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GMC Truck
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2003
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K 3500 Truck 4WD V8-6.0L VIN U
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Repair and Diagnosis
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Lighting and Horns
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Testing and Inspection
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Symptom Related Diagnostic Procedures
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Headlamps Always On - Low or High Beam
Headlamps Always On - Low or High Beam
Steps 1 - 9:
Steps 10 - 16:
Steps 17 - 18: