Just fill the the rear differential will fuild comes out and your done.
what size truck? 1500,2500,3500?
Where you get your dipstik from
THere is a fill plug located approximately 2\3rd up from bottom. fill differential with Diff oil until level with bottom of the plug.
Ok here is what you do. You fly up to the sun then die. When your body turns to dust it scatters around and then you catch it all in the differential fluid section of a Chevy Tahoe.
till it comes out of the fill hole about a quart
It will, but you want to make sure it's the same gear ratio, which would be determined by the RPO codes on the glove compartment door.
Typically you fill to just below the fill hole, I usually use a smaller Allen wrench to check it. if it is to about the middle of the short end I just leave it. This is usually pretty close to two quarts.
90 W Gear oil
Just fill it until it comes out of the fill hole. It should be around 4 liters so how many quarts that is.
The vent tube could be clogged.
The only place you would use gear oil is in the rear differential and or front differential if it is a 4+4. The differentials have a fill plug.