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Home >> Pontiac >> 2008 >> G8 Base >> Repair and Diagnosis >> Body & Frame >> Frames, Subframes & Crossmembers >> Frame And Underbody >> Repair Instructions >> Rear Frame Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Identifying Rear Frame Wiring Harness To Rear Subframe Side Retaining Clips
    GM1943728Courtesy of GENERAL MOTORS CORP.
  1. Connect the rear frame wiring harness to rear subframe side retaining clips (1).
    2. Fig 2: Identifying Rear Frame Wiring Harness To Rear Subframe Center Retaining Clips
    GM1943727Courtesy of GENERAL MOTORS CORP.
  2. Connect the rear frame wiring harness to rear subframe center retaining clips (1).
    3. Fig 3: View Of Eccentric Washer
    GM1943723Courtesy of GENERAL MOTORS CORP.
  3. Install the I-Link (3) into the rear subframe (4).
    4. IMPORTANT: The eccentric washers (1) must be fitted correctly in terms of their orientation and alignment marks.
    IMPORTANT: The I-Link to rear subframe retaining bolt (2) and NEW nut (5) must not to be fully tightened at this stage.
  4. Install the I-Link to rear subframe retaining bolt (2).
  5. Install the eccentric washer (1) and the NEW nut (5).

    Do not fully tighten at this stage.

    6. Fig 4: View Of Y-Link
    GM1943700Courtesy of GENERAL MOTORS CORP.
  6. Install the Y-Link (5) to the rear subframe.
    7. IMPORTANT: The Y-Link to subframe retaining bolt (3) and nut (4) must not to be fully tightened at this stage.
  7. Install the Y-Link to rear subframe retaining bolt (3) and NEW nut (4).

    Do not fully tighten at this stage.

    8. IMPORTANT: The Y-Link to knuckle retaining bolt (1) and nut (2) must not to be fully tightened at this stage.
  8. Install the Y-Link to knuckle retaining bolt (1) and NEW nut (2).

    Do not fully tighten at this stage.

    9. Fig 5: View Of Upper Control Arm
    GM1943682Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  9. Install the upper control arm (4) into the rear subframe.
  10. Install the upper control arm ball joint bushing to rear subframe retaining bolt (1) and NEW nut (5).

    Tighten:  Tighten the bolt and nut a first pass to 40 N.m (30 lb ft).

    Tighten:  Tighten the bolt and nut a final pass 90 Degrees.

  11. Install the upper control arm to knuckle retaining bolt (3) and NEW nut (2).

    Tighten:  Tighten the bolt and nut a first pass to 60 N.m (44 lb ft).

    Tighten:  Tighten the bolt and nut a second pass an additional 90 degrees.

  12. Install the upper control arm pivot bushing. Refer to Knuckle Replacement .
    13. Fig 6: Identifying Lower Control Arm & Rear Subframe
    GM1943697Courtesy of GENERAL MOTORS CORP.
  13. Install the lower control arm (4) into the rear subframe (3).
    14. IMPORTANT: The eccentric washers (2) must be fitted correctly in terms of their orientation and alignment marks.
    IMPORTANT: Do not fully tighten the lower control arm to rear subframe retaining bolt (1) and nut (5) at this stage.
  14. Install the lower control arm to rear subframe retaining bolt (1).
  15. Install the eccentric washer (2) and the NEW nut (5).

    Do not fully tighten at this stage.

    16. Fig 7: Identifying Rear Strut Assembly & Lower Control Arm
    GM1943680Courtesy of GENERAL MOTORS CORP.
  16. Connect the rear strut assembly (4) to the lower control arm (3).
    17. IMPORTANT: Do not fully tighten the lower control arm to strut assembly retaining bolt (2) and nut (1) at this stage.
  17. Install the lower control arm to strut assembly retaining bolt (2) and NEW nut (1).

    Do not fully tighten at this stage.

  18. Install the rear wheel hub and knuckle assembly. Refer to Knuckle Replacement .
  19. Install the stabilizer shaft. Refer to Stabilizer Shaft Replacement .
  20. Install the stabilizer shaft link. Refer to Stabilizer Shaft Link Replacement .
    21. IMPORTANT: Make sure the intermediate brake cable is clear of the rear frame to body mount prior to securing the frame retaining bolts.
  21. Lower the vehicle to the frame.
  22. Index the rear side frame mounts to the rear locator sleeves located on the body.
  23. Lower the vehicle until the frame mounts contact the body rail.
    24. Fig 8: Identifying Rear Sub Frame To Rear Chassis Rail Retaining Bolts
    GM1943725Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  24. Install the rear sub frame to rear chassis rail retaining bolts.

    Tighten:  Tighten the bolts to 200 N.m (148 lb ft).

  25. Raise the vehicle.
  26. Remove the suitable frame support table from under the vehicle.
    27. Fig 9: View Of Brake Hose & Upper Control Arm Mounted Brake Hose Retaining Bracket
    GM1943688Courtesy of GENERAL MOTORS CORP.
  27. Attach the brake hose (1) from the upper control arm mounted brake hose retaining bracket (5).
    28. Fig 10: Identifying Heavy Mechanic Wire & Brake Caliper
    GM1943711Courtesy of GENERAL MOTORS CORP.
  28. Remove the heavy mechanic's wire, or equivalent support (2) from the brake caliper (1).
    29. Fig 11: Identifying Brake Caliper Anchor Plate To Knuckle Retaining Bolts
    GM1943713Courtesy of GENERAL MOTORS CORP.
    NOTE: Make sure the brake hose is not twisted or kinked after installation. Damage to the hose could result.
  29. Install the brake caliper assembly (2) to the knuckle (3).
    30. NOTE: Refer to Fastener Notice .
  30. Install the NEW brake caliper anchor plate to knuckle retaining bolts (1).

