GM Cadillac Deville_Fleetwood_ELD_Seville 1990-1998

Control Arms/Links

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REMOVAL & INSTALLATION



Catera

NOTE
Some special tools required to perform this repair procedure.

J 6627-A Tie rod/wheel stud puller
 
J 42066 Rear hub holding tool
 
J 42089 Steering linkage installer
 


  1. Raise and safely support the vehicle securely.
  2.  
  3. Ensure that the fastening bolts for the rear axle support flange remain accessible.
  4.  



Click image to see an enlarged view

Fig. Bolt location for the rear axle support flange. Remove these bolts and lower the rear assembly

  1. Remove the tire and wheel assembly.
  2.  
  3. Use special tool J 42066 or equivalent to counter hold the rear wheel hub.
  4.  
  5. Remove the drive shaft bolts.
  6.  


NOTE
Suspend the drive shaft upward. DO NOT allow the drive shaft to hang freely. Do not suspend the drive shaft from the spring. The spring will be removed in a later step.

  1. Remove the drive shaft from the rear wheel hub flange.
  2.  
  3. Dislodge the brake pipe from the lower control arm to allow for brake caliper movement.
  4.  



Click image to see an enlarged view

Fig. Remove the brake hose from the retaining clip

  1. Suspend the rear brake caliper to prevent damage to the hose.
  2.  



Click image to see an enlarged view

Fig. Remove the brake caliper and suspend it

  1. Take off the rear brake disc rotor. It may be necessary to back off the parking brake adjustment to remove the brake disc rotor.
  2.  
  3. Uncouple the parking brake cable from the actuator bracket.
    1. Remove the following parts when replacing the rear axle lower control arm:

      The rear wheel hub and flange.
       
      The wheel bearing .
       

    2.  

  4.  
  5. Remove the brake backing plate.
  6.  
  7. Unhook the exhaust system at the rubber body mounts.
  8.  
  9. Remove the rear outer tie rod nut.
  10.  



Click image to see an enlarged view

Fig. Remove the tie rod nut and remove the outer tie rod from the rear control arm

  1. Use the J 6627-A to remove the rear outer tie rod from the rear axle control arm.
  2.  
  3. Remove the stabilizer shaft link connection at the rear axle lower control arm.
  4.  
  5. Support the rear cradle at the rear differential.
  6.  
  7. Scribe a reference mark on the vehicle body around the perimeter of the rear axle cradle mount to ensure proper re-installation.
  8.  
  9. Remove the rear axle cradle mount bolts to the vehicle body.
  10.  



Click image to see an enlarged view

Fig. Remove the inboard rear axle lower control arm bolts


NOTE
Support the lower control arm when removing the shock absorber lower mount bolt.

  1. Remove the lower shock absorber mount bolt.
  2.  
  3. Remove the lower rear cradle to allow for rear spring removal. Remove the rear spring.
  4.  



Click image to see an enlarged view

Fig. Removing the rear spring


WARNING
Ensure the rear differential stays adequately supported. Ensure that the method of support will not be disrupted by partial lowering of the rear axle cradle.

  1. Support the rear lower control arm.
  2.  
  3. Remove the underbody heat shield.
  4.  
  5. Remove the propeller shaft center bearing bracket bolts, the rear support flange bolts, and the rear support bushing bolt.
  6.  
  7. Lower the control arm to allow access to the outboard lower control arm bolt.
  8.  
  9. Remove the inboard and outboard lower control arm bolts. Drop the rear axle lower control arm.
  10.  

To install:

  1. Install the inboard and outboard rear lower control arm bolts.
  2.  
  3. Tighten the bolts to 74 ft. lbs. (100 Nm).
  4.  
  5. Raise the rear lower control arm into position to allow for support bushing and to allow for flange bolt alignment.
  6.  
  7. Install the rear axle support bushing bolt to a loose position.
    1. Tighten the rear axle support bushing bolt to 92 ft. lbs. (125 Nm).
    2.  
    3. Tighten the rear support flange bolts to 48 ft. lbs. (65 Nm).
    4.  

