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
| PIC6392A | 2020-04-13. 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. |
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| PIC6390A | 2020-04-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a parts restriction is in place for the Central Gateway Module on 2020 Cadillac CT4, CT5, and Chevrolet Corvette. |
| PIC6384A | 2020-04-13. Service bulletin. STRUCTURE; ELECTRICAL SYSTEM. This Preliminary information communicates a parts restriction is in place for the Body Control Module on 2020 Cadillac CT4, CT5, and Chevrolet Corvette. |
| PIC6385A | 2020-04-13. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This Preliminary information communicates a parts restriction is in place for the exterior lighting module on 2020 Cadillac CT4, CT5 and Chevrolet Corvette. |
| PIC6391A | 2020-04-13. Service bulletin. SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM. This PI communicates a parts restriction is in effect on 2020 Cadillac CT4, CT5 and Chevrolet Corvette Electronic Brake Boost Control Module and Valve Kit, Brake Pressure Modulator. |
| PIC6388A | 2020-04-13. Service bulletin. LANE DEPARTURE: BLIND SPOT DETECTION; VISIBILITY. This PI communicates a parts restriction is in effect on 2020 Cadillac CT4, and CT5 Side Blind Zone Module. |
| PIC6383A | 2020-04-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a parts restriction is in place for the Video Processing Module on 2020 Cadillac CT5. |
| PIP5715 | 2020-04-13. Service bulletin. ENGINE. This Preliminary information communicates a low milage vehicle may have a rough idle and misfire concern. This may be a result of soot on the spark plugs. Using GDS raise engine speed to 2000 RPM for 10 minutes and reevaluate. |
| PIP5713 | 2020-04-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates P16F3 setting after performing a cylinder deactivation tes with GDS A software anomaly clear the codes when done with the test. Do not replace the ECM |
| PIP5693A | 2020-04-13. Service bulletin. ENGINE. The Preliminary Information communication advises the technician that the Product Quality Center has a part restriction for the E99 Engine Control Module. The dealer technician is advised to call the GM Product Quality Center for further assistance. |
| 150089005C | 2020-04-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT ADAPTIVE/MOBILITY. This Warranty Administration bulletin provides information on Essential Tools that include Consumable Parts (U.S. Only). |
| 050307009J | 2020-04-06. Service bulletin. EQUIPMENT; WHEELS. This informational bulletin provides information on Wheel Alignment Specifications, Requirements and Recommendations for GM Vehicles. |
| 040601029J | 2020-04-06. Service bulletin. ENGINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin explains Unscheduled Supplemental Services (including Flushing Services and Additives) and the Proper use of GM Simplified Maintenance Schedules. |
| 040089015U | 2020-04-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on Warranty Administration ? Required Operating Procedures - 8 Points (U.S. Only). |
| 000310003Y | 2020-04-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; TIRES. This warranty administration bulletin provides information on the tires supplied with a new vehicle are covered by General Motors against defects in material or workmanship under the Bumper-to-Bumper New Vehicle Limited Warranty. |
| 19NA218 | 2020-04-06. Service bulletin. EQUIPMENT; ENGINE. This technical bulletin provides a service procedure to correct a condition of Ticking Noise from the Engine. |
| 19NA104 | 2020-04-06. Service bulletin. EQUIPMENT; STRUCTURE:BODY; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area. |
| 20NA038 | 2020-03-30. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE. This informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence. |
| 16NA119 | 2020-03-30. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provide policy information to cover GMs policy on performing GM covered vehicle services and maintenance on vehicles originating/sold in Canada. |
| PIP5709 | 2020-03-09. Service bulletin. POWER TRAIN. This Preliminary information communicates the transmission used in the 2020 Corvette is on exchange with the supplier for early root cause analysis. |
| PIP5703 | 2020-03-09. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This Preliminary information communicates that the transmission control module is on restiction to help engineering root cause any early issue. |
| 050307009I | 2020-03-09. Service bulletin. WHEELS; EQUIPMENT. This informational bulletin provides retail, wholesale and fleet personnel with General Motors recommendations for customer concerns related to wheel alignment. |
| 20NA016 | 2020-03-09. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information on customer vehicles concern results in a manufacturer repurchase from the customer, GM depends on the dealership to host and administer the repurchase closing and intake of the returning vehicle. |
| 18NA306 | 2020-03-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only). |
| 16NA383 | 2020-03-02. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. This informational 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.