Chevrolet Bolt EV TSBs — Technical Service Bulletins by Year
4,505 manufacturer communications are on file with NHTSA for the Chevrolet Bolt EV — service bulletins, service campaigns, warranty extensions, and software updates, 2017 to 2027. Pick a year for its bulletin list.
A TSB is factory repair guidance, not a recall — the repair is not automatically free. For defects and free repairs, see the Chevrolet Bolt EV problem rankings and each year's recall list.
Warranty extensions, campaigns & software updates
The communications worth checking your VIN against — unlike ordinary bulletins, these can mean free or reimbursed work if your vehicle qualifies.
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.
Certain vehicles may have a condition in which the software that maintains the RESS battery pack may inadvertently cause a drain on the high voltage and low voltage batteries. Dealers are to program the Battery Energy Control Module then fully charge the high voltage battery to…
Model years named: 2027
• Improved vehicle performance when driving in Reverse on slippery surfaces • Better One-Pedal Driving performance • Additional protection for battery health and prevention for battery drain • Improved accuracy for driver display messages • This update contains a required…
Model years named: 2027
Certain vehicles may have a condition in which a fastener may be loose at the steering column to cockpit beam. Dealers will inspect the fasteners and torque them to the proper value.
Model years named: 2027
• Additional protection for battery health and to help prevent battery drain • Improved charging messaging in the driver display • Improved vehicle diagnostics This update includes improvements to your battery health management system. We recommend you charge to 100% as soon as…
Model years named: 2027
Certain vehicles may have a condition in which the software that maintains the RESS battery pack may inadvertently cause a drain on the high voltage and low voltage batteries. Dealers are to fully charge the high voltage battery to reset the cell balancing software.
Model years named: 2027
Certain vehicles may have a condition in which a bolt(s) on the left or right side of the rear wheel hub may be incorrectly torqued. Dealers will inspect, and if necessary, replace the rear wheel hub bolt(s).
Model years named: 2027
• Improvements to traction and stability control on uneven terrain • Improvements to braking performance on low-traction surfaces • Improvements to assisted braking • Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to…
Model years named: 2027
• Fixes to help ensure responsiveness for the driver display and rear view camera. • Improvements to reliability for alerts and chimes. • Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras.
Model years named: 2027
• Improvements to diagnostics and service messaging for battery health, particularly in humid conditions. • Improvements to transmission diagnostics used for shifting. • Improvements to charging system diagnostics. • Fixes to help protect EV adapter from overheating while…
Model years named: 2027
Improvements to OnStar functionality.
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.
Model years named: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2027
Bulletins by model year
| Year | TSBs | Most bulletined areas | |
|---|---|---|---|
| 2027 | 36 | Fuel system, Steering | View bulletins |
| 2023 | 359 | Electrical, Fuel system | View bulletins |
| 2022 | 512 | Electrical, Fuel system | View bulletins |
| 2021 | 501 | Electrical, Engine | View bulletins |
| 2020 | 599 | Electrical, Engine | View bulletins |
| 2019 | 628 | Electrical, Wheels & tires | View bulletins |
| 2018 | 816 | Electrical, Engine | View bulletins |
| 2017 | 1,054 | Electrical, Engine | View bulletins |
Questions buyers ask
How many TSBs does the Chevrolet Bolt EV have?
NHTSA's manufacturer-communications file lists 4,505 technical service bulletins and related communications for the Chevrolet Bolt EV across the 2017–2027 model years. The most bulletined areas are electrical, engine, wheels & tires.
Are Chevrolet Bolt EV TSB repairs free?
Not automatically. A TSB tells dealers how to fix a known pattern; you pay unless the vehicle is under warranty or the bulletin is a warranty extension or service campaign that covers your VIN. Recall repairs, by contrast, are always free.
How do I get the full text of a Chevrolet Bolt EV TSB?
Take the bulletin's document ID to a dealer or to NHTSA's site — this page carries each communication's ID, date, and NHTSA's summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. Counts cover communications NHTSA's file names against Chevrolet Bolt EV model years shown here. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.