Thomas Built Buses bulletin F1011
Thomas Built Buses filed this with NHTSA as a emissions communication dated Nov 14, 2025, received Aug 2, 2025, about the engine — 7 documents under this number: F1011-DLR LTR, F1011-Bulletin, F1011-OWN LTR. It names 3 model years (2023–2025). 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 communicationRevised Emissions Recall for GHG Label Emissions Recall
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| F1011-DLR LTR | Emissions | Nov 14, 2025 | 11025868 | not yet checked |
| F1011-Bulletin | Emissions | Nov 14, 2025 | 11025865 | not yet checked |
| F1011-DLR LTR | Emissions | Jul 11, 2025 | 11021231 | not yet checked |
| F1011-Bulletin | Emissions | Jul 11, 2025 | 11021230 | not yet checked |
| F1011-OWN LTR | Emissions | Jul 7, 2025 | 11021229 | not yet checked |
| F1011-DLR LTR | Emissions | Jul 7, 2025 | 11021228 | not yet checked |
| F1011-Bulletin | Emissions | Jul 7, 2025 | 11021222 | 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: 2023 Thomas Built Buses SAF-T-Liner C2; 2024 Thomas Built Buses SAF-T-Liner C2; 2025 Thomas Built Buses SAF-T-Liner C2.
None of these model years has a page on this site (it covers EPA-certified cars, trucks and SUVs from 2016), so the bulletin is listed here on its own.
Common questions
Source: NHTSA, 49 CFR 579.5Is Thomas Built Buses F1011 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.
Is the F1011 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 F1011 cover?
The manufacturer filed it against 3 model years: 2023 Thomas Built Buses SAF-T-Liner C2, 2024 Thomas Built Buses SAF-T-Liner C2, 2025 Thomas Built Buses SAF-T-Liner C2. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.