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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1120 (Propeller Shaft) >> Repair Instructions >> Rear Propeller Shaft Replacement (RWD) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using a clean shop towel clean the following:
    • The differential flange centering pin
    • The transmission flange centering pin
    • The front propeller shaft centering bushing
    • The rear propeller shaft centering bushing
  2. Apply a small amount of lubricant GM P/N 1051344 (Canadian P/N 993037), or equivalent, to the front and rear propeller shaft centering bushings.
    3. Fig 1: View Of Propeller Shaft Coupler-To-Differential Flange Bolts, Nuts & Washers
    GM1236095Courtesy of GENERAL MOTORS CORP.
  3. Inspect the propeller shaft to flange nuts (4), bolts (6) and washers (5). Replace if damaged or worn.
  4. Install the rear propeller shaft coupler (2) to the differential flange (3).
  5. Rest the support bearing on the support device.
    6. IMPORTANT: If reusing the propeller shaft-to-flange nuts and bolts, to ensure proper adhesion and fastener retention, the threads must be free of debris prior to the application of threadlocker.
  6. Thoroughly clean the threads using denatured alcohol, or equivalent, and allow to dry. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the propeller shaft to the flange bolt. Ensure that there are no gaps in the threadlocker along the length of the filled area of the bolt. Allow the threadlocker to cure approximately 10 minutes before installation.
  7. Install the propeller shaft coupler-to-differential flange washers (5) to the propeller shaft coupler-to-differential flange bolts (6).
  8. Install the propeller shaft coupler-to-differential flange bolts (6) and washers (5) to the differential flange (3) and propeller shaft coupler (2).
    9. NOTE: Refer to Fastener Notice .
  9. Install the propeller shaft coupler-to-differential flange nuts (4).

    Tighten:  Tighten the propeller shaft coupler-to-differential flange bolts and nuts to 85 N.m (63 lb ft).

    10. Fig 2: View Of Front Propeller Shaft, Bolts, Nuts & Washers
    GM1236097Courtesy of GENERAL MOTORS CORP.
  10. Push the front propeller shaft (3) to the rear of the vehicle and install the propeller shaft coupler (2) to the transmission flange (1).
    11. IMPORTANT: If reusing the propeller shaft-to-flange nuts and bolts, to ensure proper adhesion and fastener retention, the threads must be free of debris prior to the application of threadlocker.
  11. Thoroughly clean the threads using denatured alcohol, or equivalent, and allow to dry. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the propeller shaft to the flange bolt. Ensure that there are no gaps in the threadlocker along the length of the filled area of the bolt. Allow the threadlocker to cure approximately 10 minutes before installation.
  12. Install the front propeller shaft coupler-to-transmission flange bolts (6) to the transmission flange (1) and propeller shaft coupler (2).
  13. Install the propeller shaft coupler-to-transmission flange washers (5) and nuts (4).

    Tighten:  Tighten the propeller shaft coupler-to-transmission flange bolts and nuts to 85 N.m (63 lb ft).

    14. Fig 3: View Of Vehicle Underbody Bolts
    GM1392391Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Ensure that the shim packs on the support bearing are installed in their original positions.
  14. Install the center support bearing to the vehicle underbody.

    Raise the support device in order to hold the support bearing in position.

  15. Install the center support bearing bolts (2) to the studs on the vehicle underbody.

    Tighten:  Tighten the support bearing bolts to 50 N.m (37 lb ft).

  16. Remove the support device from under the support bearing.
  17. Install the exhaust system. Refer to Exhaust System Replacement (With LY7 and LLT) or Exhaust System Replacement (With LP1) .
  18. Lower the vehicle.
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