Service bulletins for the 2020 Chevrolet Corvette
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.
924 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 100089006H | 2021-08-09. Service bulletin. EQUIPMENT. This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only). |
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| 070089037Q | 2021-08-09. Service bulletin. EQUIPMENT. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs. |
| 070089037P | 2021-08-09. Service bulletin. EQUIPMENT. This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs. |
| 21NA124 | 2021-07-19. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:CANISTER. This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set. |
| 21NA117 | 2021-07-19. Service bulletin. ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). This service bulletin provides information and programming procedures for dealers/technicians on the release of Radio Software Update Version GB108.2 for vehicles equipped with Infotainment system RPO IOS or IOT, in addition to providing general robustness and stability enhancements. |
| 21NA094 | 2021-07-19. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides repair information to correct a customer concern of hood ajar message displayed on DIC, hood may not open using any electrical release buttons, but will open using manual release cable. |
| 21NA091 | 2021-07-19. Service bulletin. BACK OVER PREVENTION. This service bulletin provides information for customers/dealers/technicians on Normal Rearview Camera Display Operation - Flashing Diamond - Spot - or UFO like image on Rear View Camera Display. |
| 20NA218 | 2021-07-19. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6. |
| 20NA042 | 2021-07-19. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. This service bulletin provides a service procedure to correct a customer concern of Fuel Gauge May Intermittently Display Erratic and/or Empty Readings and MIL with DTC P0462. |
| 19NA044 | 2021-07-19. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. |
| 18NA306 | 2021-07-19. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). |
| 17NA087 | 2021-07-19. Service bulletin. TIRES; SUSPENSION. This informational bulletin provides information on Characteristics of Wide Low Aspect Ratio Tires, Vehicle Pulls Left or Right, Wanders, Follows Depressions in Road Surface, Tramlining. |
| 21NA124 | 2021-07-06. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set. |
| 21NA117 | 2021-07-06. Service bulletin. EQUIPMENT. This service bulletin provides information and programming procedures for dealers/technicians on the release of Radio Software Update Version GB108.2 for vehicles equipped with Infotainment system RPO IOS or IOT, in addition to providing general robustness and stability enhancements. |
| 21NA094 | 2021-07-06. Service bulletin. LATCHES/LOCKS/LINKAGES. This service bulletin provides repair information to correct a customer concern of hood ajar message displayed on DIC, hood may not open using any electrical release buttons, but will open using manual release cable. |
| 21NA091 | 2021-07-06. Service bulletin. BACK OVER PREVENTION. This service bulletin provides information for customers/dealers/technicians on Normal Rearview Camera Display Operation - Flashing Diamond - Spot - or UFO like image on Rear View Camera Display. |
| 20NA218 | 2021-07-06. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6. |
| 20NA042 | 2021-07-06. Service bulletin. FUEL SYSTEM, GASOLINE. This service bulletin provides a service procedure to correct a customer concern of Fuel Gauge May Intermittently Display Erratic and/or Empty Readings and MIL with DTC P0462. |
| 19NA044 | 2021-07-06. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. |
| 18NA306 | 2021-07-06. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). |
| 17NA087 | 2021-07-06. Service bulletin. TIRES. This informational bulletin provides information on Characteristics of Wide Low Aspect Ratio Tires, Vehicle Pulls Left or Right, Wanders, Follows Depressions in Road Surface, Tramlining. |
| N212330480 | 2021-06-14. Service bulletin. STRUCTURE. Service Update. On certain vehicles, there may be a hydraulic lift fluid leak at the front right hand (passenger) side of the vehicle. Dealers are to replace the front hydraulic lift fluid reservoir vented cap with a non-vented cap. |
| N202308490 | 2021-06-14. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. Service Update. Certain vehicles may have various updated software available as part of the radio continuous improvement. A most notable improvements list this software update may correct is located at the end of this bulletin for conditions or concerns a customer may experience. GM will update the software in the radio. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates. |
| PIC6392C | 2021-06-14. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a parts restriction is in place for the Sensing and Diagnostic Module on 2020 Cadillac CT4, CT5 and Chevrolet Corvette. |
| PIC6384F | 2021-06-14. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE. This Preliminary information communicates a parts restriction is in place for the Body Control Module on 2020 Cadillac CT4, CT5, Chevrolet Corvette, Suburban, Tahoe and GMC Yukon. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.