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: Driver assistance are shown. Show all
| KC-686 | 2022-06-07. Service bulletin. VEHICLE SPEED CONTROL; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). (Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP) |
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| KC-383 | 2022-02-04. Service bulletin. LANE DEPARTURE. Mack Chassis - Equipped With Bendix Fusion, With Or Without Lane Departure Warning ( LDWS ) - Diagnostic Trouble Code ( DTC ) SPN 70 FMI 9, Bendix Code 64 With Possible "Lane Departure Warning Malfunction" Message - US17 And Newer |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.