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Contents Wiring diagrams Section: Suspension Front All sections

Front Suspension System Chevrolet Colorado I

Suspension Front 8 illustrations ~4384 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Anchor Torsion Bar to Lower Control Arm Bolts80 N.m59 lb ft
Ball Joint to Control Arm Nuts - Lower 2WD60 N.m44 lb ft
Ball Joint to Control Arm Nuts - Lower 4WD and 2WD Z7164 N.m47 lb ft
Ball Joint to Control Arm Nuts - Upper 2WD16 N.m12 lb ft
Ball Joint to Control Arm Nuts - Upper 4WD and 2WD Z7147 N.m35 lb ft
Front Brake Rotor to Front Wheel Hub Bolt
Initial Torque20 N.m15 lb ft
Final Torque110 N.m81 lb ft
Hub and Bearing Assembly to Steering Knuckle Bolts110 N.m81 lb ft
Lower Control Arm Ball Joint Stud Nut138 N.m102 lb ft
Lower Control Arm to Frame Bolts Front - 4WD165 N.m122 lb ft
Lower Control Arm to Frame Bolts Rear - 4WD180 N.m133 lb ft
Lower Control Arm to Frame Nuts - 2WD155 N.m114 lb ft
Shock Absorber Tenon Nut - 2WD20 N.m15 lb ft
Shock Absorber Tenon Nut - 4WD24 N.m18 lb ft
Shock Absorber to Lower Control Arm Nut - 4WD70 N.m52 lb ft
Shock Absorber to Lower Control Arm Nut - 2WD110 N.m81 lb ft
Spring/Shock Assembly to Frame Nuts27 N.m20 lb ft
Stabilizer Shaft Insulator Clamp Bolts50 N.m37 lb ft
Stabilizer Shaft Link Nuts44 N.m32 lb ft
Upper Control Arm Ball Joint Stud Nut100 N.m74 lb ft
Upper Control Arm to Frame Bolts - 2WD160 N.m118 lb ft
Upper Control Arm to Frame Nuts - 4WD and 2WD Z71155 N.m114 lb ft
Wheel Speed Sensor Mounting Bracket Bolt20 N.m15 lb ft

Fastener Tightening Specifications

Scheme 1

Scheme 1: Stabilizer Shaft Replacement (Z71)
Scheme 1: Stabilizer Shaft Replacement (Z71)
CalloutComponent Name
Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the tires and wheels. Refer to Tire and Wheel Removal and Installation . Remove the stabilizer shaft bushings and clamps. Refer to Stabilizer Shaft Insulator Replacement
1Stabilizer Shaft Procedure: Separate the stabilizer shaft from the stabilizer shaft link. Refer to Stabilizer Shaft Link Replacement (ZQ8, Z85) or Stabilizer Shaft Link Replacement (Z71) . Tip: When removing the stabilizer shaft, it maybe necessary to rotate the stabilizer shaft down to clear the outer tie rod end and wheel drive shaft.

Stabilizer Shaft Replacement (Z71)

Scheme 2

Scheme 2: Stabilizer Shaft Replacement (ZQ8, Z85)
Scheme 2: Stabilizer Shaft Replacement (ZQ8, Z85)
CalloutComponent Name
Preliminary Procedure Raise and support the vehcile. Refer to Lifting and Jacking the Vehicle Remove the tire and wheels. Refer to Tire and Wheel Removal and Installation Remove the stabilizer shaft bushing and clamps. Refer to Stabilizer Shaft Insulator Replacement .
1Stabilizer Shaft Procedure: Separate the stabilizer shaft from the stabilizer shaft link. Refer to Stabilizer Shaft Link Replacement (ZQ8, Z85) or Stabilizer Shaft Link Replacement (Z71) .

Stabilizer Shaft Replacement (ZQ8, Z85)

Removal Procedure

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the tire and wheel. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  3. Using the proper size wrench, hold the link ball stud while removing the link nut.
  4. Remove the retaining nut from the stabilizer shaft and the lower control arm.
  5. Remove the stabilizer link from the vehicle.

