Installation Procedure

2009 Chevrolet Tahoe Base, 4.8 CSECTION Installation Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Rear Axle Assembly
    GM788488Courtesy of GENERAL MOTORS COMPANY
  1. Install the axle shaft into the rear axle housing, allowing the splines to engage the differential side gear.
  2. Fig 2: C-Lock From Button End Of Axle Shaft
    GM788486Courtesy of GENERAL MOTORS COMPANY
  3. On axles without a locking differential, place the C-lock on the button end of the axle shaft.
  4. On axles with a locking differential, keep the pinion shaft partially withdrawn.
  5. Fig 3: View Of Axle Shaft, Lock & Thrust Block
    GM156412Courtesy of GENERAL MOTORS COMPANY
  6. On axles with a locking differential, place the C-lock (1) on the axle shaft (3) so that the ends are flush with the thrust block (2).
  7. Pull the shaft flange outward in order to seat the C-lock in the differential gear.
  8. Fig 4: View Of Pinion Shaft Locking Bolt
    GM156409Courtesy of GENERAL MOTORS COMPANY
  9. Align the hole in the pinion shaft with the bolt hole in the differential case.
  10. CAUTION:

    Refer to Fastener Caution .

  11. Install the new pinion shaft locking bolt.
    • For the 8.6 inch axle, tighten the pinion shaft locking bolt to 36 N.m (27 lb ft).
    • For the 9.5 LD inch axle, tighten the pinion shaft locking bolt to 50 N.m (37 lb ft).
  12. NOTE:

    End play is the in and out movement of the rear axle shaft. Radial play is the up and own movement in the rear axle shaft.

  13. Check the rear axle shaft end play and the radial play. The rear axle shaft end play should be 0.012 inch per side and the radial play should be 0.002-0.003 inch. If the rear axle shaft is NOT within the specifications, replace any excessively worn parts.
  14. Install the rear axle housing cover and the gasket. Refer to Rear Axle Housing Cover and Gasket Replacement (8.6, 9.5 Inch Axles)Β , Rear Axle Housing Cover and Gasket Replacement (10.5 Inch Axle)Β .
  15. Install the brake caliper mounting bracket. Refer to Rear Brake Caliper Bracket Replacement (1500 Series) , Rear Brake Caliper Bracket Replacement (2500 Series) .
  16. Install the rear wheel speed sensor.
  17. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  18. Fill the rear axle with the proper axle lubricant. Refer to Rear Axle Lubricant Level Inspection (8.6, 9.5 LD Axle)Β , Rear Axle Lubricant Level Inspection (10.5 Inch Axle)Β .
  19. Lower the vehicle.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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