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Service bulletins for the 2021 Mack Granite

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.

225 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Latches and locks are shown. Show all

Bulletins, newest first
KC-2212022-01-06. Service bulletin. LATCHES/LOCKS/LINKAGES. Mack Chassis - Granite 8 Series (GU, GU8, GR, M059, M753, M755) - Hood Guide Backing Plate - Updated Part Information And Installation Procedure;

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.