  8.  
  9. Remove the support from the rear lower control arm.
  10.  
  11. Position the rear cradle to enable the propeller shaft center bearing bracket installation.
  12.  
  13. Install the propeller shaft center bearing bracket bolts. Tighten to 15 ft. lbs. (20 Nm).
  14.  
  15. Position and secure the heat shield. Tighten the nuts to 18 inch lbs. (2 Nm)
  16.  
  17. Mount the rear spring and raise the rear axle cradle into position.
  18.  
  19. Align the cradle mounts to the reference marks previously scribed during the removal procedure.
    1. Tighten the rear axle cradle mount to the vehicle body bolts to 48 ft. lbs. (65 Nm).
    2.  

  20.  
  21. Remove the support fixture from the rear differential.
  22.  
  23. Support the rear lower control arm to allow for the shock absorber lower mount bolt installation.
  24.  
  25. Install the shock absorber lower mount bolt and tighten to 81 ft. lbs. (110 Nm).
  26.  
  27. Remove the rear lower control arm support.
  28.  
  29. Install the stabilizer shaft link connection at the rear axle lower control arm.
  30.  
  31. Install the rear outer tie rod to the rear axle control arm. Install the J 42089 to the outer tie rod ball stud and tighten the J 42089 to 22 ft. lbs. (30 Nm), to allow the ball stud taper to seat. Remove the J 42089 from the outer tie rod ball stud.
  32.  
  33. Use a new self-locking tie rod nut and tighten to 44 ft. lbs. (60 Nm).
  34.  
  35. Mount the exhaust system at the rubber body mounts.
  36.  
  37. Install the brake backing plate, if previously removed.
  38.  
  39. Install the following parts, if previously removed.
    1. The wheel bearing.
    2.  
    3. The rear wheel hub and flange.
    4.  

  40.  
  41. Route the parking brake cable through the bracket in the rear lower control arm.
  42.  
  43. Install the rear brake disc rotor. Tighten the set screw to 35 ft. lbs. (4 Nm).
  44.  
  45. Adjust the parking brake.
  46.  
  47. Install the rear brake caliper.
  48.  
  49. Install the brake pipe to the lower control arm and secure it with the retaining clip.
  50.  

Deville and Fleetwood
  1. Raise and safely support the vehicle.
  2.  
  3. Remove the wheel and tire assembly.
  4.  
  5. Remove the height sensor link from the right control arm and/or the parking brake cable retaining clip from the left control arm.
  6.  
  7. Remove the suspension adjustment link retaining nut and separate the link assembly from the control arm.
  8.  
  9. Remove the coil spring.
  10.  
  11. Remove the cotter pin and nut from the ball joint stud. Turn the nut over and install with the flat portion facing upward. Do not tighten the nut.
  12.  
  13. Use tool J-34505 or equivalent, on 1990 vehicles or tool J-36226 or equivalent, on 1991-93 vehicles, to separate the knuckle from the ball joint. Remove the nut from the ball joint stud.
  14.  
  15. Remove the control arm.
  16.  



Click image to see an enlarged view

Fig. The lower control arm mounting

To install:

  1. Position the control arm ball joint stud in the knuckle and install a new nut.
  2.  
  3. On 1990-91 vehicles, tighten the nut to 88 inch lbs. (10 Nm), then tighten an additional 2 / 3 turn.
  4.  
  5. On 1992-93 vehicles, tighten the nut to 88 inch lbs. (10 Nm), then tighten an additional 4 flats of the nut; the torque should be 40 ft. lbs. (55 Nm) minimum. On 1992-93 vehicles with heavy duty chassis and RPO J55 brake option, tighten the nut 2 1 / 2 flats; the torque should be 99 ft. lbs. (135 Nm) minimum.
  6.  


