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Appearance Of Excessive Grease At Front Output Shaft Seal - keywords axle leak

Subject:Appearance of Excessive Grease at Front Output Shaft Seal

Models:2007 Buick Rainier
2007 Chevrolet Trailblazer, Trailblazer SS
2007 GMC Envoy
2007 Saab 9-7x
Equipped with AWD or 4WD



The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

During Pre-Delivery Inspection, or performing other repairs on a hoist, the presence of a yellow/brown grease may be noted at the front axle output shaft seals. This grease may change color over time or may change to a wet appearance. See picture.


Object Number: 1864574  Size: SH

Recommendation/Instructions:

No repairs are needed for this condition. If the quantity of lubricant appears excessive, it can be wiped off. This lubricant was implemented into production starting the week of 9/18/06 and is being used to assure that the installation of the output shaft does not fold over or damage the lip of the seal. A folded over seal lip can create the high-pitched squeak noise referenced in PIP3718B.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.