Front differential

[Tatman48]

08 yukox xl 6,2 denali. I recently did my oil pickup tube o-ring, and after removing front diff i checked fluid and noticed it was low. so I topped it off to fill hole threads. after driving it past week. I noticed I have diff fluid blowing out of breather hose up into engine bay. does anyone know the cause of that? I used proper fluid and proper level and what not.

 

[915_Tahoe]

was the truck properly leveled when added or not

 

[Tatman48]

was the truck properly leveled when added or not

Absolutely,

 

[Rocket Man]

It normally only does that when it’s overfilled. There’s no other reason I know of. My 02 owners manual states to fill it (cold) to 1/2 “ below the filler hole and fill it (hot) to the bottom of the filler hole. What exactly does your owners manual state?

 

[randeez]

filled to the hole is over filled on awd front diff

iirc 1/2" below is full

@swathdiver

 

[HiHoeSilver]

Agreed. Just venting out the extra. Especially if you filled it cold.

 

[Tatman48]

Yeah I filled it cold and it was totally level...

 

[Rocket Man]

Yeah I filled it cold and it was totally level...

Well then it self- adjusted the level lmao. You’re good to go!

 

[Tatman48]

Lol thanks... Yeah next is wheel bearings, CV shafts, rotors and pads. I also need to probably replace fluid in transfer case. Not sure if it was ever done.

 

[swathdiver]

Lol thanks... Yeah next is wheel bearings, CV shafts, rotors and pads. I also need to probably replace fluid in transfer case. Not sure if it was ever done.

When you get all the fluids changed in the transfer case and differentials she'll run so much smoother. Mine was like a young bronc trying to run in two different directions until we changed all the fluids down there, almost time to again.