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Buick
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2009
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Allure Super
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System & Fuel System - 5.3L - DTC P0420 To DTC P3449
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DTC P1682
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Repair Procedures
Repair Procedures
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
Engine Control Module Programming and Setup
Engine Control Module Replacement
Relay Replacement (Attached to Wire Harness)
or
Relay Replacement (Within an Electrical Center)