BodarkMan

Hey guys, I’ve got a 2024 Silverado 1500 and I’m trying to get ahead of maintenance on the diffs, but I’m running into a lot of mixed info. Truck setup: Rear: GM SU8 w/ G80 locker, 3.23 gears Front: AAM SU4 What I’m confused about: Gear oil – does it really matter if I stick with ACDelco OEM? I’m seeing the recommended ACDelco fluid isn’t very easy to find (especially for the rear). Are there solid alternatives (amsoil, Valvoline, etc.) that meet spec? If so, what is that spec other than just 75w85 Where are you guys actually buying the OEM fluid? I’m not seeing much availability online (Amazon, etc.), so wondering if dealer is basically the only option. Gaskets: I’ve read the front diff doesn’t use/need a replaceable gasket Does the rear diff cover need a new gasket, or is it RTV from the factory? Service intervals: For relatively mild use (some towing/hauling, nothing extreme), what intervals are you guys actually running for the front and rear diffs? Where are you getting official info? Is everyone just using the GM service manual / SI subscription, or is there another reliable source I’m missing? Appreciate any insight