    Tighten:  Tighten the bolts to 110 N.m (81 lb ft).

    31. Fig 12: View Of Rear Park Cable & Rear Knuckle
    GM1943693Courtesy of GENERAL MOTORS CORP.
  31. Install the rear park brake cable (4) into the rear knuckle (3).

    Make sure that the rear park brake cables (4) are properly seated.

    32. IMPORTANT: Attach the rear park brake cable and clevis (1) to the park brake actuator (2) by pivoting the rear park brake cable and clevis (1) rearward using pliers.
  32. Attach the rear park brake cable and clevis (1) to the park brake actuator (2).
    33. Fig 13: Identifying Wheel Speed Sensor Jumper Harness Electrical Connector & Right Hand Rail
    GM1943714Courtesy of GENERAL MOTORS CORP.
  33. Connect the wheel speed sensor jumper harness electrical connector (1).
    34. Fig 14: Identifying Top Strut Assembly To Body Retaining Bolts
    GM1943706Courtesy of GENERAL MOTORS CORP.
  34. Install the top strut assembly to body retaining bolts (1).

    Tighten:  Tighten the bolts to 58 N.m (43 lb ft).

    35. Fig 15: Identifying Wheel Speed Sensor Jumper Harness Electrical Connector & Right Hand Rail
    GM1943714Courtesy of GENERAL MOTORS CORP.
  35. Connect the wheel speed sensor jumper harness electrical connector (1).
  36. Attach the electrical connector (1) to the right hand rail (2).
    37. Fig 16: View Of Outer Cable & Vehicle Underbody Bracket
    GM1943692Courtesy of GENERAL MOTORS CORP.
  37. Install the outer cable (4) to the vehicle underbody bracket (3).

    Make sure that the outer cables (4) are properly seated in the vehicle underbody bracket (3).

    38. IMPORTANT: Wrap a workshop cloth around the rear inner cable (1) to protect it from damage. Using pliers, pull the rear inner cable (1) forward and downwards to install the ball nipple to the front park brake cable and equalizer bracket assembly (2).
  38. Install the rear inner cables (1) to the front park brake cable and equalizer bracket assembly (2).
  39. Install the rear strut assembly. Refer to Strut Replacement .
  40. Install the differential. Refer to Differential Replacement .
  41. Install the drive shafts. Refer to Wheel Drive Shaft Replacement .
  42. Install the propeller shaft. Refer to Propeller Shaft Replacement .
  43. Install the exhaust system. Refer to Exhaust System Replacement (LY7) or Exhaust System Replacement (L98) .
  44. Install the rear wheel. Refer to Tire and Wheel Removal and Installation .
  45. Lower the vehicle to the ground.
  46. Bounce the vehicle several times to settle the suspension.
    47. Fig 17: View Of Lower Control Arm To Subframe Retaining Bolt & Nut With Eccentric Washers
    GM1943696Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The lower control arm to the subframe retaining bolt (1) and nut (2) eccentric washers (3) are used to adjust rear suspension camber.
  47. Align the marks on the eccentric washers (3) with the marks on the subframe.
    48. IMPORTANT: Make sure that the vehicle is positioned on a suitable hoist to load the rear suspension bushes to the correct position.
  48. Tighten the lower control arm to subframe retaining bolt (1) and nut (2).

    Tighten:  Tighten the bolt and nut to 175 N.m (129 lb ft).

    49. Fig 18: Identifying Lower Control Arm To Knuckle Retaining Bolt & Nut
    GM1943699Courtesy of GENERAL MOTORS CORP.
  49. Tighten the lower control arm to knuckle retaining bolt (2) and nut (1).

    Tighten:  Tighten the bolt and nut a first pass to 40 N.m (30 lb ft).

    Tighten:  Tighten the bolt and nut a final pass 120 Degrees.

    50. Fig 19: Identifying Y-Link To Subframe Retaining Bolt & Nut
    GM1943704Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Make sure that the vehicle is positioned on a suitable hoist to load the rear suspension bushes to the correct position.
    NOTE: Refer to Fastener Notice .
  50. Tighten the Y-Link to subframe retaining bolt (2) and NEW nut (1).

    Tighten:  Tighten the bolt and nut to 100 N.m (74 lb ft).

    51. Fig 20: Identifying Y-Link To Knuckle Retaining Bolt & Nut
    GM1943702Courtesy of GENERAL MOTORS CORP.
  51. Tighten the Y-Link to knuckle retaining bolt (2) and NEW nut (1).

    Tighten:  Tighten the bolt and nut a first pass to 40 N.m (30 lb ft).

    Tighten:  Tighten the bolt and nut a final pass 120 Degrees.

    52. Fig 21: View Of Marks On Eccentric Washers
    GM1943723Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Make sure that the vehicle is positioned on a suitable hoist to load the rear suspension bushes to the correct position.
    NOTE: Refer to Fastener Notice .
  52. Align the marks on the eccentric washers (1) with the marks on the subframe (3).
  53. Tighten the I-Link to subframe retaining bolt (2) and NEW nut (4).

    Tighten:  Tighten the bolt and nut to 175 N.m (129 lb ft).

  54. Check the wheel alignment of the vehicle. Refer to Wheel Alignment Measurement .
  55. Correct the wheel alignment of the vehicle, if necessary. Refer to Rear Camber Adjustment and Rear Toe Adjustment .
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