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Service bulletin 032503

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 id10001867
Published by NHTSA2003-07-23
Manufacturer's number032503
Manufacturer's date2003-03-25
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

ANTI-LOCK BRAKE SYSTEM (ABS) TELLTALE LIGHT BEING CONSTANTLY ILLUMINATED WITH A DIAGNOSTIC TROUBLE CODE C0550 BEING STORED. *TT *JB

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

Electrical system

Trouble codes named

C0550

Vehicles listed
CHEVROLET SILVERADO2003
GMC SIERRA2003

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

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