GM Service Manual Online
For 1990-2009 cars only

Frame Replacement W/L61

Removal Procedure


    Object Number: 1202407  Size: SH
  1. Support the radiator and condenser by looping a rope around each of the 2 tabs of the condenser and tie the rope around the upper tie bar.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Remove the front wheels. Refer to Tire and Wheel Removal and Installation .
  4. Remove the engine splash shield. Refer to Radiator Air Lower Baffle and Deflector Replacement .
  5. Disconnect the lower radiator support bracket to frame bolts and disengage the alignment feature.

  6. Object Number: 1229970  Size: SH
  7. Disconnect the stabilizer link from the stabilizer shaft. Refer to Stabilizer Shaft Link Replacement .

  8. Object Number: 441937  Size: SH
  9. Disconnect the outer tie rods (3) from the steering knuckles (6). Refer to Steering Linkage Outer Tie Rod Replacement .

  10. Object Number: 1229961  Size: SH
  11. Remove the lower control arms. Refer to Lower Control Arm Replacement .

  12. Object Number: 1237949  Size: SH
  13. Remove the intermediate steering shaft to steering gear pinch bolt.
  14. Disconnect the intermediate steering shaft from the steering gear. Note the alignment of the steering shaft to steering gear for installation.

  15. Object Number: 1229805  Size: SH
  16. Remove the front transmission mount through bolt.

  17. Object Number: 1229802  Size: SH
  18. Remove the rear transmission mount through bolt.
  19. Support the frame assembly with a support fixture.

  20. Object Number: 1237962  Size: SH
  21. Remove the rear frame to support brace bolts.

  22. Object Number: 1237966  Size: SH
  23. Remove the frame to body bolts.
  24. Lower the cradle from the vehicle.
  25. When replacing the frame, remove the following components:
  26. • Steering gear--Refer to Steering Gear Replacement .
    • Stabilizer shaft--Refer to Stabilizer Shaft Replacement .

    Object Number: 1229804  Size: SH
    • Rear transmission mount bracket

Installation Procedure

  1. When replacing the frame, install the following components.
  2. • Steering gear--Refer to Steering Gear Replacement .
    • Stabilizer shaft--Refer to Stabilizer Shaft Replacement .

    Object Number: 1229804  Size: SH
    • Rear transmission mount bracket
  3. Raise the cradle to the vehicle.

  4. Object Number: 1237966  Size: SH
  5. Install the frame to body bolts. Hand tighten only.

  6. Object Number: 1237962  Size: SH
  7. Install the rear frame support brace to frame and body bolts. Hand tighten only.
  8. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1236969  Size: SH
  9. Using a drift or suitable alignment tool, align the frame to body through the supplied alignment holes in the rear of the frame.
  10. Tighten

        • Tighten the frame to body bolts to 100 N·m (74 lb ft) plus 90 degrees.
        • Tighten the frame support to body bolts to 100 N·m (74 lb ft).
  11. Remove the support fixture.

  12. Object Number: 1229961  Size: SH
  13. Install the lower control arm. Refer Lower Control Arm Replacement .

  14. Object Number: 441937  Size: SH
  15. Connect the outer tie rods  (3) to the steering knuckle  (6). Refer to Steering Linkage Outer Tie Rod Replacement .

  16. Object Number: 1229970  Size: SH
  17. Connect the stabilizer link to the stabilizer shaft.
  18. Tighten
    Tighten the stabilizer link nut to 65 N·m (48 lb ft).


    Object Number: 1229802  Size: SH
  19. Install the rear transmission mount through bolt. Hand tighten only.

  20. Object Number: 1229805  Size: SH
  21. Install the front transmission mount through bolt. Hand tighten only.
  22. Balance and tighten the powertrain mounts. Refer to Powertrain Mount Balance - Lower Mount .

  23. Object Number: 1237949  Size: SH
  24. Connect the intermediate steering shaft to the steering gear. Locate the shaft as previously noted.
  25. Install the Intermediate steering shaft pinch bolt.
  26. Tighten
    Tighten the bolt to 49 N·m (36 lb ft).

  27. Connect the lower radiator support bracket to frame bolts using the alignment feature.
  28. Tighten
    Tighten the radiator support bracket bolts to 60 N·m (44 lb ft).

  29. Install the engine splash shields. Refer to Radiator Air Lower Baffle and Deflector Replacement .
  30. Install the front wheels. Refer to Tire and Wheel Removal and Installation .
  31. Lower the vehicle.
  32. Remove the radiator and condenser support.

Frame Replacement W/LZ9, LZ4

Removal Procedure


    Object Number: 1202407  Size: SH
  1. Install the engine support fixture. Refer to Engine Support Fixture .
  2. Support the radiator and condenser by looping a rope around each of the 2 tabs of the condenser and tie the rope around the upper tie bar.
  3. Remove the right catalytic converter. Refer to Catalytic Converter Replacement - Right Side .
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the front wheels. Refer to Tire and Wheel Removal and Installation .
  6. Remove the engine splash shield. Refer to Radiator Air Lower Baffle and Deflector Replacement .
  7. Disconnect the lower radiator support bracket to frame bolts and disengage the alignment feature.