Installation Procedure

  1. Install the stabilizer shaft link on the lower control arm and stabilizer shaft.
  2. Hand tighten the stabilizer shaft link nuts
  3. Using the proper size wrench to hold the link ball joint, tighten the link nut. Tighten: Tighten the link nut to 44 N.m (32 lb ft).
  4. Install the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation)
  5. Remove the support and lower the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  3. Remove the link nut (1) at the lower control arm.
  4. Using the proper size wrench to hold the link ball stud, remove the link nut (2) at the stabilizer shaft.
  5. Remove the stabilizer shaft link from the lower control arm and stabilizer shaft.
  1. Install the stabilizer shaft link into the lower control arm and the stabilizer shaft.
  2. Hand tighten the lower link nut (1) at the lower control arm.
  3. Hand tighten the link nut at the stabilizer shaft (2).
  4. Using the proper size wrench to hold the link ball stud, tighten the link nut. Tighten: Tighten the link ball stud nut to 44 N.m (32 lb ft).
  5. Install the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation)
  6. Remove the support and lower the vehicle.

Scheme 3

Scheme 3: Stabilizer Shaft Insulator Replacement
Scheme 3: Stabilizer Shaft Insulator Replacement
CalloutComponent Name
Preliminary Procedure: Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Stabilizer Shaft Bushing Clamp Bolt (Qty: 2) NOTE: Refer to Fastener Notice . Tighten: 50N.m (37 lb ft).
2Stabilizer Shaft Bushing Clamp
3Stabilizer Shaft Bushing Tip: When installing the bushing, ensure that the slit in the bushing is facing the front of the vehicle.
NOTE
Refer to Fastener Notice .

Stabilizer Shaft Insulator Replacement

Tools Required

J-42188-B Ball Joint Separator. See Special Tools .

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  3. Support the lower control arm with a suitable jack stand.
  4. Disconnect the front brake hose from the upper control arm. Refer to «Front Brake Hose Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#hydraulic-brake-system) .
  5. Remove the wheel speed sensor bracket bolt.
  6. Disconnect the wheel speed sensor brackets.
  7. Remove the nut from the upper ball joint. Discard the nut.
  8. Disconnect the ball joint from the steering knuckle using the J-42188-B . See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  9. Remove the ball joint nuts and bolts from the upper control arm. Discard the nuts and bolts.
  10. Remove the ball joint from the upper control arm.
  1. Install the ball joint to the upper control arm.
  2. Install the replacement bolts to the upper control arm.
  3. Install the nuts to the bolts. Tighten: Tighten the nuts to 16 N.m (12 lb ft).
  4. Connect the ball joint to the steering knuckle.
  5. Install the new nut to the upper ball joint. Tighten: Tighten the nuts to 100 N.m (74 lb ft).
  6. Connect the wheel speed sensor brackets.
  7. Install the wheel speed sensor bracket bolt. Tighten: Tighten the nut to 20 N.m (15 lb ft).
  8. Connect the front brake hose to the upper control arm. Refer to «Front Brake Hose Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#hydraulic-brake-system) .
  9. Remove the support from the lower control arm.
  10. Remove the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  11. Lower the vehicle.
  12. Verify the wheel alignment. Refer to «Wheel Alignment Specifications»(/chevrolet/colorado/i-2004-2012/remont/wheel-alignment/#wheel-alignment-system__wheel-alignment-specifications) .

J-42188-B Ball Joint Separator. See Special Tools .

