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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 30 (FRONT DRIVE AXLE)REPAIR INSTRUCTIONSDIFFERENTIAL CARRIER ASSEMBLY BUSHING REPLACEMENTINSTALLATION PROCEDURE
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Installation Procedure

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Installation Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Special Tools J 21474-18, Thrust Bearing, J 36616-2, J 36616-1, & Forcing Screw
    GM892851Courtesy of GENERAL MOTORS CORP.
  1. Install the lower differential carrier assembly bushing by performing the following steps:
    1. Install the J 21474-18 (1), the thrust bearing (2), the J 36616-2 (3), the J 36616-1 (4), and the forcing screw (5) as shown.
    2. While holding the forcing screw, slowly tighten the J 21474-18 until the bushing has stopped against the step on the bushing and is centered within the differential carrier assembly bushing bore.
    2. Fig 2: View Of Special Tools J 21474-18, Thrust Bearing, J 36616-2, J 36616-1, & Forcing Screw
    GM893253Courtesy of GENERAL MOTORS CORP.
  2. Install the upper differential carrier assembly bushing by performing the following steps:
    1. Install the J 21474-18 (1), the thrust bearing (2), the J 36616-2 (3), the J 36616-1 (4), and the forcing screw (5) as shown.
    2. While holding the forcing screw, slowly tighten the J 21474-18 until the bushing has stopped against the step on the bushing and is centered within the differential carrier assembly bushing bore.
  3. Install the differential carrier assembly. Refer to Differential Carrier Assembly Replacement (1500 4WD)  or Differential Carrier Assembly Replacement (2500 4WD) .
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.