Differential Pinion seal

[Mrsharza]

Hi, can someone confirm that’s a leak from the pinion seal. If so, how bad?

Thanks!
*New here to the forum
2007 Tahoe LT 150k

 

[strutaeng]

Yes. It's the only place that can be leaking fluid.

Looks more like seepage, than a leak though...

 

[swathdiver]

Not enough to worry about or go through the process of changing it out. Just make sure the differential is full and clean.

 

[Mrsharza]

Thought so,
Reason I looked… getting a vibrating noise that area.

Happens when stopped, after releasing brake. Definitely sounds like the rear center…

 

[Mrsharza]

My 2007 Tahoe 5.3

 

[B-train]

Thought so,
Reason I looked… getting a vibrating noise that area.

Happens when stopped, after releasing brake. Definitely sounds like the rear center…

Pull the driveshaft and inspect both u-joints for free and easy movement. That mileage range is usually the end life for the pinion end u-joint.