Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Apply a light coat of axle lubricant, GM P/N 12378557 or equivalent meeting GM Specification 9986207, to the lip of the pinion seal.
Install the new seal using the J 45710.

Fig 1: Install New Seal Using J 45710
Courtesy of GENERAL MOTORS CORP.
Install the pinion yoke.
NOTE: Refer to PINION FLANGE/YOKE INSTALLATION NOTICE .
Seat the pinion yoke onto the pinion shaft by tapping it with a soft-faced hammer until a few pinion shaft threads show through the yoke.

Fig 2: Install Pinion Yoke
Courtesy of GENERAL MOTORS CORP.
Install the washer.

Fig 3: Washer
Courtesy of GENERAL MOTORS CORP.
Install the new pinion nut

Fig 4: Install New Pinion Nut
Courtesy of GENERAL MOTORS CORP.
Install the J 8614-01 onto the pinion yoke as shown.
NOTE: Refer to FASTENER NOTICE .
Tighten the pinion nut while holding the J 8614-01.
Tighten

Tighten the pinion nut to 370 N.m (273 lb ft).
Install the propeller shaft to the rear axle pinion yoke. Refer to PROPELLER SHAFT REPLACEMENT-ONE PIECE .
Inspect and add axle lubricant to the axle housing, if necessary. Refer to Lubricant Level Inspection - Rear Drive Axle (8.6 Inch Axle) or Lubricant Level Inspection - Rear Drive Axle (9.5, 10.5 Inch Axle) or Lubricant Level Inspection - Rear Drive Axle (11.5 Inch Axle) or Lubricant Level Inspection - Rear Drive Axle (9.75 Inch Axle) .
Lower the vehicle.

Fig 5: Tighten Pinion Yoke Using J 8614-01

Courtesy of GENERAL MOTORS CORP.