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GMC Truck
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2002
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K 2500 Yukon XL 4WD V8-6.0L VIN U
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Repair and Diagnosis
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Maintenance
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Service Intervals
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Periodic Maintenance
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Spark Plug Wire Inspection
Spark Plug Wire Inspection
Clean the spark plug wires and inspect for burns, cracks or other damage. Check the wire boot fit at the coils and at the
spark plugs
. Replace wires as needed.