NOTE
It may be necessary to partially load the ball joint to keep the ball stud from rotating while the nut is tightened.

  1. Install a new cotter pin. If the hole in the ball stud does not align with the slot in the nut, tighten the nut to allow cotter pin installation. NEVER loosen the nut to align the hole and the slot.
  2.  
  3. Install the coil spring.
  4.  
  5. Attach the adjustment link to the control arm with the nut. Tighten the nut to 63 ft. lbs. (85 Nm).
  6.  
  7. Install the height sensor link to the right control arm and/or the parking brake cable retaining clip to the left control arm.
  8.  
  9. Install the wheel and tire assembly and lower the vehicle.
  10.  
  11. After the vehicle has been lowered and is resting on the wheels at normal trim height, tighten the control arm nuts to 85 ft. lbs. (115 Nm) and the stabilizer bar link bolt to 13 ft. lbs. (17 Nm).
  12.  


WARNING
The control arm nuts must be tightened with the wheels on the ground and the vehicle at normal trim height. Failure to do so may adversely affect ride and handling.

  1. Lubricate the ball joint and inner link joint with suitable chassis lubricant.
  2.  

1990-92 Eldorado and Seville
  1. Raise and safely support the vehicle.
  2.  
  3. Remove the wheel and tire assembly.
  4.  
  5. If disassembling the left control arm, disconnect the electronic level control height sensor link.
  6.  
  7. If equipped with a stabilizer bar, remove the stabilizer bar mounting bolt at the strut.
  8.  
  9. Reinstall 2 lug nuts to hold the disc brake rotor on the hub and bearing assembly.
  10.  
  11. Remove the rear brake caliper as follows:
    1. Loosen the parking brake cable at the adjuster.
    2.  
    3. Lift up on the end of the cable spring to free the end of the cable from the lever.
    4.  
    5. Remove the bolt and washer attaching the cable support bracket to the caliper.
    6.  
    7. Remove the caliper mounting bracket bolts and suspend the caliper in the wheelwell with wire. Do not disconnect the brake hose or allow the caliper to hang by the brake hose.
    8.  

  12.  
  13. Loosen, but do not remove, the knuckle pivot bolt on the outer end of the control arm. Support the outer end of the control arm with a suitable jack or jackstand to slightly compress the spring.
  14.  


CAUTION
The jack/jackstand must be strong enough to support the weight of the vehicle. It must also be securely positioned or personal injury may result.

  1. Detach the strut electrical connector and remove the mounting nut, retainer and upper insulator. Slowly lower the jack or remove the jackstand to relieve the spring pressure.
  2.  
  3. Compress the strut by hand and remove the lower insulator. Detach the wheel speed sensor connector.
  4.  
  5. While supporting the knuckle, remove the knuckle pivot bolt and remove the knuckle, strut, hub and bearing and rotor from the vehicle as an assembly.
  6.  
  7. Remove both inner control arm bolts and remove the control arm from the vehicle.
  8.  

To install:

  1. Position the control arm in the vehicle and install both inner control arm bolts. Do not tighten the bolts at this time.
  2.  
  3. Position the assembled knuckle, strut, hub and bearing and rotor assembly in the control arm and install the knuckle pivot bolt. Do not tighten the bolt at this time.
  4.  
  5. Attach the wheel speed sensor connector.
  6.  
  7. Install the lower strut insulator and position the strut in the suspension support assembly.
  8.  
  9. Position a jack or jackstand under the outer end of the lower control arm to slightly compress the spring.
  10.  


CAUTION
The jack/jackstand must be strong enough to support the weight of the vehicle. It must also be securely positioned or personal injury may result.

