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Service bulletin SB-10-04-20-001E

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 id10052200
Published by NHTSA2013-06-25
Manufacturer's numberSB-10-04-20-001E
Manufacturer's date2013-04-01
NHTSA componentPOWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT

NHTSA's summary

CADILLAC: REAR AXLE IS MAKING A CHATTER NOISE DURING TURNING. MAY ALSO MAKE A CLUNKING SOUND DURING TURNING AS WELL. *KB

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, Differential

Vehicles listed
CADILLAC CTS2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
CADILLAC SRX2004, 2005, 2006, 2007, 2008, 2009
CADILLAC STS2005, 2006, 2007, 2008, 2009, 2010

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
10-04-20-001F2017-08-15. Service bulletin. This technical bulletin provides a procedure to replace the rear differential fluid if the rear axle has a clunk or chatter noise on turns.
PIC-49862016-08-16. Service bulletin. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE CONDITION IS A NORMAL OPERATING CHARACTERISTIC OF THEIR VEHICLE. A CUSTOMER MAY COMMENT THAT THEY FEEL A STEERING BIND CONDITION WHEN THE CAR IS IN REVERSE, OR DRIVING FORWARD AND THE STEERING WHEEL IS TURNED AT OR NEAR THE FULL-LOCK POSITION.
PI-03502011-06-08. Service bulletin. GM: THERE IS A GEAR WHINE FROM THE REAR WHEN DRIVING 30-60MPH. *RM UPDATED ON 6/15/2011. *KB UPDATED 8/1/11. *PE UPDATED 3/12/12. *PE
SB-102012010-09-29. Service bulletin. CADILLAC: UPDATE FOR INVENTORY AND CUSTOMER VEHICLES PROPSHAFT BOLTS INCOMPLETE HEAT TREATMENT-EXPIRES WITH BASE WARRANTY. PROVIDES SERVICE PROCEDURE TO REPLACE THE PROPSHAFT BOLTS ON CERTAIN MODEL YEAR VEHICLES. *PE
072712008-01-09. Service bulletin. LOOSE REAR DIFFERENTIAL BOLT - NOISE ON CERTAIN 2008 CADILLAC CTS. *NJ