There are 6 stored owner reports matching the powertrain & transmission leading-label group for the 2016 Buick LaCrosse in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 6 of 6 matching reports.
Open the full vehicle complaint log (all categories)Cars shudders 20-30 MPH. Started last year, I needed to get my wife for cancer treatments. Basically, shifted the car manually.
control module,left and right rear wheel speed sensors
The contact owns a 2016 Buick Lacrosse. The contact stated that when she started her vehicle, the automatic collision unavailable, and oil leak warning message illuminated. The contact stated the warning lights were then unilluminated. The contact stated that the following day while the vehicle was parked and turned on, the power steering warning light illuminated and the steering wheel seized. The contact stated she called a tow truck to tow the vehicle to the local dealer and while she waited she was able to steer the steering wheel; however, she did not feel safe driving the vehicle and it was then towed to a local dealer. The dealer informed the contact that the diagnosis was that the vehicle needed to update the power control module(PCM) software. The vehicle was repaired. The manufacturer was made aware of the failure and informed the contact the failure was not covered under the warranty. The failure mileage was 92,968.
When braking from 50 mph or 40 mph coming to a stop my car jerks and it’s very hard to stop it uncomfortable hesitation, Jerk, or lurch. Almost caused accident twice where I couldn’t stop the vehicle this is very unsafe for me and my family also transmission downshifts and up shifts are really hard in this vehicle
AT 25 - 30 MPH AND AT 45 - 50 MPH THE CAR SHAKES VIOLENTLY. I TOOK IT TO THE DEALERSHIP FOR A DIAGNOSTIC. THEY SAID THEY KNEW EXACTLY WHAT IT WAS. I NEED A NEW LOWER AND UPPER TRANSMISSION. THAT IS THE RECOMMENDED FIX. THAT IS SOMETHING THAT HAPPENS TO CHEVY TRANSMISSIONS AND THE COST IS $5400. IT SEEMS TO ME THAT IF THIS IS SOMETHING THAT GOES WRONG ALL THE TIME, THAT'S A PROBLEM THAT I DID NOT CREATE. MY VEHICLE IS WORTH LESS THAN THE COST OF THE FIX AND I STILL OWE MORE THAN TWICE THE COST OF THE FIX.
WHILE DRIVING AT HIGHWAY SPEEDS (65+ MPH) THE INFORMATION CENTER WILL DISPLAY 'REDUCED ENGINE POWER' AND CAR WILL DOWN SHIFT AND ONLY REACH 45 MPH. CAUSING CLOSE TO REAR-END CRASH. YOU HAVE TO LEAVE THE HIGHWAY TRAFFIC IMMEDIATELY AND TURN OFF ENGINE. RE-START ENGINE AND CONTINUE DRIVING. IT HAS HAPPENED TWICE NOW. SEEMS LIKE A SOFTWARE PROBLEM. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.