4WD Maintenance?

[97Z71]

I have a 97 Sierra 1/2ton 4X4 (Z71 if that matters), it does NOT have the push button 4WD control.

I am nearing 100,000 miles and was wondering what if any maintenance do you recommend?

 

Thanks

[k1500chevy97]

If nothing is wrong with it I would just change out the fluids (transfer case ATF and front diff gear oil) and lube up the 4wd compontets and call it good .

Also with that many miles you might want to give some thought to your 4wd actuator located in the front differential (those go out at the most inconvieniet times    )