Soon ill be flushing the radiator, changing the oil,changing the trans fluid, changing the fluid in the front and rear diff, and the transfercase.
Ive of course flushed a radiator, changed oil, and changed the trans fluid and filter.
Now this is my first 4x4 so ive never done a front diff or transfercase.
Any helpful imput?

Thanks, Brian

 

Pretty straight forward there is a drain and fill plug on both of them, just drain it out and fill until it runs out the fill hole.

 

You may not have a drain plug on the front diff. In which case you will need a little siphon pump to pull the old fluid out. The same pump will make it easier to put new fluid back in.

 

okay i figured it was straightforward. and i assume the fluids are in the manual.
thanks guys

 

80w90 GL-5 or 75w90 Synthetic fluid for both the front and rear differentials.

As far as the transfer case goes:

• Dexron III ATF if you have the three button 4wd switch on the dash
• GM Autotrak II if you have the four button 4wd switch on the dash with Auto4wd option

 

75w90 syn and Dexron III ATF it is.
Thanks.

 

No problem! Let us know how it goes!