Five problems related to power train have been reported for the 2017 Buick Lacrosse. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2017 Buick Lacrosse based on all problems reported for the 2017 Lacrosse.
My 2017 Buick Lacrosse premium awd (116,220 miles) experienced a severe all-wheel-drive failure causing significant binding and a loud rumbling/clunking noise during sharp, low-speed cornering and acceleration. The vehicle has been officially inspected by two separate authorized manufacturer service centers. On September 25, 2026, a certified gm technician at advantage Buick GMC formally documented that the vehicle has a prominent rear drivetrain failure, identifying it as a "rear diff or driveshaft issue" that requires full component replacement. Prior to the complete mechanical failure, no warning lights or dashboard indicators illuminated. The binding symptoms appeared suddenly during normal city driving maneuvers. This drivetrain failure directly aligns with documented corporate engineering safety campaigns, specifically customer satisfaction program #16069 (propeller shaft/driveshaft c-clip disengagement defect) and TSB #18-na-049 (catastrophic twin-clutch carrier assembly failure). The failure of this component poses a severe, immediate driving hazard as a sudden disengagement of the driveshaft or differential lockup at road speeds can result in a catastrophic loss of vehicle control. General motors has ghosted my corporate case (#113840289) and refused to remedy this manufacturing vulnerability.
Car has 4 trips on rollback and one driving in for transmission problems 3 trips was when coming to a stop the car will will slide to stop almost making us hit dash of car each time there would be a warning about a minute before service transmission . One of the trip for transmission service light I did drive it in. The car went in yesterday for transmission service again. My thinking of this is what would happen if I were driving 70 mph and the car locked up what would happen to me and the people around me.
Tl- the contact owns a 2017 Buick Lacrosse. The contact stated while driving about 35 mph the vehicle stalled. The vehicle was taken to flow companies of fayetteville (1945 skibo rd. Fayetteville , nc 28314) were the vehicle was not repaired. The approximate failure mileage was 1345. Bh.
I have no idea whether this concerns the takata inflators or not. While accelerating from a normal traffic speed (approximately 20 to 40mph) , it seems like the transmission shifts up and down rapidly several times between lower gears. If the acceleration is terminated by by lifting your foot from the accelerator, the shifting goes away. After that, a soft pressure on the accelerator will allow the vehicle to accelerate without further unwanted shifting. This is a reoccurring problem.
2017 Buick Lacrosse. Consumer writes in regards to issues with transmission. The consumer stated when accelerating from a stop, the vehicle intermittently seemed to stick or downshift into low gear. The vehicle was restarted and appeared to be normal. The dealer could not duplicate the failure.