TSB N232421261 — Chevrolet Service campaign
N232421261 is a service campaign on file with NHTSA for the Chevrolet Bolt EV, 2020–2022 model years, filed and re-filed as 2 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. 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…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. N232421261 is filed as a service campaign, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years N232421261 names
| Vehicle | Model years |
|---|---|
| Chevrolet Bolt EV | 2020, 2021, 2022 |
Every document filed under N232421261
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| N232421261 | February 24, 2025 | Service campaign |
| N232421261 | February 6, 2025 | Service campaign |
Questions buyers ask
What is TSB N232421261?
N232421261 is a service campaign filed with NHTSA by Chevrolet, covering the Chevrolet Bolt EV across the 2020–2022 model years. NHTSA's summary reads: 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…
Which vehicles does N232421261 cover?
NHTSA's file names Chevrolet Bolt EV (2020–2022). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB N232421261 a recall, and is the repair free?
N232421261 is filed as a service campaign, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of N232421261?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under N232421261, its date, and NHTSA's own 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. This page lists only what NHTSA's manufacturer-communications file records under N232421261. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.