  1. Install the upper strut insulator, retainer, and nut. Tighten the upper strut nut to 65 ft. lbs. (88 Nm), the knuckle pivot bolt to 59 ft. lbs. (80 Nm), and the inner control arm bolts to 66ft. lbs. (90 Nm).
  2.  
  3. Attach the electrical connector at the top of the strut. Remove the jack or jackstand.
  4.  
  5. If equipped, install the stabilizer bar mounting bolt and tighten to 43 ft. lbs. (58 Nm).
  6.  
  7. Remove the 2 lug nuts that were installed to retain the rotor.
  8.  
  9. Install the caliper with new mounting bracket bolts. Tighten the mounting bracket bolts to 83 ft. lbs. (113 Nm). Install the parking brake cable support bracket and tighten the bolt to 32 ft. lbs. (43 Nm).
  10.  
  11. Lift up on the end of the cable spring clip and work the end of the parking brake cable into the notch on the lever. Adjust the parking brake.
  12.  
  13. If installing the left control arm, connect the electronic level control height sensor link.
  14.  
  15. Install the wheel and tire assembly and lower the vehicle. Check the rear wheel alignment.
  16.  



Click image to see an enlarged view

Fig. Control arm installation-1990-92 Eldorado and Seville

1993-98 Eldorado and Seville
LOwer CONTROL ARM
  1. Raise and safely support the vehicle so that the control arm hangs free.
  2.  
  3. Remove the wheel and tire assembly.
  4.  
  5. Support the inner end of the lower control arm with a suitable jack. Position the jack to securely hold the control arm.
  6.  
  7. Disconnect the stabilizer bar and shock absorber from the lower control arm.
  8.  
  9. Remove the inner lower control arm nuts and bolts, then slowly lower the control arm to relieve the spring pressure.
  10.  
  11. Pull the lower control arm down and remove the coil spring.
  12.  
  13. Remove the lower control arm outer bolt and remove the lower control arm.
  14.  



Click image to see an enlarged view

Fig. Lower control arm installation-1993-98 Eldorado and Seville

To install:

  1. Position the lower control arm in the vehicle and install the outer bolt and nut. Tighten the nut to 75 ft. lbs. (102 Nm).
  2.  
  3. Install the coil spring and insulators.
  4.  


NOTE
To ensure the spring is installed in the proper position, rest the spring (without insulators) on a flat surface prior to installation. The spring will stand up straight when resting on its lower end, but will lean or tip over when resting on its top end.

  1. Raise the inner end of the lower control arm with the jack to slightly compress the coil spring. Install the inner lower control arm nuts and bolts.
  2.  
  3. Connect the shock absorber and stabilizer link to the lower control arm.
  4.  
  5. Position the jack under the outer end of the lower control arm. Raise the jack until the suspension is in the normal ride height position.
  6.  
  7. With the suspension in the normal ride height position, tighten the stabilizer link lower nut to 44 ft. lbs. (60 Nm), the shock absorber lower nut to 75 ft. lbs. (102 Nm) and the lower control arm inner nuts to 75 ft. lbs. (102 Nm).
  8.  


NOTE
The inner control arm nuts must be tightened with the suspension in the normal ride height position to reduce wind up in the bushings.

  1. Install the wheel and tire assembly and lower the vehicle. Check the rear wheel alignment.
  2.  

UPPER CONTROL ARM
  1. Raise and safely support the vehicle.
  2.  
  3. Remove the wheel and tire assembly.
  4.  
  5. If equipped with 4.9L engine, remove the electronic level control height sensor link.
  6.  
  7. If equipped with 4.6L engine, remove the road sensing suspension position sensor and bracket from the shock tower.
  8.  
  9. Remove the inner and outer control arm bolts. Raise the control arm up over the shock tower and remove it from the vehicle.
  10.  

To install:



Click image to see an enlarged view

Fig. Upper control arm installation-1993-98 Eldorado and Seville

  1. Lower the control arm over the shock tower and position it in the vehicle. Install the inner and outer control arm bolts.
  2.  
  3. Position a suitable jack under the outer end of the lower control arm. Raise the suspension with the jack until it is in the normal ride height position, then tighten the upper control arm inner and outer nuts to 42 ft. lbs. (57 Nm).
  4.  


