2018 Buick Regal Tourx Electrical system Problems
- Complaints
- 3about this part
- Share
- 21%of 14 total for the year
- Median mileage
- 900miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the electrical system of the 2018 Buick Regal Tourx, 21% of the 14 complaints for this model year. Where a mileage was given, the median is 900 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“When auto start/stop turns on the aux pump that pumps coolant into the cabin to continue to heat makes the most annoying sound in the world. Gm states that it's normal but, under normal operation you can barely hear the pump. When it malfunctions you can hear it down the block. But sure, that's normal, of course it is. That's why they changed the design of the aux pump for 2020 but won't admit fault. Gm refusing to change the aux pump, I had to buy it and do the work myself. Buick warranty is useless.”
NHTSA complaint #11360404, filed 2020-09, 900 miles“Shift to park message in DIC along with audible warning, even though car in park. Will not allow you to lock car, will run down battery. Have to play with shifter to stop. Eventually couldn't get it to stop. Per dealer Possible intermittent failure of the park switch in transmission shift control. Need to replace transmission shift control assembly. Car out of warranty, cost was $726.21. Dealer said this was an updated part.”
NHTSA complaint #11571801, filed 2024-02“The backup grid randomly disappears on the rear view camera when the vehicle is in reverse. This happens at least 1-2 times every trip, and sometimes as often as every other time I put the transmission in reverse.”
NHTSA complaint #11430327, filed 2021-08Related service bulletins
- 11017595Apr 3, 2025This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
- 11017443Apr 2, 2025This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
- 11017244Mar 31, 2025The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other…
- 11017207Mar 21, 2025This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414…
- 11017031Mar 12, 2025This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
- 11014230Jan 31, 2025This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11013069Jan 9, 2025This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11012929Jan 7, 2025This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- 11011805Dec 6, 2024This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
- 11010421Oct 3, 2024This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 3 | 21% |
Other parts of the 2018 Buick Regal Tourx
4 complaintsOther or unknown
4 complaintsBrakes
3 complaintsBack-over prevention (rear camera)
2 complaintsTransmission and drivetrain
2 complaintsLane departure
1 complaintsBody and structure
1 complaintsWheels
1 complaints
← All problems reported for the 2018 Buick Regal Tourx
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology