Fluid · Front DifferentialFront Differentialfor 1990 GMC Sierra 2500 7.4L V8 454 · 4WDFluid Type75W-90 GL-5 Gear OilCapacity1.5qtOther fluid systems on this vehicleBrake FluidCoolant18 qtEngine Oil8.5 qtPower Steering1 qtRear Differential2 qtTransfer Case2.5 qtAutomatic Transmission11.5 qtWasher Fluid3.5 qt📝 Suggest a correction to this fluid spec