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Service bulletins for the 2021 Chevrolet Bolt EV

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.

506 on file from NHTSA, as of 2026-10-19.

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Only bulletins with type: Service campaign are shown. Show all

Bulletins, newest first
N252530430-012026-08-19. Service campaign. UNKNOWN OR OTHER. Certain vehicles may have a condition where a false diagnostic trouble code (DTC) is set. Dealers are to reprogram the Hybrid Powertrain Control Module 2.
N2525415102026-03-03. Service campaign. UNKNOWN OR OTHER. Certain vehicles may have been sold with a GM NACS Level 2 EV charging adapter (NACS to J1772) in which a quality issue was identified. Dealers are to provide the customer with the latest design charging adapter.
N2525304302026-01-27. Service campaign. UNKNOWN OR OTHER. Certain vehicles may have a condition where a false diagnostic trouble code (DTC) is set. Dealers are to reprogram the Hybrid Powertrain Control Module 2.
N2525304302026-01-15. Service campaign. UNKNOWN OR OTHER. Certain vehicles listed above may have a condition where a false diagnostic trouble code (DTC) is set. Dealers are to reprogram the Hybrid Powertrain Control Module 2.
N252494770-012025-06-20. Service campaign. UNKNOWN OR OTHER. Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owner is prevented from seeking civil penalties in litigation. Vehicle owners of the affected vehicles will be mailed an owner’s manual and warranty insert containing this information in English and Spanish.
N2524947702025-06-17. Service campaign. UNKNOWN OR OTHER. Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owner is prevented from seeking civil penalties in litigation. Vehicle owners of the applicable vehicles will be mailed an owner’s manual and warranty insert containing this information in English and Spanish.
N2324212612025-02-24. Service campaign. UNKNOWN OR OTHER. Certain 2020 – 2022 model year Chevrolet Bolt EV and 2022 model year Chevrolet Bolt EUV vehicles may have a condition in which a false diagnostic trouble code (DTC), U3636 symptom 09, is triggered. This false DTC is resulting in customers experiencing a Malfunction Indicator Lamp (MIL) illuminated in the Driver Information Center (DIC), a Reduced Propulsion message, and a charging limited to 30% State of Charge. Since this is a false DTC, it can lead to unnecessary battery pack replacements. Dealers are to reprogram the Hybrid Powertrain Control Module 2 and provide the customer with a free NACS Adapter.
N2324212612025-02-06. Service campaign. UNKNOWN OR OTHER. Certain 2020 – 2022 model year Chevrolet Bolt EV and 2022 model year Chevrolet Bolt EUV vehicles may have a condition in which a false diagnostic trouble code (DTC), U3636 symptom 09, is triggered. This false DTC is resulting in customers experiencing a Malfunction Indicator Lamp (MIL) illuminated in the Driver Information Center (DIC), a Reduced Propulsion message, and a charging limited to 30% State of Charge. Since this is a false DTC, it can lead to unnecessary battery pack replacements. Dealers are to reprogram the Hybrid Powertrain Control Module 2 and provide the customer with a free NACS Adapter.
N2424701622024-10-31. Service campaign. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Service Update - Certain vehicles may have a condition where the advanced diagnostic software recall remedy in NHTSA Recall 21V650 may not have been correctly installed in this vehicle population. Dealers are to reprogram the Hybrid Powertrain Control Module 2, Battery Energy Control Module and the Body Control Module.
N2424434902024-10-01. Service campaign. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Service update - certain vehicles may have a condition where a false diagnostic trouble code (DTC) is set. Dealers are to reprogram the Hybrid Powertrain Control Module 2.
General Communication2024-08-26. Service campaign. ELECTRICAL SYSTEM. Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.
N2424430002024-06-27. Service campaign. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Service update - certain vehicles may need the battery software updated. Dealers will reprogram the Hybrid Powertrain Control Module 2, Battery Energy Control Module, and the Body Control module.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.