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  3. Support the lower control arm with a suitable jack stand.
  4. Disconnect the front brake hose from the upper control arm. Refer to «Front Brake Hose Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#hydraulic-brake-system) .
  5. Remove the wheel speed sensor bracket bolt.
  6. Disconnect the wheel speed sensor brackets.
  7. Disconnect the upper control arm from the ball stud by removing the retention nuts. Discard the nuts.
  8. Remove the nut from the upper ball joint. Discard the nut.
  9. Disconnect the ball joint from the steering knuckle using the J-42188-B . See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  10. Remove the ball joint from the steering knuckle.
  1. Install the ball joint to the steering knuckle.
  2. Install the new nut to the upper ball joint. Tighten: Tighten the nuts to 75 N.m (55 lb ft).
  3. Connect the upper control arm to the ball stud by installing the retention nuts. Tighten: Tighten the nut to 47 N.m (35 lb ft).
  4. Connect the wheel speed sensor brackets.
  5. Install the wheel speed sensor bracket bolt. Tighten: Tighten the nut to 20 N.m (15 lb ft).
  6. Connect the front brake hose to the upper control arm. Refer to «Front Brake Hose Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#hydraulic-brake-system) .
  7. Install the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  8. Remove the lower control arm support.
  9. Lower the vehicle.
  10. Verify the wheel alignment. Refer to «Wheel Alignment Specifications»(/chevrolet/colorado/i-2004-2012/remont/wheel-alignment/#wheel-alignment-system__wheel-alignment-specifications) .
  1. Remove the steering knuckle. Refer to «Steering Knuckle Replacement»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  2. Remove the ball joint nuts and bolts from the lower control arm. Discard the nuts and bolts.
  3. Remove the ball joint from the lower control arm.
  1. Install the ball joint to the lower control arm.
  2. Install the new ball joint nuts and bolts to the lower control arm. Tighten: Tighten the nuts to 60 N.m (44 lb ft).
  3. Install the steering knuckle. Refer to «Steering Knuckle Replacement»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  4. Verify the wheel alignment. Refer to «Wheel Alignment Specifications»(/chevrolet/colorado/i-2004-2012/remont/wheel-alignment/#wheel-alignment-system__wheel-alignment-specifications) .
  1. Remove the steering knuckle. Refer to «Steering Knuckle Replacement»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  2. Remove the ball joint nuts and bolts from the lower control arm. Discard the nuts and bolts.
  3. Remove the ball joint from the lower control arm.
  1. Install the ball joint to the upper control arm.
  2. Install the new ball joint nuts and bolts to the lower control arm. Tighten: Tighten the nuts to 64 N.m (47 lb ft).
  3. Install the steering knuckle. Refer to «Steering Knuckle Replacement»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  4. Verify the wheel alignment. Refer to «Wheel Alignment Specifications»(/chevrolet/colorado/i-2004-2012/remont/wheel-alignment/#wheel-alignment-system__wheel-alignment-specifications) .
CAUTIONRefer to Brake Dust Caution .
CAUTIONRefer to ABS Component Handling Caution .
IMPORTANTThe wheel hub and speed sensor are serviced as an assembly. The are not service as individual items.
  1. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the front brake caliper. Refer to «Brake Caliper Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#disc-brake-system) .
  3. Remove the antilock brake system (ABS) speed sensor wiring harness from the upper control arm.
  4. Remove the front retaining bolt for the speed sensor bracket at the upper control arm.
  5. Remove the speed senor bracket from the upper control arm.
  6. Remove the speed sensor electrical connector from the body.
  7. Using white or bright colored paint, mark the location of the speed sensor wiring harness to the steering knuckle.
  8. To ensure the ease of removal, bundle speed sensor wiring harness so not to have it entangled in any of the suspension components.
  9. Remove the steering knuckle assembly. Refer to «Steering Knuckle Replacement»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  10. Remove the mounting bolts for the wheel bearing/hub, brake rotor assembly.
  11. Remove the wheel bearing/hub, brake rotor assembly from the steering knuckle.
  12. Remove the mounting bolt from the wheel bearing/hub, to the brake rotor.
  13. Remove the wheel bearing/hub from the brake rotor.
  14. Clean the contact area between the wheel bearing/hub and the brake rotor.
  1. Position the wheel bearing/hub assembly on the brake rotor.
  2. Install the mounting bolts from the wheel bearing/hub assembly to the brake rotor.
