There are 2 stored owner reports matching the powertrain & transmission leading-label group for the 2017 Buick Regal 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 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)Vacuum Pump blew up forcing cam shaft sensor to blew out of engine and caused my brakes to fail. This happened at a stop sign. I proceed through the stop in front of a semi-tractor. Fortunately it was in front of the police station in(30mph) town zone and he was able to brake before killing me. My vehicle stopped before going through the front door of an auto shop, My Timing Cam is damaged and Shepherds is quoting $2600 to replace, plus an additional $800 already spent in replacing the vacuum pump. I’ve driven the car an additional 6 months with the cam sensor detached but the vehicle stalls when I slow or stop. This has caused additional hazardous situations. Person(s) will die if this defect is not addressed, it’s probably already happened. I have over 25 years in Automotive safety systems design and manufacture, this needs addressed immediately.
TL* THE CONTACT OWNS A 2017 BUICK REGAL. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE SHUDDERED WHILE SHIFTING GEARS. SERPENTINI CHEVROLET BUICK OF ORVILLE (1107 N MAIN ST, ORRVILLE, OH 44667) WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS REPAIRED THREE TIMES WITH AN OIL CHANGE WHILE TWO UNKNOWN TRANSMISSION PARTS WERE REPLACED. THE MECHANIC WAS UNABLE TO DUPLICATE THE FAILURE. THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO A TRANSMISSION SPECIALIST WHO DUPLICATED THE TRANSMISSION FAILURE. THE INDEPENDENT MECHANIC CONTACTED THE DEALER AND INFORMED THEM OF THE RESULT. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE MANUFACTURER CONTACTED THE DEALER AND WAS INFORMED THAT THERE WAS NOTHING WRONG WITH THE VEHICLE. THE FAILURE MILEAGE WAS 19,500.
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.