There are 3 stored owner reports matching the powertrain & transmission leading-label group for the 2009 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 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)WHILE ENTERING INTERSTATE OFF RAMP I STARTED SLOWING DOWN AND VEHICLE ACCELERATED TO A VERY HIGH SPEED. WITH EXTREME BRAKE PEDAL PRESSURE WAS NOT ABLE TO SLOW VEHICLE DOWN FOR APPROXIMATELY 100 YARDS. I HAD TO CHANGE 3 LANES TO AVOID COLLIONS WITH VEHICLES IN FRONT.
TL* THE CONTACT OWNS A 2009 BUICK LACROSSE. WHILE THE VEHICLE WAS PARKED AND POWERED ON, THE GEAR SHIFT INADVERTENTLY SHIFTED TO REVERSE AND ROLLED BACKWARDS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 26,466.
TL* THE CONTACT OWNS A 2009 BUICK LACROSSE. THE CONTACT STATED THAT IT WAS DIFFICULT TO SHIFT THE VEHICLE FROM PARK INTO REVERSE. THE GEAR SHIFTER RESPONDED AS IF IT WOULD BREAK WHEN ATTEMPTING TO SHIFT GEARS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS UNAVAILABLE.
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.