Upper Control Arm: Notes
REMOVAL
The air suspension system can be disabled and enabled by using the Display Screen Module (DSM) in the vehicle under Tire Jack Mode, which is the preferred method. If the disable level control routine in the scan tool is used, it will only disable the level control (automatic and manual) for that ignition cycle. The air suspension system can also be enabled by driving the vehicle above 19 km/h (12 mph). The air suspension should be disabled prior to lifting the vehicle or performing any work.
- If equipped with air suspension, disable the air suspension system. Refer to DISABLING AND ENABLING AIR SUSPENSION .
- Raise and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE .
- Remove the tire and wheel assembly. Refer to TIRES AND WHEELS, REMOVAL AND INSTALLATION
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1 - Upper Control Arm Bolts 2 - Upper Ball Joint Nut 3 - Wire Harness Routing Clip - Disengage the wire harness routing clip from the upper control arm.
- If equipped, disconnect the front height sensor rod from the upper control arm. Refer to SENSOR, HEIGHT, REMOVAL AND INSTALLATION .CAUTION:
Never allow the disc brake caliper to hang from the brake hose. Damage to the brake hose will result. Provide a suitable support to hang the caliper securely.
- Remove and DISCARD the upper ball joint nut.
- Separate upper ball joint from the steering knuckle using (special tool #8677, Remover, Ball Joint).
- Remove the upper control arm bolts and the flag nuts.
- Remove the upper control arm.
INSTALLATION
Follow the removal procedure in reverse for general reassembly of the components on the vehicle. The steps listed below are calling out specific procedures that should be followed during installation.
In any instance where a bolt is through a rubber bushing, the bolt must be torqued with the vehicle at normal ride height.
- If equipped with air suspension, enable the air suspension system.
- Perform the wheel alignment standard procedure. Refer to WHEEL ALIGNMENT, STANDARD PROCEDURE .