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Service bulletin 041602

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 id636549
Published by NHTSA2002-11-10
Manufacturer's number041602
Manufacturer's date2002-04-16
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

SOME CUSTOMERS MAY EXPERIENCE AN SERVICE ENGINE SOON LIGHT WITH THE DIAGNOSTIC TROUBLE CODE P0128 SET. *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.

Trouble codes named

P0128

Vehicles listed
CADILLAC CTS2003

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