  3. Tighten the bolts in crisscross pattern. Tighten: Tighten the mounting bolts to 20 N.m (15 lb ft).
  4. Install the backing plate to the wheel bearing/hub, brake rotor assembly.
  5. Install the steering knuckle assembly. Refer to «Steering Knuckle Replacement»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  6. Install the wheel bearing/hub, brake rotor assembly in the steering knuckle.
  7. Align the wheel speed sensor wiring harness with the reference mark on the steering knuckle.
  8. Install the wheel bearing/hub, brake rotor mounting bolts. Tighten: Tighten the mounting bolts to 125 N.m (92 lb ft).
  9. Install the brake caliper mounting bracket to the steering knuckle.
  10. Install the mounting bolts for the brake caliper mounting bracket. Tighten: Tighten the mounting bolts to 175 N.m (129 lb ft).
  11. Position a large screwdriver or pry bar in the cooling fins of the brake rotor and the brake caliper mounting bracket.
  12. Tighten the mounting bolts for the brake rotor in sequence.
  13. Using a torque wrench, tighten the mounting bolts. Tighten: Tighten the mounting bolts to 110 N.m (81 lb ft).
  14. Install the brake caliper assembly. Refer to «Brake Caliper Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#disc-brake-system) .
  15. Remove the tape from the speed sensor wiring harness.
  16. Install the wheel speed sensor wiring harness bracket to the upper control arm.
  17. Install the front retaining bolt for the speed sensor wiring harness. Tighten: Tighten to retaining bolt to 20 N.m (14 lb ft).
  18. Install the speed sensor wiring harness retainers in the upper control arm.
  19. Reconnect the wheel speed sensor electrical connector.
  20. Install the wheel speed sensor to the body.
  21. Lower the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  3. Support the lower control arm with a suitable jack.
  4. Remove the brake caliper assembly and relocate to the side. Refer to «Brake Caliper Bracket Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#disc-brake-system) .
  5. Separate the front wheel drive shaft from the steering knuckle. Refer to «Wheel Drive Shaft Replacement»(/chevrolet/colorado/i-2004-2012/remont/axle-shafts/#wheel-drive-shafts) .
  6. Remove the speed senor wiring harness from the retaining clips on the upper control arm and frame.
  7. Remove the outer tie rod end from the knuckle. Refer to «Rack and Pinion Outer Tie Rod End Replacement»(/chevrolet/colorado/i-2004-2012/remont/manual-power-steering/#power-steering-system) .
  8. Separate the upper ball joint from the knuckle. Refer to «Upper Control Arm Ball Joint Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) or «Upper Control Arm Ball Joint Replacement (4WD, 2WD Z71)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  9. Separate the lower ball joint from the knuckle. Refer to «Lower Control Arm Ball Joint Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) or «Lower Control Arm Ball Joint Replacement (4WD, 2WD Z71)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  10. Remove the knuckle from the upper and lower control arms.
  11. Remove the wheel hub and bearing assembly from the knuckle. Refer to «Wheel Hub/Speed Sensor Replacement»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  1. Install the wheel hub and bearing assembly onto the knuckle. Refer to «Wheel Hub/Speed Sensor Replacement»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  2. Install the lower control arm/ball joint into the knuckle. Refer to «Lower Control Arm Ball Joint Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) or «Lower Control Arm Ball Joint Replacement (4WD, 2WD Z71)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  3. Install the wheel drive shaft into the knuckle.
  4. Install the upper control arm/ball joint into the knuckle. Refer to «Upper Control Arm Ball Joint Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) or «Upper Control Arm Ball Joint Replacement (4WD, 2WD Z71)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  5. Install the outer tie rod end into the knuckle. Refer to «Rack and Pinion Outer Tie Rod End Replacement»(/chevrolet/colorado/i-2004-2012/remont/manual-power-steering/#power-steering-system) .
  6. Install the speed senor wiring harness in the retaining clips on the upper control arm and frame.
  7. Install the brake caliper mounting bracket. Refer to «Brake Caliper Bracket Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#disc-brake-system) .
  8. Install the wheel drive shaft retaining nut to specifications. Refer to «Wheel Drive Shaft Replacement»(/chevrolet/colorado/i-2004-2012/remont/axle-shafts/#wheel-drive-shafts) .
  9. Remove the support from the lower control arm.
  10. Install the tire and wheel. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation)
  11. Remove the support and lower the vehicle.

