Service bulletins for the 1999 Mack MR
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.
27 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Radiator are shown. Show all
| SL273001 | 2000-12-07. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. SUBJECT REGARDING AN AMBIENT AIR TEMPERATURE SENSOR PHASED INTO PRODUCTION TO CORRECT AN ENGINE MISFIRE CONDITION THAT MAY BE EXPERIENCED WITH CERTAIN E-TECH ENGINES. *TT |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.