Keep Bolt EV separate from other versions
IIHS identifies MY2017 introduction and driver test CEN1713 for a MY2017 Bolt EV Premier, applying MY2017–2021. This is not Bolt EUV. Manual instructions below are verified for MY2018, not every Bolt.
Insurance Institute for Highway Safety: IIHS: 2018 Chevrolet BoltGeneral Motors / Chevrolet: 2018 Chevrolet Bolt EV Owner’s Manual
Record vehicle version, actual battery-assembly identity and known work on it. Body year is not battery history; without replacement records, earlier battery condition remains unknown.
No start after impact: the manual’s explanation
The MY2018 manual explains that a collision can disable high voltage, preventing a start and displaying SERVICE VEHICLE SOON. Service is required before return to use. Battery inspection, testing or replacement also requires a specially trained technician.
General Motors / Chevrolet: 2018 Chevrolet Bolt EV Owner’s Manual
No-start alone therefore does not establish internal battery destruction. Separate documented shutdown, visible physical traces and specialist test results. No reactivation or HV-disassembly operations are provided here.
NHTSA 21V-560 describes manufacturing conditions
GM’s July 23, 2021 report covers MY2017–2018 Bolt EV and certain MY2019 vehicles with N2.1-design cells made in Ochang. It describes two rare manufacturing defects occurring together in a cell, potentially producing heat, smoke and thermal battery/vehicle damage.
General Motors / NHTSA repository: Part 573 Safety Recall Report 21V-560
This historical report reflects investigation and remedy in July 2021, not current campaign status or an individual VIN’s completed work. Its population is not a measured probability of fire after impact. Check current vehicle condition and service applicability separately.
General Motors / NHTSA repository: Part 573 Safety Recall Report 21V-560
Underside damage and thermal traces are different findings
Record dents, scratches, broken mounts, heat traces and inaccessible areas separately. An external mark need not establish an internal cell defect. Equally, no visible housing defect is not an electrical or internal test result.
Attributing damage requires baseline photographs, contact location, timing and diagnostic findings. A recall number proves no individual thermal cause; an impact mark does not exclude the manufacturing mechanism. Leave causation unresolved where evidence is missing.
What controlled testing examined
IIHS lists separate driver/passenger small-overlap ratings of Good and Acceptable. CEN1713 describes the specific test vehicle and protocol, not battery certification after another event or repair verification.
Insurance Institute for Highway Safety: IIHS: 2018 Chevrolet Bolt
The final record should distinguish body condition, physical defects, HV-test results and service documents. Paid replacement without corresponding inspection does not establish physical cause.
Applicability to the individual vehicle
- MY2018 manual instructions do not inherit the MY2017–2021 IIHS range.
- July 2021 recall text is historical; superseded interim parking/charging advice is not presented as current.
- Bolt EV and EUV remain separate; no internal battery damage, isolation value or cause is inferred.
Primary sources
Sources checked on . Model or recall information does not establish the condition of an individual VIN.
General Motors / NHTSA repository: Part 573 Safety Recall Report 21V-560
Applicability and source location
Original July 2021 scope: MY2017–2018 Bolt EV and certain MY2019 with N2.1 cells from Ochang. Historical, not current VIN status.
Pages 1–2: cell scope, two concurrent manufacturing defects and thermal risk; pages 3–4: dated remedy/chronology.
Document date: 2021-07-23. Checked: .
Insurance Institute for Highway Safety: IIHS: 2018 Chevrolet Bolt
Applicability and source location
Bolt EV, not EUV. 2017 Premier CEN1713 driver-side applicability MY2017–2021.
MY2017 introduction; separate driver/passenger ratings; no post-crash battery inspection result.
Document date: not specified in the source. Checked: .
General Motors / Chevrolet: 2018 Chevrolet Bolt EV Owner’s Manual
Applicability and source location
US MY2018 Bolt EV, HV safety/crash shutdown; not transferred to other model years.
Printed pages 22–23 and 264: shutdown, SERVICE VEHICLE SOON, battery damage and trained-technician inspection.
Document date: 2018. Checked: .