PACCAR service campaign E328
What it saysCertain chassis with CARB 2024 compliant MX-13 engines must have the PEU wiring harnesses updated. NHTSA’s full summary ↓
PACCAR filed this with NHTSA as a service campaign dated Oct 16, 2026, received Sep 23, 2026, about the electrical system — 2 documents under this number. It names 10 model years across Kenworth and Peterbilt (2025–2026). 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.
One page for every brand it was filed under. Each brand’s bulletins: Kenworth · Peterbilt.
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.
Certain chassis with CARB 2024 compliant MX-13 engines must have the PEU wiring harnesses updated. The original wiring and fuse are insufficient for electrical system operation and protection.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| E328 | Service bulletin | Oct 16, 2026 | 11038716 | PDF, 170 KB |
| E328 | Service campaign | Sep 11, 2026 | 11037480 | PDF, 439 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 themKenworth 4 model years
Also filed against: 2025 Kenworth T680; 2026 Kenworth T680; 2025 Kenworth T880; 2026 Kenworth T880.
Peterbilt 6 model years
Also filed against: 2025 Peterbilt 567; 2026 Peterbilt 567; 2025 Peterbilt 579; 2026 Peterbilt 579; 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 electrical system
Source: same model, same component group12 other manufacturer communications filed against these PACCAR models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Kenworth list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 26PACD | Service campaign | Sep 19, 2026 | "The PKC Group power distribution center (PDC) in certain vehicles may be contaminated with oil, which could result in a loss of power to th… |
| E324 | Service campaign | Jul 16, 2026 | "Campaign New and improved software is now required for chassis equipped with an Engine Model Year 2016 PACCAR MX-13 engine to maintain DEF… |
| 24PBE/KWE | Warranty extension | Feb 11, 2026 | The right-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between… |
| 24KWE / 24PBE | Emissions | Jan 31, 2026 | The parts section has been updated for clarity. The right-hand shift stalk may have an improper wire harness terminal crimp within the wire… |
| 24PBE_24KWE | Warranty extension | Jan 13, 2026 | 24PBE_24KWE RH Shift Stalk Update Warranty section has been updated with revised verbiage for picture requirements. |
| 24PBE | Service campaign | Nov 26, 2025 | The right-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between… |
| 24KWE | Service campaign | Nov 26, 2025 | The right-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between… |
| 98-030 | Service campaign | May 31, 2025 | 5/29/2025: A new Ethernet Multiplexed Architecture (EMUX) Service Tool Kit service manual (SM034-022) has been released to provide general u… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Kenworth and Peterbilt, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is PACCAR E328 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 E328 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 E328 cover?
The manufacturer filed it against 10 model years across 2 brands (Kenworth and Peterbilt): 2025 Kenworth T680, 2026 Kenworth T680, 2025 Kenworth T880, 2026 Kenworth T880, 2025 Peterbilt 567, 2026 Peterbilt 567 and more. 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: built 5 Aug 2024 – 23 Dec 2024; built 5 Aug 2024 – 13 Dec 2024 — the build date is on the certification label in the driver’s door jamb.