Service bulletins for the 2021 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.
770 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 00-06-01-012M | 2023-04-06. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin advises about the possible issues that may occur when using a scotch brite pad or highly abrasive disk on gasket sealing surfaces or reused parts. |
|---|---|
| 23-NA-044 | 2023-03-30. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides information on AGM batteries that require less frequent charging in storage. |
| 20-NA-159 | 2023-03-30. Service bulletin. TIRES; WHEELS. This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only). |
| PIT5985 | 2023-03-13. Service bulletin. POWER TRAIN. This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed over the air update. |
| PIT5832F | 2023-03-13. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly. |
| N212336962 | 2023-03-08. Service bulletin. POWER TRAIN; UNKNOWN OR OTHER; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; ELECTRICAL SYSTEM. Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles. The Transmission Control Module (TCM), after detecting a loss of communications fault with other control modules, may incorrectly clear the loss of communications Diagnostic Trouble Codes (DTCs) when the vehicle is keyed off and, if the loss of communications fault persists, may not detect it again when the vehicle is keyed back on. If this were to happen, the transmission could operate in a default mode with no DTC set and the MIL not illuminated. Dealers are to reprogram the Transmission Control Module (TCM) with updated software. |
| 15-NA-017 | 2023-03-04. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides policy information on Causal Part requirements for transactions submitted to GM for payment. |
| 23-NA-019 | 2023-03-04. Service bulletin. STRUCTURE. This bulletin provides information on Corvette C8 and Cadillac CT6 Structural Parts Restriction. |
| 22-NA-127 | 2023-03-04. Service bulletin. BACK OVER PREVENTION:SOFTWARE; EQUIPMENT:ELECTRICAL. This service bulletin provides repair information on release of Radio Software Version V160 Update to correct customer concerns of radio software issues. |
| 22-NA-041 | 2023-03-03. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT. This service bulletin provides repair information to correct a customer concern of Air Conditioning Not Blowing Cold Air. |
| 18-NA-146 | 2023-03-03. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only). |
| 17-NA-073 | 2023-03-03. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides information regarding the field action courtesy transportation policy. |
| PI0754F | 2023-03-03. Service bulletin. VISIBILITY:GLASS, SIDE/REAR:CRITICAL FASTENERS; UNKNOWN OR OTHER; STRUCTURE. This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic. |
| 99-04-20-002N | 2023-03-03. Service bulletin. POWER TRAIN. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation. |
| 18-NA-263 | 2023-02-28. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides policy information for variable diagnostic time allowances on select labor operations (U.S. Only). |
| 17-NA-078 | 2023-02-28. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING. This service bulletin provides information on Corvette and Camaro Exhaust Tone During Wide Open Throttle while in Sport or Track Modes and that this is considered a normal characteristic. |
| 13-03-10-001J | 2023-02-28. Service bulletin. WHEELS. This service bulletin provides information on summer tire performance and tire cold weather cracking. |
| 01-08-42-001O | 2023-02-28. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines. |
| 23-NA-019 | 2023-02-23. Service bulletin. STRUCTURE. This bulletin provides information on Corvette C8 and Cadillac CT6 Structural Parts Restriction. |
| 19-NA-218 | 2023-02-23. Service bulletin. ENGINE AND ENGINE COOLING. This service bulletin provides a service procedure to correct a condition of a Ticking Noise from the Engine. |
| 17-NA-239 | 2023-02-23. Service bulletin. SERVICE BRAKES, HYDRAULIC. This bulletin provides information on possible normal brake drag caused by the vehicle parked for an extended period of time. |
| 22-NA-115 | 2023-02-21. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention. |
| PIT5832E | 2023-02-13. Service bulletin. COMMUNICATION. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly. |
| PIT5971 | 2023-02-13. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary information communicates to the technician that GM is aware of this concern with audio loss and the OnStar LED being red. GM is working on a solution to correct this customers concern. |
| PIT5966A | 2023-02-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.