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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 501 (FRONT SUSPENSION SYSTEM)REPAIR INSTRUCTIONSFRONT COIL SPRINGS REPLACEMENTINSTALLATION PROCEDURE
1999 GMC Forward Control 5.7 R, Automatic

Installation Procedure

1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation Procedure
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the front coil spring and the insulators on the lower control arm.

    Ensure that front coil spring covers all or part of one inspection drain hole. The other hole must be partly or completely uncovered. Rotate coil spring as necessary.

    Fig 1: Installing Front Coil Spring & Insulators On Lower Control Arm
    G01467713Courtesy of GENERAL MOTORS CORP.
  2. Support the control arm using J 23028-01  .
  3. Position the coil spring and insulator in the upper spring seat on the frame.
  4. Raise the lower control arm using J 23028-01  .
  5. Install the lower control arm to the frame.
    Fig 2: Raising Lower Control Arm
    G01467714Courtesy of GENERAL MOTORS CORP.
  6. In order to maintain adequate steering linkage clearance, install the bolts in the direction shown.
  7. Install the lower control arm front pivot bolt and the new nut.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  8. Install the lower control arm rear pivot bolt and the new nut.

    Tighten 

    1. 8.1 Tighten the lower control arm pivot bolts nuts with the front suspension loaded.
    2. 8.2 Tighten the lower control arm front bolt to 115 N.m (85 lb ft).
    3. 8.3 Tighten the lower control arm rear bolt to 98 N.m (72 lb ft).
  9. Remove the J 23028-01  .
  10. Install the shock absorber. Refer to SHOCK ABSORBER REPLACEMENT (RWD)  or SHOCK ABSORBER REPLACEMENT (4WD) .
  11. Install the stabilizer shaft link to the lower control arm. Refer to STABILIZER SHAFT LINK REPLACEMENT (RWD)  or STABILIZER SHAFT LINK REPLACEMENT (4WD) .
  12. Check the front wheel alignment. Refer to WHEEL ALIGNMENT SPECIFICATIONS in Wheel Alignment.
    Fig 3: Installing Lower Control Arm To Frame
    G01467715Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.