Service bulletins for the 2020 Buick Regal
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
587 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 18NA306 | 2020-10-26. Service bulletin. EQUIPMENT; STRUCTURE:BODY. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only). |
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| 990089019U | 2020-10-05. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information. |
| 20NA159 | 2020-09-28. Service bulletin. TIRES. This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only). |
| 20NA157 | 2020-09-28. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF. |
| 18NA099 | 2020-09-28. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim. |
| 150089002B | 2020-09-08. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STRUCTURE. This bulletin provides information to dealers regarding transportation damage repair claim submission requirements. |
| 19NA249 | 2020-08-31. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides repair information to correct a customer concern of Radio Favorites Grayed Out or Unavailable at Times. |
| 16NA338 | 2020-08-31. Service bulletin. ENGINE; POWER TRAIN. This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only. |
| PIP5720A | 2020-08-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT; POWER TRAIN. This Preliminary information communicates that a possible trans fluid leak found may only be residual fluid that was left during the assembly process with no repairs needed if no dye is detected after cleaning and re-evaluation. |
| PIC6418 | 2020-08-10. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM. This Preliminary information communicates steps to perform to determine if the concern relates to a concern that is under engineering investigation. |
| PIP5545C | 2020-08-10. Service bulletin. ENGINE; EQUIPMENT. This Preliminary information communicates a possible noise from the water pump causing a DTC and the diagnostics for the repair. |
| PIP5095G | 2020-08-10. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon and may also have an oil or coolant leak. Technician may find coolant or oil in a spark plug tube. If the Spark Plug Tube is leaking and it is determined that the oil or coolant is not coming from a leak above the spark plug then replace the cylinder Head, spark plug and coil. |
| PIP5704D | 2020-08-10. Service bulletin. STRUCTURE. This Preliminary information communicates a work around when only 11 digit PUN (Part Unique Number) is seen on Service Solenoid Body Assembly. |
| 990089019T | 2020-08-10. Service bulletin. EQUIPMENT. This warranty administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information. |
| 110089005O | 2020-08-10. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only). |
| 20NA138 | 2020-08-10. Service bulletin. POWER TRAIN. This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management. |
| 20NA132 | 2020-08-10. Service bulletin. ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements. |
| 19NA249 | 2020-08-10. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides repair information to correct a customer concern of Radio Favorites Grayed Out or Unavailable at Times. |
| 070849020Q | 2020-06-22. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides information for the IPC odometer programming method quick reference guide. |
| 070604025M | 2020-06-22. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides information on Clicking/Ticking Sound/Noise Heard During Cold Start and that this should be considered a normal characteristic. |
| 060089029T | 2020-06-22. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT. This informational bulletin includes information on Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability. |
| 060089029S | 2020-06-22. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT. This informational bulletin includes information on Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability. |
| 030089006R | 2020-06-22. Service bulletin. EQUIPMENT. This informational bulletin provides the dealership with how to prep a vehicle for delivery to the customer to aid in higher CSi scores. |
| 20NA098 | 2020-06-22. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. This informational bulletin explains to the tech on how to order a new fuel injector by matching the part number on the part and ordering it from the EPC. |
| 16NA383 | 2020-06-22. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.