Peterbilt service campaign 15-034
What it saysCertain Kenworth L770 and Peterbilt Model 520 chassis may encounter a slight increase in effort in the right-hand steering shaft when turning the wheel. NHTSA’s full summary ↓
Peterbilt filed this with NHTSA as a service campaign dated Feb 13, 2026, received Jan 6, 2026, about the steering — 2 documents under this number. 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.
Certain Kenworth L770 and Peterbilt Model 520 chassis may encounter a slight increase in effort in the right-hand steering shaft when turning the wheel.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 15-034 | Service campaign | Feb 13, 2026 | 11029729 | PDF, 218 KB |
| 15-034 | Service bulletin | Dec 23, 2025 | 11027059 | PDF, 429 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 520; 2025 Peterbilt 520; 2026 Peterbilt 520.
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 steering
Source: same model, same component group2 other manufacturer communications filed against the Peterbilt 520 under the same component group (steering), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 26PACA | Service campaign | May 20, 2026 | KW: Certain Kenworth L770 chassis may have Right-Hand (RH) steering cross shaft bearing mounting holes that are misaligned, resulting in in… |
| 46-028 | Service campaign | May 14, 2026 | Certain Peterbilt Model 520 BEV chassis with an Accelera Power Control and Accessory System (PCAS) were manufactured without a check valve i… |
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 15-034 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 15-034 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 15-034 cover?
The manufacturer filed it against 3 model years: 2024 Peterbilt 520, 2025 Peterbilt 520, 2026 Peterbilt 520. 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 24 Apr 2023 – 5 Dec 2024 — the build date is on the certification label in the driver’s door jamb.