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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 227 (Propeller Shaft) >> Repair Instructions >> Two-Piece Propeller Shaft Replacement (LF4) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support the vehicle. Lifting and Jacking the Vehicle (ATS)Lifting and Jacking the Vehicle (ATS-V)
  2. Remove the floor panel number 4 cross bar. Floor Panel Number 4 Cross Bar Replacement
  3. Remove the exhaust muffler. Exhaust Muffler Replacement (LF4)
  4. Remove the intermediate body exhaust heat shield. Intermediate Body Exhaust Heat Shield Replacement (Non V-Series)Intermediate Body Exhaust Heat Shield Replacement (V-Series)
  5. Remove the floor panel number 2 cross bar reinforcement. Floor Panel Number 2 Cross Bar Reinforcement Replacement
    6. Fig 1: Propeller Shaft Flange/Transmission Output Flange Relationship Mark
    GM2837969Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    When removing the propeller shaft, do not remove the propeller shaft coupler from the propeller shaft assembly. The only bolts that should be removed are those that mount each coupler to the transmission output flange, and to the rear drive axle input flange. Failure to properly remove the propeller shaft assembly may cause coupler damage, resulting in necessary replacement of the entire propeller shaft.

    NOTE:

    Before removing the propeller shaft from the vehicle, paint or scribe references marks on the transfer case or transmission flange to the propeller shaft and the rear differential drive flange to ensure minimal driveline system imbalance.

  6. Mark (1) the relationship of the propeller shaft flange and the output flange of the transmission.
    7. Fig 2: Propeller Shaft Flange/Rear Wheel Drive Shaft Flange Relationship Mark
    GM2837982Courtesy of GENERAL MOTORS COMPANY
  7. Mark (1) the relationship of the propeller shaft flange and the rear wheel drive shaft flange.
    8. Fig 3: Propeller Shaft Bearing Support Bolts
    GM2837672Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure that the propeller shaft is secured to the hydraulic jack stand.

  8. Support the propeller shaft with a suitable hydraulic jack stand.
  9. Remove the 2 propeller shaft bearing support bolts (1).
    10. Fig 4: Front Propeller Shaft Bolt & Nuts
    GM2837680Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If the bolts or nuts are found to be damaged or are excessively worn, DO NOT reuse. Replace with new.

  10. Remove the 3 front propeller shaft bolts (2) and the nuts (1).
    11. Fig 5: Rear Propeller Shaft Bolt & Nuts
    GM2837681Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If the bolts or nuts are found to be damaged or are excessively worn, DO NOT reuse. Replace with new.

  11. Remove the 3 rear propeller shaft bolts (1) and the nuts (2).
    12. Fig 6: Propeller Shaft Coupling Lubricant Application & Tapping Points
    GM2858904Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Care should be taken not to use sharp or pry tools when separating the propeller shaft coupler from the drive flange. Damage to the coupler could result and replacement of the entire propeller shaft would be required.

    NOTE:

    It may be necessary to apply a small amount of penetrating lubricant or WD-40® to the area shown (1) to aid in separation of the propeller shaft coupling.

  12. If the propeller shaft does not easily separate from the differential, transmission or transfer case, use a rubber mallet to gently tap the locations (1) on the rubber coupling shown above to separate.
    13. Fig 7: Propeller Shaft
    GM2837690Courtesy of GENERAL MOTORS COMPANY
  13. Remove the propeller shaft (1) from the vehicle.
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