  8. Object Number: 1229970  Size: SH
  9. Disconnect the stabilizer link from the stabilizer shaft. Refer to Stabilizer Shaft Link Replacement .

  10. Object Number: 441937  Size: SH
  11. Disconnect the outer tie rods (3) from the steering knuckles (6). Refer to Steering Linkage Outer Tie Rod Replacement .

  12. Object Number: 1229961  Size: SH
  13. Remove the lower control arms from the frame. Refer to Lower Control Arm Replacement .
  14. Support the control arms using mechanics wire. DO NOT separate the ball stud from the knuckle.

  15. Remove the left catalytic converter. Refer to Catalytic Converter Replacement - Left Side .

  16. Object Number: 1237949  Size: SH
  17. Remove the intermediate steering shaft to steering gear pinch bolt.
  18. Disconnect the intermediate steering shaft from the steering gear. Note the alignment of the steering shaft to steering gear for installation.

  19. Object Number: 1229805  Size: SH
  20. Remove the front transmission mount through bolt.

  21. Object Number: 1229802  Size: SH
  22. Remove the rear transmission mount through bolt.

  23. Object Number: 1229798  Size: SH
  24. Remove the frame to side transmission mount bolts.

  25. Object Number: 1229784  Size: SH
  26. Remove the frame to engine mount bolts.
  27. Support the frame assembly with a support fixture.

  28. Object Number: 1237962  Size: SH
  29. Remove the rear frame to support brace bolts.

  30. Object Number: 1237966  Size: SH
  31. Remove the frame to body bolts.
  32. Lower the frame from the vehicle.
  33. Disconnect the heated oxygen sensor wiring harness from the retainer at the rear transmission mount.
  34. When replacing the frame, remove the following components:
  35. • Steering gear--Refer to Steering Gear Replacement .
    • Stabilizer shaft--Refer to Stabilizer Shaft Replacement .
    • Rear transmission mount bracket--Refer to Transmission Rear Mount Replacement .

Installation Procedure

  1. When replacing the frame, install the following components:
  2. • Steering gear--Refer to Steering Gear Replacement .
    • Stabilizer shaft--Refer to Stabilizer Shaft Replacement .
    • Rear transmission mount bracket --Refer to Transmission Rear Mount Replacement .
  3. Raise the frame to the vehicle.
  4. Connect the heated oxygen sensor wiring harness on the retainer at the rear transmission mount.

  5. Object Number: 1237966  Size: SH
  6. Install the frame to body bolts. Hand tighten only.

  7. Object Number: 1237962  Size: SH
  8. Install the rear frame support brace to frame and body bolts. Hand tighten only.
  9. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1236969  Size: SH
  10. Using a drift or suitable alignment tool, align the frame to body through the supplied alignment holes in the rear of the frame.
  11. Tighten

        • Tighten the frame to body bolts to 100 N·m (74 lb ft) plus 90 degrees.
        • Tighten the frame support to body bolts to 100 N·m (74 lb ft).
  12. Remove the support fixture.

  13. Object Number: 1229961  Size: SH
  14. Install the lower control arms to the frame. Refer Lower Control Arm Replacement .

  15. Object Number: 441937  Size: SH
  16. Connect the outer tie rods (3) to the steering knuckles (6). Refer to Steering Linkage Outer Tie Rod Replacement .

  17. Object Number: 1229970  Size: SH
  18. Connect the stabilizer link to the stabilizer shaft. Refer to Stabilizer Shaft Link Replacement .

  19. Object Number: 1229784  Size: SH
  20. Install the frame to engine mount bolts.
  21. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 1229798  Size: SH
  22. Install the frame to side transmission mount bolts.
  23. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 1229802  Size: SH
  24. Install the rear transmission mount through bolt.
  25. Tighten
    Tighten the bolt to 90 N·m (66 lb ft).


    Object Number: 1229805  Size: SH
  26. Install the front transmission mount through bolt.
  27. Tighten
    Tighten the bolt to 90 N·m (66 lb ft).


    Object Number: 1237949  Size: SH
  28. Connect the intermediate steering shaft to the steering gear. Locate the shaft as previously noted.
  29. Install the intermediate steering shaft pinch bolt.
  30. Tighten
    Tighten the bolt to 49 N·m (36 lb ft).

  31. Install the left catalytic converter. Refer to Catalytic Converter Replacement - Left Side .
  32. Connect the lower radiator support bracket to frame bolts using the alignment feature.
  33. Tighten
    Tighten the radiator support bracket bolts to 60 N·m (44 lb ft).

  34. Install the engine splash shields. Refer to Radiator Air Lower Baffle and Deflector Replacement .
  35. Install the front wheels. Refer to Tire and Wheel Removal and Installation .
  36. Lower the vehicle.
  37. Install the right catalytic converter. Refer to Catalytic Converter Replacement - Right Side .
  38. Remove the powertrain support fixture. Refer to Engine Support Fixture .
  39. Remove the radiator and condenser support. Refer to Radiator Support Bracket Replacement .