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Chevrolet
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2002
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Blazer 4D Utility, 4WD, Part Time
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Repair and Diagnosis
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Engine Performance
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Testing & Diagnosis
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Engine Controls - System & Component Testing
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Ignition System
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Ignition Relay Diagnosis (4.3L)
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Diagnostic Aids
Diagnostic Aids
If IGN relay fails to close:
Scan data will be available.
Vehicle will crank, no start.
Dash indicator lights will illuminate.