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Service bulletin 3767

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 id10018570
Published by NHTSA2006-01-06
Manufacturer's number3767
Replaces3767A
NHTSA componentSERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT

NHTSA's summary

ABS LIGHT ON WITH DTC C0550 ON MEDIUM DUTY MODELS C65 AND C75. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Brakes, Anti-lock brakes

Trouble codes named

C0550

Vehicles listed
CHEVROLET KODIAK2005
GMC TOPKICK2005

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