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Service bulletin 030420004

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 id10002855
Published by NHTSA2003-09-29
Manufacturer's number030420004
Manufacturer's date2003-06-01
NHTSA componentPOWER TRAIN:AXLE ASSEMBLY

NHTSA's summary

REVISED TORSIONAL BACKLASH REAR AXLE SPECIFICATIONS. *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

Transmission and driveline, Axle

Vehicles listed
CADILLAC CTS2003

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
36712006-02-17. Service bulletin. REAR AXLE PINION SEAL MAY EXPERIENCE A FLUID LEAK CONDITION. *TT UPDATED 04-26-07. *KB
30512004-11-17. Service bulletin. HOWL OR WHINE NOISE FROM THE REAR AXLE ON ACCEL AND/OR DECEL. *TT