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 U029D 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: U029D are shown. Show all
| CBR-2131 202308 | 2023-09-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. CBR: Intermittent Diagnostic Trouble Codes U02A3,U029D, U029E - USE FOR NEW VEHICLES (US21+OBD22 Emissions) |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.