WARNING
The inner control arm nuts must be tightened with the suspension in the normal ride height position to reduce wind up in the bushings.

  1. If equipped with 4.6L engine, install the road sensing suspension position sensor and bracket to the shock tower.
  2.  
  3. If equipped with 4.9L engine, install the electronic level control height sensor link.
  4.  
  5. Install the wheel and tire assembly and lower the vehicle.
  6.  

1994-98 Deville
lower CONTROL ARM
  1. Raise and safely support the vehicle securely.
  2.  
  3. Remove the tire and wheel assembly.
  4.  
  5. Support the inboard end of the lower control arm with a transmission jack. Position the brackets on the jack to securely hold the control arm.
  6.  
  7. Disconnect the stabilizer link lower attachment.
  8.  
  9. Unbolt the shock absorber lower attachment.
  10.  
  11. Remove the inboard lower control arm bolts and nuts.
  12.  
  13. Slowly lower transmission jack to relieve spring pressure.
  14.  
  15. Pull the lower control arm down to remove the spring.
  16.  
  17. Remove the lower control arm outboard bolt and the control arm.
  18.  



Click image to see an enlarged view

Fig. This diagram of the rear suspension shows the removal of the steering knuckle to access the upper and lower control arms

To install:

  1. Position the control arm in the vehicle and install the outboard control arm bolt and nut.
    1. Tighten the lower control arm outer nut to 75 ft. lbs. (102 Nm).
    2.  

  2.  
  3. Install the spring and insulators.
  4.  


NOTE
To insure proper orientation of the spring, rest the spring (without insulators) on a flat surface. The spring will stand up straight when resting on its lower end, but will lean or tip when resting on its top end.

  1. Raise the transmission jack under the inboard end of the lower control arm to slightly compress the spring.
  2.  
  3. Insert the inboard lower control arm bolts and nuts.
  4.  
  5. Attach the shock absorber lower attachment.
  6.  
  7. Install the stabilizer link lower attachment.
  8.  
  9. Remove the transmission jack and place it under outboard end of the lower control arm to bring the suspension to its design position. Inner control arm nuts must be tightened in the design position to reduce wind up in the bushings.
    1. Tighten the stabilizer link lower nut to 44 ft. lbs. (60 Nm).
    2.  
    3. Tighten the shock absorber lower nut to 75 ft. lbs. (102 Nm).
    4.  
    5. Tighten the lower control arm inner nuts to 75 ft. lbs. (102 Nm).
    6.  

  10.  
  11. Install the wheel and tire.
  12.  


NOTE
A rear wheel alignment is necessary whenever the inner lower control arm fasteners have been loosened.

UPPER CONTROL ARM
  1. Raise and safely support the vehicle securely.
  2.  
  3. Remove the wheel and tire assembly.
  4.  
  5. Disconnect the electronic level control height sensor link, on the vehicles with the 4.9L engine.
  6.  
  7. Disconnect the road sensing suspension position sensor and bracket from the shock tower on the vehicles with the 4.6L engine.
  8.  
  9. Remove the inner and outer control arm bolts.
  10.  
  11. Lift the control arm up over the shock tower to remove it from the vehicle.
  12.  

To install:

  1. Place the control arm over the shock tower to install it in the vehicle.
  2.  
  3. Install the inner and outer control arm bolts. Place a screw jack under the outboard end of the lower control arm to bring the suspension to design position. The inner control arm nuts must be tightened in the design position to reduce wind up in the bushings.
    1. Tighten the upper control arm inner and outer nuts to 42 ft. lbs. (57 Nm).
    2.  

  4.  
  5. Connect the road sensing suspension position sensor bracket and sensor on the vehicles with the 4.6L engine.
  6.  
  7. Connect the electronic level control height sensor link on the vehicles with the 4.9L engine.
  8.  
  9. Install the wheel and tire assembly.
  10.  
  11. Lower the vehicle.
  12.  

 
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