What type of gear oil is used in front differential of a 1994 GMC Jimmy?

The front differential of a 1994 GMC Jimmy typically requires a gear oil with a viscosity of 80W-90 or 75W-90, depending on the specific driving conditions and climate. It's also important to use a gear oil that meets the API GL-5 specification, which is suitable for hypoid gears commonly found in differentials. Always check the owner's manual for any specific requirements or recommendations for your vehicle.