Silverado 1500 4WD V8-6.0L (2010)
Idler Arm: Testing and Inspection
Idler Arm Inspection
Special Tools
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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 and support it with jackstands. Refer to Lifting and Jacking the Vehicle (See: Wheels and Tires/Vehicle
Lifting/Service and Repair).
Caution: 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 straight-ahead and install anti-rotation pin J 42640 .
3. Install runout gauge J 45101 between the idler arm and the vehicle frame.
Ensure the runout gauge is at zero before taking the measurement.
