Service bulletins for the 2023 Mack Terrapro
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.
74 on file from NHTSA, as of 2026-10-19.
About U1FFF on the 2023 Mack Terrapro: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: U1FFF are shown. Show all
| KC-2226-Ver3 | 2023-06-05. Service bulletin. ELECTRICAL SYSTEM. CBR: Diagnostic Trouble Code (DTC) U1FFF68 - Factory Mode Active, Event Information - Model Year (MY) 2023 |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.