Sierra Classic 2500 4WD V8-6.0L (2007)
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 Gage
1. Raise the vehicle on a hoist. Support the vehicle with jackstands. Refer to Vehicle Lifting.
2. Notice:
The wheels of the vehicle must be straight ahead and the steering column in the LOCK position before disconnecting the steering column or
intermediate shaft from the steering gear. Failure to do so will cause the SIR coil assembly to become uncentered, which may cause damage to the
coil assembly.
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 gage is at zero before taking a measurement.
4. Place a J 35999 near the relay rod end of the idler arm.
