Service bulletins for the 2020 Buick Enclave
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.
756 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 17NA271 | 2020-09-28. Service bulletin. SERVICE BRAKES, HYDRAULIC; WHEELS. This bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customers concern of wheel clicking. |
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| PIE0570A | 2020-09-08. Service bulletin. POWER TRAIN; EQUIPMENT. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards torque converter clutch (TCC) shudder occurring during light throttle acceleration 2-6 gears. |
| PIE0567A | 2020-09-08. Service bulletin. EQUIPMENT. This engineering information (EI) ends the needs for information from the field regarding SD Code messages displayed on the Radio Screen and/or Instrument Cluster - Navigation System Malfunction. |
| 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. |
| 19NA115 | 2020-08-31. Service bulletin. SERVICE BRAKES. This technical bulletin provides repair information to correct a customer concern of a rear brake squeal noise. |
| 17NA271 | 2020-08-31. Service bulletin. EQUIPMENT; WHEELS. This bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customers concern of wheel clicking. |
| 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. |
| PIP5180C | 2020-08-10. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This Preliminary Information communication provides information to the technician about vehicles that have hard start, extended crank, or black smoke from the exhaust when starting. Technician will need to perform fuel quality test, spark test, and a compression test. Technician should also install a vacuum gauge prior to cold start and watch needle for signs of a sticking valve. |
| PIP5608D | 2020-08-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT. This Preliminary information communicates to perform a transmission fluid drain and fill to correct a TCC shudder concern. |
| PIT5737B | 2020-08-10. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. This Preliminary information communicates an XM service concern of no audio at startup until a channel change and directs to contact XM for direct support. |
| 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. |
| PIP5528F | 2020-08-10. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates the repair recommendations for misfire and DTC's immediately following HFV6 re-manufactured engines replacement. |
| 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. |
| PIT5754 | 2020-08-10. Service bulletin. EQUIPMENT. This Preliminary information communicates information on radio software anamolies and future radio software updates to correct the concern. |
| PIP5528E | 2020-08-10. Service bulletin. ENGINE. This Preliminary information communicates the repair recommendations for misfire and DTC's immediately following HFV6 re-manufactured engines replacement. |
| PIP5257E | 2020-08-10. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have oil mixed in with the engine coolant. Technician will need to inspect the oil cooler if equipped for possible leaking into the cooling system through the radiator. If no issue found replace the engine as well as all rubber coolant hoses. Also updated to include ALL HFV6 engines Gen1 and Gen2. |
| 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. |
| 20NA136 | 2020-08-10. Service bulletin. POWER TRAIN. This informational bulletin describes/outlines the process for the 9T65 Automatic Transmission Replacement Pilot Program (U.S. Only). |
| 20NA132 | 2020-08-10. Service bulletin. ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements. |
| 20NA071 | 2020-08-10. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC:POWER ASSIST; ENGINE. This technical bulletin provides repair information to correct a customer concern of the Service Engine Soon Lamp illuminated and/or Service Power Brake Assist message displayed, with DTCs P0557 or P0558 Stored. |
| PIE0570 | 2020-06-22. Service bulletin. ENGINE; POWER TRAIN. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards torque converter clutch (TCC) shudder occurring during light throttle acceleration 2-6 gears. |
| PIE0567 | 2020-06-22. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to SD Code messages displayed on the Radio Screen and/or Instrument Cluster - Navigation System Malfunction. |
| 070849020Q | 2020-06-22. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides information for the IPC odometer programming method quick reference guide. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.