how to fix the whining noise from the differential in my Ram 1500 DT (2019-Present)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Safety gear: gloves and safety glasses.
• Ensure the vehicle is on a level surface, and secure it with wheel chocks and jack stands.

2. Drain Differential Fluid

• Locate the differential drain plug.
• Using a socket wrench, remove the drain plug and allow the fluid to drain completely into a drain pan.
• Inspect the fluid for metal shavings or debris, which may indicate internal wear.

3. Remove Differential Cover

• Remove the bolts securing the differential cover using a socket set.
• Carefully pry the cover off the housing to avoid damaging the gasket.
• Inspect the condition of the ring and pinion gears, looking for signs of wear or damage.

4. Replace Bearings and Gears (if necessary)

• If wear is found, remove the differential carrier by unbolting it from the housing.
• Replace the bearings with new ones, ensuring to use the proper installation tools.
• If the gears are damaged, replace them with compatible OEM gears, ensuring proper gear mesh and backlash settings are achieved.

5. Reassemble Differential

• Clean the differential housing and cover mating surfaces.
• Apply a new gasket or sealant to the differential cover.
• Reinstall the differential cover and tighten bolts to the manufacturer’s specified torque.

6. Refill Differential Fluid

• Reinstall the drain plug securely.
• Fill the differential with the manufacturer-recommended fluid type until it reaches the fill level.

7. Final Inspection

• Check for any leaks around the differential cover and drain plug after refilling the fluid.
• Test drive the vehicle to verify that the whining noise has been resolved.