J-42188-B Ball Joint Separator. See Special Tools .

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  3. Support the lower control arm at ride height.
  4. Remove the wheel speed sensor bracket bolt.
  5. Disconnect the wheel speed sensor brackets.
  6. Disconnect the front brake hose from the upper control arm. Refer to «Front Brake Hose Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#hydraulic-brake-system) .
  7. Remove the nut at the upper ball joint. Discard the nut.
  8. Remove the upper control arm bolts.
  9. Disconnect the upper control arm from the steering knuckle using J-42188-B . See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  10. Remove the upper control arm.
  1. Install the upper control arm.
  2. Install the upper control arm bolts. Tighten: Tighten the bolts to 160 N.m (118 lb ft).
  3. Connect the upper control arm to the steering knuckle.
  4. Install the new nut to the upper ball joint stud. Tighten: Tighten the nut to 100 N.m (74 lb ft).
  5. Connect the wheel speed sensor brackets.
  6. Install the wheel speed sensor bracket bolt. Tighten: Tighten the nut to 20 N.m (15 lb ft).
  7. Connect the front brake hose to the upper control arm. Refer to «Front Brake Hose Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#hydraulic-brake-system) .
  8. Remove the lower control arm support.
  9. Install the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  10. Lower the vehicle.
  11. Verify the wheel alignment. Refer to «Wheel Alignment Specifications»(/chevrolet/colorado/i-2004-2012/remont/wheel-alignment/#wheel-alignment-system__wheel-alignment-specifications) .

J 45938 Alignment Socket. See Special Tools .

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  3. Support the lower control arm at ride height.
  4. Remove the wheel speed sensor bracket bolt.
  5. Disconnect the wheel speed sensor brackets.
  6. Disconnect the front brake hose from the frame bracket. Refer to «Front Brake Hose Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#hydraulic-brake-system) .
  7. Remove the front shock. Refer to «Shock Absorber Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  8. Disconnect the upper control arm from the ball stud by removing the retention nuts.
  9. Remove the upper control arm nuts and the adjustment cams.
  10. Remove the upper control arm bolts.
  11. Remove the upper control arm.
  1. Install the upper control arm.
  2. Install the upper control arm nuts and the adjustment cams. Tighten: Using the J 45938 , tighten the nuts to 155 N. See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .m (114 lb ft).
  3. Connect the upper control arm to the ball stud by installing the retention nuts. Tighten: Tighten the nut to 64 N.m (47 lb ft).
  4. Connect the wheel speed sensor brackets.
  5. Install the wheel speed sensor bracket bolt. Tighten: Tighten the nut to 20 N.m (15 lb ft).
  6. Connect the front brake hose to the frame bracket. Refer to «Front Brake Hose Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#hydraulic-brake-system) .
  7. Install the front shock. Refer to «Shock Absorber Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  8. Install the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  9. Remove the lower control arm support.
  10. Lower the vehicle.
  11. Verify the wheel alignment. Refer to «Wheel Alignment Specifications»(/chevrolet/colorado/i-2004-2012/remont/wheel-alignment/#wheel-alignment-system__wheel-alignment-specifications) .

J 43631 Ball Joint Remover. See Special Tools .

