Installation Procedure

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Using the J-44414 installer, install a new pinion oil seal.
Apply sealant to the splines of the pinion yoke. Adhesives, Fluids, Lubricants, and Sealers
CAUTION:
Refer to Pinion Flange/Yoke Installation Caution .

NOTE:
Align the reference marks and install the drive pinion yoke.

Using a soft faced hammer, install the drive flange (1) onto the pinion shaft until a few treads show through the drive flange (1).
Install the washer (2) and the nut (3).
NOTE:
If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.

Using and holding the J-8614-01 holder/remover, tighten the pinion nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearing.
NOTE:
Compare this measurement with the rotating torque prior to removing the drive flange.

Using an inch-pound torque wrench (1), tighten the nut in small increments, as needed, until the rotating torque is 0.40 - 0.57 N.m (3 - 5 lb in) greater than the rotating torque recorded during removal.

NOTE:

Recheck the rotating torque and adjust if necessary.

Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated.
Install the propeller shaft in the vehicle. Propeller Shaft Replacement (With M5U) , or Propeller Shaft Replacement (With MYD)

NOTE:

Step 9 is for those vehicles that are equipped with the 10.5 inch axle.

Install the axle shafts. Rear Axle Shaft and Gasket Replacement

NOTE:

Step 10 is for those vehicles that are equipped with the 8.6 or 9.5 inch axle.

Install the rear brake rotors. Rear Brake Rotor Replacement (JH6) , or Rear Brake Rotor Replacement (JH9)
Install the tire and wheel assemblies. Tire and Wheel Removal and Installation (Without Dual Rear Wheels) , or Tire and Wheel Removal and Installation (With Dual Rear Wheels)
Inspect and add axle lubricant to the axle housing, if necessary. Rear Axle Lubricant Level Inspection (10.5 Inch Axle) , or Rear Axle Lubricant Level Inspection (9.5 Inch Axle)
Remove the support and lower the vehicle.