would like to read on this bulletin

Squeak, Squeal or Whistle Noise From Front Axle (Replace Intermediate Axle Seal and/or Differential Carrier Seal) #03-04-19-002A - (Sep 14, 2004)
Squeak, Squeal or Whistle Noise From Front Axle (Replace Intermediate Axle Seal and/or Differential Carrier Seal) 2004-2005 Buick Rainier

2002-2005 Chevrolet TrailBlazer 4WD

2002-2005 GMC Envoy 4WD

2002-2004 Oldsmobile Bravada AWD

This bulletin is being revised to add models and model years. Please discard Corporate Bulletin Number 03-04-19-002 (Section 04 - Driveline/Axle).

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1549755&evc=numSrch#ss1-1549755">Condition

Some customers may comment on a high pitched squeal, squeak or whistle noise in the front end of the vehicle. This noise usually occurs once per wheel revolution. This may be more common in cold weather below 5°C (40° F). The noise may be coming from the right front axle intermediate shaft housing outboard seal or the left outer differential carrier seal. For testing purposes, spraying a lubricant on the seal should temporarily reduce the noise. This noise should not be mistaken for a wheel bearing issue.

Cause

A lack of lubrication in the seal may cause this condition.
(http://service.gm.com/servlets/BlobShtml?ShtmlFile=1549755&evc=numSrch#ss2-1549755)

thanks cobra#3747