Service bulletins for the 2026 Peterbilt 548
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
18 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Electrical system are shown. Show all
| 02-177 | 2026-06-03. Service bulletin. ELECTRICAL SYSTEM. Troubleshooting procedures for 2.1m cab power windows are now available. |
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| 25KWB/25PBB | 2026-01-06. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. A new Recommended Repair has been added. It must be used if safety recall 25PACF is performed prior to or at the same time as this repair since the 25PACF remedy also satisfies this safety recall. |
| 25PBB | 2025-04-04. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Safety Recall The Exterior Lighting Switch (ELS) in certain Model 535, 536, 537, 548, and 567 chassis may not function and can be reset only by a key cycle. This issue may result in non-compliance with FMVSS/CMVSS 101 and 108. Affected chassis must have the Vehicle Soft ware updated. |
| 25PBB | 2025-03-04. Other. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. "Safety Recall – Interim Notification The Exterior Lighting Switch (ELS) in certain Model 535, 536, 537, 548, and 567 chassis may not function and can be reset only by a key cycle. This issue may result in non-compliance with US Federal Motor Vehicle Safety Standards (FMVSS) or Canadian Motor Vehicle Safety Standards (CMVSS) 101 and 108. This bulletin will be updated when software and programming procedures are available." |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.