GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 DTS 🢒 Engine 🢒 Engine Exhaust 🢒 Exhaust Manifold Replacement - Right Side

Special Tools

J 42640 Steering Column Lock Pin

Removal Procedure

Warning: Refer to Exhaust Service Warning in the Preface section.

Warning: Refer to Protective Goggles and Glove Warning in the Preface section.


    Object Number: 1665457 Size: SH
  1. Remove the connector position assurance (CPA) retainer (3).
  2. Disconnect the engine harness electrical connector (2) from the heated oxygen sensor (HO2S).
  3. Remove the HO2S clip (5) from the secondary air injection (AIR) valve hose bracket.

    4. Caution: The wheels of the vehicle must be straight ahead and the steering column in the LOCK position before disconnecting the steering column or intermediate shaft from the steering gear. Failure to do so will cause the coil assembly in the steering column to become uncentered which will cause damage to the coil assembly.


    Object Number: 333146 Size: SH
  4. Lock the steering column by installing the J 42640 into the underside of the steering column.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  6. Remove the rear exhaust manifold pipe. Refer to Exhaust Manifold Rear Pipe Replacement.
  7. Remove the AIR check valve. Refer to Secondary Air Injection Check Valve Replacement.

    8. Object Number: 1663209 Size: SH
  8. Disconnect the engine harness clip (2) from the steering gear heat shield.

    9. Object Number: 1665450 Size: SH
  9. Disconnect the engine harness clip (3) from the steering gear heat shield.

    10. Object Number: 1670593 Size: SH
  10. Remove the steering gear heat shield bolts.
  11. Remove the steering gear heat shield.

    12. Object Number: 575135 Size: SH
  12. Disconnect the electronic suspension position sensor link ball studs (1) from the lower control arms.

    13. Object Number: 1665092 Size: SH

    Warning: Failure to disconnect the intermediate shaft from the rack and pinion steering gear stub shaft can result in damage to the steering gear or to the intermediate shaft. This damage may cause loss of steering control, which could result in an accident and possible personal injury.

  13. Unsnap and remove the intermediate shaft seal.
  14. Remove the intermediate shaft pinch bolt.
  15. Separate the intermediate shaft from the steering gear.

    16. Object Number: 694208 Size: SH
  16. Support the rear of the frame with a tall screw type jack.

    17. Object Number: 1665303 Size: SH
  17. Remove the 4 rearward engine frame-to-body bolts (1).
  18. Lower the screw type jack approximately 4 cm (1.5 in) allowing the rear of the engine frame to lower.

    19. Object Number: 1670529 Size: SH
  19. Remove the HO2S.

    20. Object Number: 1670474 Size: SH
  20. Remove the exhaust manifold nuts.
  21. Remove the exhaust manifold (2).
  22. Remove and discard the exhaust manifold gasket (1).

Installation Procedure

    Object Number: 1670474 Size: SH
  1. Install a NEW exhaust manifold gasket (1) onto the cylinder head studs.
  2. Install the exhaust manifold (2).

    3. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the exhaust manifold nuts.

    4. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).


    Object Number: 1670529 Size: SH
  4. If reusing the old HO2S, coat the threads with anti-sieze compound, GM P/N 12377953 or equivalent.
  5. Install the HO2S.

    6. Tighten
    Tighten the sensor to 41 N·m (30 lb ft).


    Object Number: 1665303 Size: SH
  6. Raise the engine frame into position.
  7. Install the 4 rearward engine frame-to-body bolts (1).

    8. Tighten
    Tighten the bolts to 191 N·m (141 lb ft).


    Object Number: 694208 Size: SH
  8. Remove the screw type jack.

    9. Object Number: 1665092 Size: SH

    Warning: Failure to disconnect the intermediate shaft from the rack and pinion steering gear stub shaft can result in damage to the steering gear or to the intermediate shaft. This damage may cause loss of steering control, which could result in an accident and possible personal injury.

  9. Connect the intermediate shaft to the steering gear.
  10. Install the intermediate shaft pinch bolt.

    11. Tighten
    Tighten the bolt to 45 N·m (33 lb ft).

  11. Install the intermediate shaft seal.

    12. Object Number: 575135 Size: SH
  12. Connect the electronic suspension position sensor link ball studs (1) to the lower control arms.

    13. Object Number: 1670593 Size: SH
  13. Install the steering gear heat shield.
  14. Install the steering gear heat shield bolts.

    15. Tighten
    Tighten the bolts to 9 N·m (80 lb in).


    Object Number: 1665450 Size: SH
  15. Connect the engine harness clip (3) to the steering gear heat shield.

    16. Object Number: 1663209 Size: SH
  16. Connect the engine harness clip (2) to the steering gear heat shield.
  17. Install the AIR check valve. Refer to Secondary Air Injection Check Valve Replacement.
  18. Install the rear exhaust manifold pipe. Refer to Exhaust Manifold Rear Pipe Replacement.
  19. Lower the vehicle.

    20. Object Number: 333146 Size: SH
  20. Remove the J 42640 from the steering column.

    21. Object Number: 1665457 Size: SH
  21. Connect the engine harness electrical connector (2) to the HO2S.
  22. Install the HO2S clip (5) to the AIR valve hose bracket.
  23. Install the CPA retainer (3).