GM Service Manual Online
For 1990-2009 cars only

Front Frame Replacement 4.6L

Tools Required

J 39580 Engine Support Stand

Removal Procedure

  1. Install the engine support fixture. Refer to Engine Support Fixture.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  3. Remove the front tires and wheels. Refer to Tire and Wheel Removal and Installation.
  4. Remove the stabilizer shaft. Refer to Stabilizer Shaft Replacement.
  5. Remove the bolts retaining the steering gear to the engine frame.
  6. Remove the ball joints from the steering knuckle. Refer to Lower Control Arm Ball Joint Replacement.
  7. Remove the front air deflector. Refer to Front Air Deflector Replacement.
  8. Remove the brake pressure modulator valve and bracket from the frame. Refer to Brake Pressure Modulator Valve Replacement.
  9. Disconnect the ESC sensor links from the lower control arm ball studs.
  10. Remove the secondary air injection pump assembly. Refer to Secondary Air Injection Pump Replacement.

  11. Object Number: 460601  Size: SH
  12. Remove the steering gear heat shield fasteners (1) in order to remove the steering gear heat shield (2) and disconnect the electrical harness retainer that is mounted on the heat shield.
  13. Disconnect the electrical harness from the heat shield.

  14. Object Number: 460600  Size: SH
  15. Remove the brackets (2) retaining the power steering line (1) to the frame.
  16. Remove the retainer (3), retaining the power steering line (4) along the left side of the engine frame.
  17. Using mechanics wire, retain the steering gear to the body.

  18. Object Number: 333761  Size: SH
  19. Lower vehicle until the engine frame rests on the J 39580 or suitable jack stands.

  20. Object Number: 105510  Size: SH
  21. Remove the fastener retaining the front engine mount to the engine frame.

  22. Object Number: 154973  Size: SH
  23. Remove the fasteners retaining the rear transaxle mount (1) to the engine frame.

  24. Object Number: 105376  Size: SH
  25. Remove the engine frame insulator bolts (3) retaining the engine frame (2) to the vehicle.
  26. Raise vehicle away from engine frame.
  27. Remove the control arms. Refer to Lower Control Arm Replacement.

Installation Procedure

  1. Install the control arms. Refer to Lower Control Arm Replacement.
  2. Lower the vehicle onto the engine frame.

  3. Object Number: 105376  Size: SH
  4. Using dowel pins in the alignment holes (1), align the engine frame (2) with the vehicle.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the engine frame insulator retainer bolts in order to retain the engine frame to the vehicle.
  7. Tighten
    Tighten the retainers to 181 N·m (133 lb ft).

  8. Check the front wheel alignment. Refer to Wheel Alignment Specifications.

  9. Object Number: 333761  Size: SH
  10. Raise the vehicle away from the jack stands supporting the engine frame.

  11. Object Number: 154973  Size: SH
  12. Install the fasteners in order to retain the rear transaxle mount (1) to the bracket.
  13. Tighten
    Tighten the retainers to 50 N·m (37 lb ft).


    Object Number: 105510  Size: SH
  14. Install the fastener in order to retain the front engine mount to the engine frame.
  15. Tighten
    Tighten the fastener to 70 N·m (52 lb ft).

  16. Install the fasteners in order to retain the steering gear to the engine frame.
  17. Tighten
    Tighten the fastener to 95 N·m (70 lb ft).


    Object Number: 460600  Size: SH
  18. Install the bracket (2) to retain the power steering line (1) to the engine frame.
  19. Install the clips (3) retaining power steering line (4) along engine frame rail.
  20. Connect the wiring harness to the heat shield.

  21. Object Number: 460601  Size: SH
  22. Install the steering gear heat shield (2) to the vehicle.
  23. Tighten
    Tighten the retainers to 9 N·m (80 lb in).

  24. Install the secondary air injection pump to the vehicle. Refer to Secondary Air Injection Pump Replacement.
  25. Install the brake pressure modulator valve. Refer to Brake Pressure Modulator Valve Replacement.
  26. Install the ESC sensor links to the lower control arm ball studs.
  27. Install the front air deflector. Refer to Front Air Deflector Replacement.
  28. Install the ball joints to the steering knuckle. Refer to Lower Control Arm Ball Joint Replacement.
  29. Install the front tires and wheels. Refer to Tire and Wheel Removal and Installation.
  30. Install the stabilizer shaft. Refer to Stabilizer Shaft Replacement.
  31. Lower the vehicle.
  32. Remove the engine support fixture.
  33. Check the front wheel alignment. Refer to Wheel Alignment Specifications.