Probably not the best timing on my part to see if my new to me 95 Tahoe's 4x4 works 
but here's where I am at. Over the weekend dropped trans pan and replaced fluid/filter and shift solenoids and at the same time checked fluid levels in the center transfercase and front "diff"/gearbox.
•Center transfercase was full, slowly backed the drain plug out and the fluid that seeped out was nice and clean.
•Pulled fill plug from the top of the front diff/gearbox, stuck my finger in there and could not feel any fluid at all. 1.5QT of 80W90 later, it starts to seep out the hole and I can feel the fluid level with my finger. I'm not sure how long it has been like this, I have driven the truck about 5-600 miles and have never activated the 4x4.
Here is how I went to engage 4x4:
•Slow to 1-2mph
•Shift truck to neutral (N)
•Pull 4x4 lever down to 4H
•Shift truck to drive (D)
The video below is the gear whurrr/buzz I hear after going through the steps above.
•Drive the truck and there is a speed sensitive buzz/whurr while driving.
•ABS kicking in as I come to a stop 0:14 sec mark
•Once I start going again, buzz/whurrr is gone
At no point is the 4x4 engaged, verified this by turning my wheel and looking out the window while sitting on 1-2" of packed snow/ice.
Thoughts!?
https://www.youtube.com/watch?feature=player_embedded&v=Ve3KPEnYg7o
but here's where I am at. Over the weekend dropped trans pan and replaced fluid/filter and shift solenoids and at the same time checked fluid levels in the center transfercase and front "diff"/gearbox.•Center transfercase was full, slowly backed the drain plug out and the fluid that seeped out was nice and clean.
•Pulled fill plug from the top of the front diff/gearbox, stuck my finger in there and could not feel any fluid at all. 1.5QT of 80W90 later, it starts to seep out the hole and I can feel the fluid level with my finger. I'm not sure how long it has been like this, I have driven the truck about 5-600 miles and have never activated the 4x4.
Here is how I went to engage 4x4:
•Slow to 1-2mph
•Shift truck to neutral (N)
•Pull 4x4 lever down to 4H
•Shift truck to drive (D)
The video below is the gear whurrr/buzz I hear after going through the steps above.
•Drive the truck and there is a speed sensitive buzz/whurr while driving.
•ABS kicking in as I come to a stop 0:14 sec mark
•Once I start going again, buzz/whurrr is gone
At no point is the 4x4 engaged, verified this by turning my wheel and looking out the window while sitting on 1-2" of packed snow/ice.
Thoughts!?
https://www.youtube.com/watch?feature=player_embedded&v=Ve3KPEnYg7o
