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Service bulletin KC-221

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10206120
Published by NHTSA2022-01-06
Manufacturer's numberKC-221
Manufacturer's date2021-12-09
NHTSA componentLATCHES/LOCKS/LINKAGES

NHTSA's summary

Mack Chassis - Granite 8 Series (GU, GU8, GR, M059, M753, M755) - Hood Guide Backing Plate - Updated Part Information And Installation Procedure;

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Latches and locks

Vehicles listed
MACK GRANITE (GU)2015 to 2016
MACK GRANITE (GU)2017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
KC-9012020-11-01. Service bulletin. Remote Control Central Door Lock, Programming; Key Fob Cannot Be Programmed Or Does Not Work After Programming - Model Year 2018 And Newer
K100751122018-11-19. Service bulletin. Remote Control Central Door Lock, Programming; Key Fob Cannot Be Programmed Or Does Not Work After Programming - Model Year 2018 And Newer