2008 Denali drivetrain questions for maintenance

[Ponchonutty]

Alright. I am going to go through the entire drivetrain on my Denali. It has the 6.2 with the AWD. How do I know exactly what lube I need for the diffs? I looked at Amsoil's website but they have 50 different combo's listed and unsure what exactly it is I need. I assume the transfer case uses the same as teh tranny? thx guys.

 

[Goodinblack]

Look in the manual. Under fluid specs and capacities

I used valvoline synthetic gear lube recently with modifier added already.

Rear axle needs a friction modifier additive if you have limited slip

 

[Ponchonutty]

OK. I will check the book then. Wasn't sure if they have a "generic" book that just had all of it in there or not. I would assume I have limited slip since I have AWD.

 

[ECLIPSEJ24]

I used BG product 75w 110 with the additive added already