Axle Oils?

[gustheiceman]

Hello there,
I have a 2002 1500 4x4 LT Suburban it's done 58K, I was wondering if I should be changing the oils in the axles and the gearbox? If I do, what oil should I use in the axles, also the rear axle has a locking diff, although I wondered why the original owner paid extra for a locking diff' when the vehicle is fitted with auto 4WD. Any advice would be appreciated.
PS. Gas prices over here in the UK ...are ready for this? $7.73
Keep Rockin'
Gus

[gustheiceman]

[QUOTE=gustheiceman;177744]Hello there,
I have a 2002 1500 4x4 LT Suburban it's done 58K, I was wondering if I should be changing the oils in the axles and the gearbox? If I do, what oil should I use in the axles, also the rear axle has a locking diff, although I wondered why the original owner paid extra for a locking diff' when the vehicle is fitted with auto 4WD. Any advice would be appreciated.
PS. Gas prices over here in the UK ...are ready for this? $7.73
Keep Rockin'
Gus

[redneckarmyMP]

my 2004 silverado takes 75-90 synthetic gear lube in the axles.
and the transfer case takes the GM autotrack II fluid
i hope this helps you some!