Chevrolet bulletin N232429740
Chevrolet filed this with NHTSA as a emissions communication dated Feb 24, 2025, about the engine. It names 7 model years (2018–2023). A emissions communication is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationEmission Recall. On certain vehicles with specific Malfunction Indicator Light (MIL) -on faults, the miles travelled calculation switches from the Transmission Output Speed Sensor (TOSS) to the Wheel Speed Sensor (WSS) and the mileage recorded by the On Board Diagnostic (OBD) System is accumulated at one-fourth actual due to an incorrectly calibrated parameter used in the calculation. Dealers will reprogram the engine control module.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N232429740 | Emissions | Feb 24, 2025 | 11014440 | not yet checked |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2019 Chevrolet LOW CAB Forward 3500; 2018 Chevrolet LOW CAB Forward 6500.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is Chevrolet N232429740 a recall?
No. A emissions communication is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the N232429740 repair free?
A emissions communication is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does N232429740 cover?
The manufacturer filed it against 7 model years: 2023 Chevrolet Silverado 3500HD, 2022 Chevrolet Silverado 3500HD, 2021 Chevrolet Silverado 3500HD, 2020 Chevrolet Silverado 3500HD, 2019 Chevrolet Silverado 3500HD, 2019 Chevrolet LOW CAB Forward 3500 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.