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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 63 (Front Suspension System) >> Repair Instructions >> Upper Control Arm Replacement >> Removal Procedure
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Removal Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
  2. Remove the tire and wheel assembly. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  3. Disconnect the electronic suspension control (ESC) sensor link.
    Fig 1: Disconnecting Electronic Suspension Control (ESC) Sensor Link
    G01419402Courtesy of GENERAL MOTORS CORP.
  4. Support the lower control arm with a jackstand.
  5. Loosen the ball joint stud nut but do not remove the nut.
  6. Using tool J 42188  separate the upper ball joint stud from the upper control arm.
  7. Remove tool J 42188  from the ball joint stud. Remove the ball joint stud nut from the ball joint stud.
    Fig 2: Removing Ball Joint Stud Nut From Ball Joint Stud
    G01419403Courtesy of GENERAL MOTORS CORP.

    Important:  The upper control arm shims will have an effect on the camber and the caster. Make sure to use an equal thickness of shims on both sides of each individual upper control arm bushing.

  8. Remove the upper control arm bolts and shims. Note the number and position of the shims for installation purposes.
  9. Remove the upper control arm from the vehicle.
Fig 3: Removing Upper Control Arm
G01419404Courtesy of GENERAL MOTORS CORP.