oil in the engine; however, the contact had replaced the engine oil 2-3 weeks prior to the failure. The vehicle was not repaired. The vehicle was then towed to an independent mechanic but was not diagnosed or repaired. The contact referenced NHTSA Campaign Number: 13V173000 (Electrical system). The manufacturer was not notified of the failure. The failure mileage was approximately 88,000.

2013 Buick Lacrosse Eassist Electrical system Engine & cooling

The contact owns a 2013 Buick Lacrosse. The contact stated that after reversing out of the garage and parking in the driveway, turning the vehicle off and removing the ignition key however, approximately 30 minutes later the vehicle started independently. The ignition key had to be used to turn the engine off. The cause of the failure was not determined. The manufacturer was notified of the failure. The local dealer was not yet contacted. The contact indicated that the failure posed a severe carbon monoxide hazard. The failure mileage was 63,000.

2013 Buick Lacrosse Eassist Suspension Engine & cooling

The contact owns a 2013 Buick Lacrosse. The contact received notification of NHTSA Campaign Number: 20V764000 (Suspension) however, the part to do the recall repair was unavailable. The local dealer was contacted and confirmed that parts were not yet available. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was notified however, no further assistance was provided. The contact had not experienced a failure. Parts distribution disconnect.

2013 Buick Lacrosse Eassist Brakes Engine & cooling

The contact owns a 2013 Buick Lacrosse. The contact stated while driving 60 MPH, the brake pedal was depressed, and she heard an abnormal sound coming from the vehicle. The check engine warning light illuminated. The contact continued to drive to her destination. The vehicle was taken to the dealer who diagnosed that the generator control module had failed and needed to be replaced. The contact stated that the failure had been reoccurring while driving. The manufacturer was not notified of the failure. The vehicle was not repaired. The approximate failure mileage was 150,000.

2013 Buick Lacrosse Eassist Engine & cooling

There is a known issue with this model as well as other 2.4 Litre gm engines where the pcv valve may become clogged and if it is not fixed it can cause the rear oil seal to be damaged, hence rendering the engine useless. There is a special coverage bulletin that cover this vehicle and others under certain vin numbers. However my vehicle had the same issue and is over $1`,000 to diagnose and fix. After talking to buick, even though I am within coverage dates and well below the mileage, my vehicle does not qualify...

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for repair and I must pay for it out of pocket, despite it being a known issue in other vehicles. This should be moved from a special coverage to a recall for any affected vehicles under the 10 year, 120,000 mile threshold.

2013 Buick Lacrosse Eassist Electrical system Brakes Engine & cooling

Constantly been having engine problems. Engine light coming on and off. I was driving it down a highway, coming to a stop due to a red light when the whole front of my car begin to sputter and gave out. It read "stabiltrak" but when taken to the shop it only read a code for the carbon filter. Which, was changed and did fixed the problem for the time being. However, its doing the same thing again.. Which is very dissapointing because its a very well kept up with car, never goes without its necessities.. And at this...

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point I'm thinking it could be my braking system due to this problem weakening my brakes but I don't see why because those were changed about 6 months ago. Maybe, even an electrical problem with my traction control.

2015 Buick Lacrosse Eassist Electrical system Engine & cooling

Would not start at all, once we got it started and headed down the road, the car shut off while driving. Very dangerous.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data