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  1. Pcpurvis

    Rear end oil change

    I have a 02 Yukon SLE 5.7L, 4 speed automatic transmission. Do I need to add limited slip additive to the gear oil? Also I want to verify the gear oil is SAE 75W90 Synthetic (GM spec 9986115) VIN: 1GKEC13Z42R299363 Thanks In advance

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