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GMC
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1981
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Forward Control 7.4L Eng VIN W, Standard Trans
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Repair and Diagnosis (Single Page)
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General Information
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Basic Trouble Shooting
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Manual & Power Steering Gear Trouble Shooting
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Power Steering Trouble Shooting
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Condition & Possible Cause
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Power Steering Handling Diagnosis
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Steering Wheel Surges or Jerks When Turning
Steering Wheel Surges or Jerks When Turning
Low fluid level or loose pump belt.
Insufficient pump pressure.
Sticky flow control valve.
Steering linkage hitting engine oil pan at full turn.