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Chevy Truck
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1999
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S10/T10 Blazer 4WD V6-4.3L VIN W
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Relays and Modules - Computers and Control Systems
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Engine Control Module
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Description and Operation
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Visual and Physical Underhood Inspection
Visual and Physical Underhood Inspection
Carefully perform a visual and physical underhood inspection when performing any diagnostic procedure. This inspection will often lead to repairing a malfunction without further action.