Peterbilt service campaign 41-028
What it saysThe campaign expiration date has been extended from 10/01/2026 to 04/01/2027. NHTSA’s full summary ↓
Peterbilt filed this with NHTSA as a service campaign dated Sep 5, 2026, received Sep 29, 2026, about the engine. It names 3 model years (2024–2026). A service campaign 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 communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
The campaign expiration date has been extended from 10/01/2026 to 04/01/2027.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 41-028 | Service campaign | Sep 5, 2026 | 11037539 | PDF, 179 KB |
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: 2024 Peterbilt 589; 2025 Peterbilt 589; 2026 Peterbilt 589.
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.
More bulletins about the engine
Source: same model, same component group7 other manufacturer communications filed against the Peterbilt 589 under the same component group (engine), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| E340 | Emissions | Oct 16, 2026 | KW Certain vehicle model year 2026 Kenworth chassis equipped with EMY2025 PACCAR MX engines require an amended engine label. The engine labe… |
| P001 | Service campaign | Sep 11, 2026 | "KW: The chassis list has been updated to include 1 chassis. The total chassis count is now 53. A link to the PACCAR Powertrain Prognostics… |
| P002 | Service campaign | Sep 3, 2026 | "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to incl… |
| 99-051 | Emissions | May 18, 2026 | There is an update to the CARB Base Emissions Warranty Limits table and Manufacturer’s Warranty Coverage section in certain Engine Model Yea… |
| 43-087 | Emissions | May 5, 2026 | EMY21-25 GHG Label Replacement (KW) Certain T680 / T800 / T880 / W900 / W990 have updated GHG labels available for order and installation.… |
| E326 | Emissions | Apr 1, 2026 | EPA 17-21 MX-13 Fuel Injector Connector SRTs have been added to the SRT tables in PRWS for replacement of the injector connector shells |
| E322 | Service campaign | Oct 29, 2024 | E322 - EMY2024 CARB MX Software Update - INTERIM Campaign – Interim Notification Certain model year 2025 567, 579 and 589 chassis equipped… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Peterbilt, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Peterbilt 41-028 a recall?
No. A service campaign 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 41-028 repair free?
A service campaign 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 41-028 cover?
The manufacturer filed it against 3 model years: 2024 Peterbilt 589, 2025 Peterbilt 589, 2026 Peterbilt 589. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: 2023-2026 Model 589: built 21 Apr 2023 – 4 Apr 2025 — the build date is on the certification label in the driver’s door jamb.