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Service bulletin KC-252

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 id10206140
Published by NHTSA2022-01-06
Manufacturer's numberKC-252
Manufacturer's date2021-12-15
NHTSA componentEXTERIOR LIGHTING; EXTERIOR LIGHTING:HEADLIGHTS:SWITCH; EXTERIOR LIGHTING:HEADLIGHTS:DAYTIME RUNNING LIGHTS:BULBS

NHTSA's summary

Mack Chassis - Daytime Running Lights ( DRL ) Module; Fault Code MID 144 PSID 40 Daytime Running Light Relay - Model Years Prior To 2018

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

Lighting, Headlights

Vehicles listed
MACK MACK1994 to 1999
MACK MACK2001

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