Service bulletin 3928

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)
Type	Service bulletin
NHTSA id	10020914
Published by NHTSA	2007-01-29
Manufacturer's number	3928
Replaces	3928A
NHTSA component	STEERING

NHTSA's summary

BIND OR SHUDDER ON TURNS. *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

Steering

Vehicles listed
BUICK RAINIER	2004, 2005, 2006, 2007
CHEVROLET TRAILBLAZER	2002, 2003, 2004, 2005, 2006
CHEVROLET TRAILBLAZER 360	2007 (the catalog's model; the bulletin names a series or trim of it)
GMC ENVOY	2002, 2003, 2004, 2005, 2006
GMC ENVOY 360	2007 (the catalog's model; the bulletin names a series or trim of it)
OLDSMOBILE BRAVADA	2002, 2003, 2004
SAAB 9-7X	2005, 2006, 2007

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

Recalls for the same vehicles and component
2005296	2005-10-07. Steering
05V455000	2005-10-05. STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
03-00-91-001I	2023-11-22. Service bulletin. This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing vibration concerns.
15-00-89-004F	2023-09-08. Service bulletin. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
15-00-89-004E	2022-10-11. Service bulletin. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
120232002B	2020-08-10. Service bulletin. This technical bulletin provides a procedure to eliminate a power steering noise due to extremely low temperatures.
PI0800A	2018-05-21. Service bulletin. This preliminary informational bulletin provides a procedure to reprogram the electronic power steering control module for comments regarding a indicator lamp illuminated and DTC C0544 and U0415 set.
PI0671A	2018-05-21. Service bulletin. This preliminary information bulletin provides information for diagnosing a power steering fluid leak at the fluid reservoir.
PI0800A	2018-05-21. Service bulletin. This preliminary informational bulletin provides a procedure to reprogram the electronic power steering control module for comments regarding a indicator lamp illuminated and DTC C0544 and U0415 set.
12-02-32-002A	2018-04-23. Service bulletin. This technical bulletin provides a revision for 12-02-32-002 to add the 2013-2014 model years, add noise as a possible condition and add a Note in the Instructions section.
PIC3278G	2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician the steps needed to diagnose and repair the vehicles that may have unwanted or phantom phone calls. Technician will need to determine what type of call the customer is having that is unwanted. The vehicle may receive an incoming call just like any other phone. Typically the customer will hear the phone ringing in the vehicle. This scenario also includes incoming Bluetooth calls. One type of unwanted call can be made if the key pad is faulty the OnStar system will try to make a blue button call for shorted voltage in the circuits. The OnStar module could have an internal fault and produce a ″Phone Unavailable″ audio message also it may have a Diagnostic Trouble Code U1500 or B1000. Refer to diagnostics for the Diagnostic Trouble Code making sure to follow any applicable Bulletins or Preliminary Information sheets. A “Ready” or “OnStar ready” audio message heard while driving. In some cases it has been found that the customer is inadvertently pressing the ″push to talk″ button on the steering wheel controls. On rare occasions, other issues in the steering column or Steering Wheel Control system may induce this concern.
PIP4404E	2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician vehicles with a slight rough idle. Technician should compare the concern with a like vehicle. If the concern is worse than a like vehicle, technician should follow published Service Information diagnosis and repair as necessary.