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  3. Remove the stabilizer shaft links from the lower control arm. Refer to «Stabilizer Shaft Link Replacement (ZQ8, Z85)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) or «Stabilizer Shaft Link Replacement (Z71)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  4. Remove the shock absorber nut and through bolt. Refer to «Shock Absorber Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  5. Remove the lower ball joint stud nut.
  6. Disconnect the lower ball joint stud from the steering knuckle using J 43631 . See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  7. Remove the lower control arm nuts and the alignment cams.
  8. Remove the lower control arm bolts.
  9. Remove the lower control arm.
  1. Install the lower control arm.
  2. Install the lower control arm bolts.
  3. Install the nuts and washers. Tighten: Tighten the rear nut to 155 N.m (114 lb ft). Tighten the front nut to 155 N.m (114 lb ft).
  4. Connect lower ball joint stud to the steering knuckle.
  5. Install the nut to the ball joint stud. Tighten: Tighten the nut to 138 N.m (102 lb ft).
  6. Install the shock absorber through bolt and nut. Refer to «Shock Absorber Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  7. Install the stabilizer shaft links to the lower control arm. Refer to «Stabilizer Shaft Link Replacement (ZQ8, Z85)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) or «Stabilizer Shaft Link Replacement (Z71)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  8. Install the tire and wheel assembly. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  9. Lower the vehicle.
  10. Verify the wheel alignment. Refer to «Wheel Alignment Specifications»(/chevrolet/colorado/i-2004-2012/remont/wheel-alignment/#wheel-alignment-system__wheel-alignment-specifications) .

J 41805 Ball Joint Remover/Installer. See Special Tools .

  1. Remove the front drive axle, if equipped. Refer to «Differential Carrier Assembly Replacement»(/chevrolet/colorado/i-2004-2012/remont/differentials-drive-axles/#front-drive-axle) .
  2. Remove the lower control arm. Refer to «Lower Control Arm Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  3. Before removing the bushing, measure and record the distance from the bushing flange to the bracket. This will be the distance that the new bushing will be installed to.
  4. Using the J 41805 (1), remove the rear bushing. See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  1. Using the J 41805 (1), install the rear bushing. See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  2. Install the rear bushing to the predetermined measurement taken earlier.
  3. Install the lower control arm. Refer to «Lower Control Arm Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  4. Install the front drive axle, if equipped. Refer to «Differential Carrier Assembly Replacement»(/chevrolet/colorado/i-2004-2012/remont/differentials-drive-axles/#front-drive-axle) .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the jounce bumper mounting bolts.
  3. Remove the jounce bumper.
  1. Install the jounce bumper.
  2. Install the jounce bumper bolts. Tighten: Tighten the bolt to 32 N.m (24 lb ft).
  3. Lower the vehicle.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the jounce bumper.
  1. Install the jounce bumper.
  2. Lower the vehicle.
  1. Remove the shock absorber/spring assembly. Refer to «Shock Absorber Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  2. Remove the spring and mounting plate from the spring compressor.
  1. Assemble the mounting plate to the spring ensuring proper orientation.
  2. Align the center line of any of the upper mounting studs with the center line of the lower shock mount.
  3. Install the mounting plate and spring to the spring compressor.
  4. Install the shock absorber/spring assembly. Refer to «Shock Absorber Replacement (2WD, Z85, ZQ8)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  5. Lower the vehicle.

J 43631 Ball Joint Remover. See Special Tools .

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Remove the tire and wheel. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  3. Remove the brake rotor. Refer to «Brake Rotor Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#disc-brake-system) .
  4. Remove the wheel stud from the hub flange using the J 43631 . See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  5. Remove the wheel stud from the hub flange.
  1. Install the new stud into the hub flange hole using firm hand pressure.
  2. Install 4 washers to the new wheel stud.
  3. Thread a wheel nut onto the new stud with the flat side facing the front hub flange.
  4. Tighten the lug nut until the stud contacts the back of the hub flange.
  5. Remove the wheel nut.
  6. Remove the washers.
  7. Install the brake rotor. Refer to «Brake Rotor Replacement»(/chevrolet/colorado/i-2004-2012/remont/mechanical-hydraulic/#disc-brake-system) .
  8. Install the tire and wheel. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  9. Remove the safety stands.
  10. Lower the vehicle.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  2. Allow the front suspension to hang in the rebound position.
  3. Mark the adjuster bolt.
  4. Remove the adjuster bolt, spacer and adjuster nut.
  5. Remove the adjustment arms and torsion bars as a unit, moving it rearward to disengage the lower control arm.
  1. Install the adjustment arms and torsion bars in relation to where the bars were removed.
  2. Install the adjustment arm to the torsion bar and slide the torsion bar forward until the torsion bar fully engages the lower control arm.
  3. Install the adjuster bolt, spacer and adjuster nut.
  4. Lower the vehicle.
  5. Check the Z-Height. Refer to «Trim Height Specifications»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#suspension-general-diagnosis__trim-height-specifications) .
  1. Remove the torsion bar. Refer to «Torsion Bar Replacement»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  2. Remove the nuts and the bolts from the lower control arm.
  3. Remove the torsion bar anchor.
  1. Install the torsion bar anchor.
  2. Install the nuts and the bolts to the lower control arm. Tighten: Tighten the nuts to 80 N.m (59 lb ft).
  3. Install the torsion bar. Refer to «Torsion Bar Replacement»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .

