Service bulletins for the 2021 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.
658 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 18NA306 | 2021-05-03. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). |
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| 18NA099 | 2021-05-03. Service bulletin. EQUIPMENT. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim. |
| 16NA109 | 2021-05-03. Service bulletin. STEERING. This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear. |
| PIT5791A | 2021-04-19. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; BACK OVER PREVENTION:SOFTWARE. This Preliminary information communicates a condition where the radio may display a :connection not availale, please call OnStar agent". This bulletin advises that Engineering is working on a software solution that will prevent the message from displaying when listening to non-SXM sources, but still allow the message to display when a loss of connectivity exists and the user is attempting to play Sirius XM. |
| PIP5796 | 2021-04-19. Service bulletin. FUEL SYSTEM, GASOLINE; BACK OVER PREVENTION. This Preliminary information communicates a noise from the purge hose heard in the vehicle and the repair preliminary instructions to dampen this noise. |
| PIT5805A | 2021-04-19. Service bulletin. BACK OVER PREVENTION. This Preliminary information communicates that a dealer may encounter a vehicle that is making a grinding or growling noise on the first few brake applications after the vehicle has been sitting overnight. The dealer is instructed to perform no repairs at this time as engineering is looking into a repair. The dealer is advised that this PI will be converted into a bulletin with repair instruction when updated parts are available. |
| PIP5694C | 2021-04-19. Service bulletin. BACK OVER PREVENTION. This Preliminary information communicates noise condition that has been identified and the repair that is in process. A special Labor Operation was added for tracking purposes only. All models associated with the in process repair have been added to this PI. |
| N202325360 | 2021-03-22. Service bulletin. EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:MATERIALS:FLOORING. Customer Satisfaction Program - Certain 2021 model year Buick Enclave and Chevrolet Traverse vehicles were delivered without floor mats. Dealers will install standard floor mats. |
| N202323940 | 2021-03-22. Service bulletin. STRUCTURE. Customer Satisfaction - Certain 2021 model year Buick Enclave and Chevrolet Traverse vehicles do not have the accessory all-weather floor mats that were invoiced for the vehicle. Dealer will install floor mats. |
| PIE0608A | 2021-03-08. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service AWD Lamp illuminated on the Driver Information Center (DIC) and also having multiple DTCs set. |
| PIE0608 | 2021-03-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service AWD Lamp illuminated on the Driver Information Center (DIC) and also having multiple DTCs set. |
| 150089004C | 2021-03-08. Service bulletin. SUSPENSION:FRONT:MACPHERSON STRUT; SUSPENSION:FRONT:SHOCK ABSORBER; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. |
| 21NA026 | 2021-03-08. Service bulletin. EQUIPMENT; STRUCTURE; EQUIPMENT ADAPTIVE/MOBILITY. This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen. |
| 20NA033 | 2021-03-01. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; SUSPENSION. This technical bulletin provides a procedure to modify the rear suspension rebound pin and reinstall to correct a condition of Squeak/Creak Noise from Rear Suspension. |
| 19NA256 | 2021-03-01. Service bulletin. ENGINE. This service bulletin provides diagnostic aid procedure to perform inspections to determine if the engine needs to be replaced as opposed to just internal parts for knocking, rattle, squeak and/or squeal type noises from engine. |
| 18NA073 | 2021-03-01. Service bulletin. ENGINE. This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement. |
| PIE0581A | 2021-03-01. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY; EQUIPMENT. This engineering informational bulletin is requesting pictures from technicians in regards to water leak issue at Sunroof Window - Rear that drives a warrantable item type of repair. |
| 090604026S | 2021-03-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE; EQUIPMENT. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2. |
| 040089015V | 2021-03-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on Warranty Administration ? Required Operating Procedures - 8 Points (U.S. Only). |
| 010601011L | 2021-03-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; EQUIPMENT. This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption. |
| 20NA235 | 2021-02-22. Service bulletin. EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS. This service bulletin provides information to aid a dealer/customer concern of Radio Unwanted Phantom Touch or Non-Responsive to Touch After Cleaning/Disinfecting Radio Display. |
| 20NA232 | 2021-02-22. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE; ELECTRICAL SYSTEM. This service bulletin provides a service procedure to correct a customer concern of Power Liftgate Stops When Opening and/or Will Not Close from Open Position DTC B153F Sets. |
| 20NA159 | 2021-02-22. Service bulletin. TIRES. This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only). |
| 18NA306 | 2021-02-22. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). |
| PIT5805 | 2021-02-16. Service bulletin. BACK OVER PREVENTION. This Preliminary information communicates that a dealer may encounter a vehicle that is making a grinding or growling noise on the first few brake applications after the vehicle has been sitting overnight. The dealer is instructed to perform no repairs at this time as engineering is looking into a repair. The dealer is advised that this PI will be converted into a bulletin with repair instruction when updated parts are available. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.