Service bulletins for the 2021 Mack Anthem
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.
227 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Turbocharger or supercharger are shown. Show all
| CBR-2078 202308 | 2023-09-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. CBR: Turbo-Compound Engines - DTC P024400- Turbocharger Wastegate Actuator Range/Performance - US21+OBD20 ToUS21+OBD22 Emissions |
|---|---|
| KC-2078 | 2022-11-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Turbo-Compound Engines - DTC P024400 - Turbocharger Wastegate Actuator Range/Performance - US21+OBD20 To US21+OBD22 Emissions |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.