J 45400 Strut Spring Compressor. See Special Tools .

Note. The front shock absorbers of the vehicle are multifunctional. In addition to contributing to a smooth ride they also provide the only stop to the front suspension when fully extended. Therefore, when servicing the shock absorber, service replacement shock absorbers must be equivalent to original shock absorbers in both extended length and strength. Use of shocks not complying to original equipment or strength could result in suspension over-travel or shock breakage. Suspension over-travel may result in suspension component breakage.

  1. Remove the absorber/spring assembly upper mounting nuts.
  2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/colorado/i-2004-2012/remont/hoistjack/#general-information) .
  3. Remove the tire and wheel. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  4. Remove the absorber/spring assembly bolt and nut.
  5. Remove the front stabilizer link. Refer to «Stabilizer Shaft Link Replacement (ZQ8, Z85)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) or «Stabilizer Shaft Link Replacement (Z71)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  6. Remove the absorber/spring assembly from the vehicle.
  7. Install the absorber/spring assembly (2) into the J 45400 (1). See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  8. Turn the spring compressor forcing screw (1) until the coil spring (2) is compressed.
  9. Remove the absorber upper retaining nut, bushings, and washers.
  10. Remove the absorber from the assembly.
  11. Do not remove the spring from the J 45400 . See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  1. Install the absorber to the J 45400 (1). See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  2. Install the absorber bushings and washers (2).
  3. Install the absorber retaining nut. Tighten: Tighten the shock absorber retaining nut to 20 N.m (15 lb ft).
  4. Remove the absorber/spring assembly (2) from the J 45400 (1). See «Special Tools»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system__special-tools) .
  5. Install the absorber/spring assembly to the vehicle.
  6. Install the absorber/spring assembly bolt and nut. Tighten: Tighten the absorber/spring assembly bolt to 110 N.m (81 lb ft).
  7. Install the front stabilizer link. Refer to «Stabilizer Shaft Link Replacement (ZQ8, Z85)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) or «Stabilizer Shaft Link Replacement (Z71)»(/chevrolet/colorado/i-2004-2012/remont/suspension-front/#front-suspension-system) .
  8. Install the tire and wheel. Refer to «Tire and Wheel Removal and Installation»(/chevrolet/colorado/i-2004-2012/remont/wheel-tire-system/#tires-and-wheels__tire-and-wheel-removal-and-installation) .
  9. Lower the vehicle.
  10. Install the absorber/spring assembly upper mounting nuts. Tighten: Tighten the absorber/spring assembly nuts to 27 N.m (20 lb ft).

