K 1500 Yukon Denali AWD V8-6.0L VIN U (2002)
Idler Arm: Testing and Inspection
Idler Arm Inspection
Tools Required
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J 35999 Spring Scale
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J 42640 Steering Column Anti-Rotation Pin
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J 45101 Hub and Wheel Runout Gauge
1. Raise the vehicle on a hoist. Support the vehicle with jackstands.
Notice: With wheels of the vehicle facing straight ahead, secure the steering wheel utilizing steering column anti-rotation pin, steering column
lock, or a strap to prevent rotation. Locking of the steering column will prevent damage and a possible malfunction of the SIR system. The steering
wheel must be secured in position before disconnecting the following components:
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The steering column
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The intermediate shaft(s)
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The steering gear
After disconnecting these components, do not rotate the steering wheel or move the front tires and wheels. Failure to follow this procedure may
cause the SIR coil assembly to become un-centered and cause possible damage to the SIR coil. If you think the SIR coil has became un-centered,
refer to your specific SIR coil’s centering procedure to re-center SIR Coil.
2. Position the wheels in a straight-ahead position and install the J 42640.
3. Install the dial indicator J 45101 between the idler arm and vehicle frame.
Ensure the gauge is at zero before taking a measurement.
