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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> Body & Frame >> Frames, Subframes & Crossmembers >> Frame And Underbody >> Repair Instructions >> Frame Replacement - Rear >> Installation Procedure

Installation Procedure

    Fig 1: Identifying Rear Frame Assembly
    GM801998Courtesy of GENERAL MOTORS CORP.
  1. With the aid from an assistant, position and secure the new rear frame (2) on the engine support fixture.
  2. Install the following components to the rear frame assembly.
    3. IMPORTANT: The rear coil springs need to be indexed into the lower spring insulators prior to assembly.
  3. Index the rear coil springs to the spring insulators.
    4. IMPORTANT: Ensure the intermediate brake cable is clear of the front frame to body mount prior to securing the frame bolts.
  4. Ensure the intermediate park brake cable is positioned over left side frame assembly on the left side.
  5. Lower the vehicle to the frame.
    6. Fig 2: Identifying Coils Springs & Upper Spring Insulator
    GM725835Courtesy of GENERAL MOTORS CORP.
  6. Position the coil springs (3) to the upper spring insulator (2).
    7. Fig 3: Removing & Installing Frame-To-Bolt Mounting Bolts & Washers
    GM708181Courtesy of GENERAL MOTORS CORP.
  7. Index the rear side frame mounts to the rear locator sleeves (1) located on the body.
  8. Lower the vehicle until the frame mounts contact the body rail.
    9. NOTE: Refer toFastener Notice in Cautions and Notices.
  9. Install the rear frame washers (3) and anchor bolts (4).

    Tighten: 

    • Tighten the front bolts to 265 N.m (195 lb ft).
    • Tighten the rear bolts to 191 N.m (141 lb ft).

  10. Raise the vehicle.
  11. Remove the J 39580  from under the vehicle. See Special Tools and Equipment .
    12. Fig 4: Supporting Control Arm Using Support Fixture
    GM708375Courtesy of GENERAL MOTORS CORP.
  12. Install the support fixture (3) in order to raise the lower control arms for ease of lower shock bolt installation (2).
  13. Install the lower shock bolt.

    Tighten:  Tighten the bolt (2) to 150 N.m (111 lb ft).

  14. Repeat the above step for the other side.
  15. Remove the support fixture (3).
    16. Fig 5: Identifying Park Brake Cable At Rear Park Brake Cable Connector
    GM751494Courtesy of GENERAL MOTORS CORP.
  16. Connect the intermediate park brake cable (2) to the rear park brake cable connector (1).
    17. Fig 6: View Of Park Brake Cable
    GM492729Courtesy of GENERAL MOTORS CORP.
  17. Connect the intermediate park brake cable (2) to the front park brake cable connector.
    18. Fig 7: View Of Intermediate Brake Hose Assembly & Mounting Nuts
    GM833132Courtesy of GENERAL MOTORS CORP.
  18. Position the brake pipe bracket (2) to the body studs.
  19. Install the brake pipe bracket retaining nuts (1)

    Tighten:  Tighten the nuts to 10 N.m (89 lb in).

    20. Fig 8: Identifying Rear Brake Pipe Lines
    GM833131Courtesy of GENERAL MOTORS CORP.
  20. Connect the rear brake lines (1) at the forward rear wheelhouse.

    Tighten:  Tighten the lines to 15 N.m (11 lb ft).

    21. Fig 9: View Of Rear Wheel Speed Sensor Electrical Connectors
    GM767222Courtesy of GENERAL MOTORS CORP.
  21. Connect the rear wheel speed sensor electrical connectors.
  22. Secure the electrical harness retainer clips to the park brake cables.
  23. Install the rear wheels. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  24. Lower the vehicle.
  25. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Manual)Hydraulic Brake System Bleeding (Pressure) in Hydraulic Brakes.
  26. Align the vehicle. Refer to Measuring Wheel Alignment in Wheel Alignment.
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