Shock Absorber Disposal

CAUTIONGas charged shock absorbers contain high pressure gas. Do not remove the snap ring from inside the top of the tube. If the snap ring is removed, the contents of the shock absorber will come out with extreme force which may result in personal injury.
CAUTIONTo prevent personal injury, wear safety glasses when centerpunching and drilling the shock absorber. Use care not to puncture the shock absorber tube with the centerpunch.
  1. Make an indentation 10 mm (0.4 in) from the bottom (4) of the tube (3) using a centerpunch.
  2. Clamp the shock absorber in a vise horizontally with the shock absorber rod (1) completely extended.
  3. Drill a hole in the shock absorber at the centerpunch (4) using a 5 mm (3/16 in) drill bit. Gas or a gas/oil mixture will exhaust when the drill bit penetrates the shock absorber. Use shop towels in order to contain the escaping oil.
  4. Make an indentation in the middle (2) of the tube (3) with a centerpunch.
  5. Drill a second hole in the shock absorber at the centerpunch (2) using a 5 mm (3/16 in) drill bit. Oil will exhaust when the drill bit penetrates the shock absorber. Use shop towels in order to contain the escaping oil.
  6. Remove the shock absorber from the vise. Hold the shock absorber over a drain pan horizontally with the holes down. Move the rod (1) in and out of the tube (3) to completely drain the oil from the shock absorber.

General Description

The front suspension allows each wheel to compensate for changes in the road surface without affecting the opposite wheel. Each wheel independently connects to the frame with a steering knuckle, ball joint assemblies, and upper and lower control arms.

Two tie rods connect to the steering arms on the knuckles and to a steering gear.

Rear wheel drive models have a front suspension that consists of the following components

  1. Control arms
  2. Stabilizer shaft
  3. Shock/Coil spring modules

The upper part of each Shock/Coil spring module bolts to the frame. Three insulators, a mounting plate and a nut secure the coil spring to the shock housing. One bolt secures the lower part of the shock to the lower control arm.

A spring steel stabilizer shaft controls the side roll of the front suspension. This shaft is mounted in rubber insulators that are held by clamps to the frame side rails. The ends of the stabilizer shaft connect to the lower control arms with link assemblies.

The upper ball joint assembly is bolted into the upper control arm and is serviceable. The assembly attaches to the steering knuckle with a prevailing torque nut.

The lower ball joint assembly is bolted into the control arm and is serviceable. The assembly attaches to the steering knuckle with a prevailing torque nut.

The upper and the lower control arms have pressed-in bushings. The bolts pass through the bushings and join the arms to the frame.

Ball joint assemblies have rubber grease seals. These seals prevent the entry of moisture and dirt. This prevents damage to the bearing surfaces. All ball joints have grease fittings for routine maintenance.

Four-wheel drive models have a front suspension that consists of the following components

  1. Control arms
  2. Stabilizer shaft
  3. Shock absorbers
  4. Torsion bars (right and left side)

The upper part of each shock absorber extends through a frame bracket. Two insulators and a nut secure the upper part of the shock to the frame. A through bolt secures the lower part of the shock to the lower control arm.

A spring steel stabilizer shaft controls the side roll of the front suspension. This shaft is mounted in rubber insulators that are held by clamps to the frame side rails. The ends of the stabilizer shaft connect to the lower control arms with link assemblies.

The upper ball joint assembly is bolted into the upper control arm and is serviceable. The assembly attaches to the steering knuckle with a prevailing torque nut.

The lower ball joint assembly is bolted into the control arm and is serviceable. The assembly attaches to the steering knuckle with a prevailing torque nut.

The lower control arms also include a bolted on torsion bar anchor which is serviceable.

Torsion bars replace the conventional coil springs. The front end of the torsion bar attaches to the lower control arm. The rear of the torsion bar mounts into an adjustable arm at the torsion bar crossmember. This arm adjustment controls the vehicle trim height.

Both RWD and S4WD models have sealed front wheel bearings. These bearings are pre-adjusted and need no lubrication.

Special Tools

Special Tools Illustration Tool Number/Description J 41805 Ball Joint Remover/Installer J 42188-B Ball Joint Separator J 43631 Ball Joint Remover J 45400 Strut Spring Compressor J 45938 Alignment Socket

Scheme 4

Scheme 4: Special Tools
Scheme 4: Special Tools

Scheme 5

Scheme 5
Scheme 5

Scheme 6

Scheme 6
Scheme 6

Scheme 7

Scheme 7
Scheme 7

Scheme 8

Scheme 8
Scheme 8

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