Operation CHARM
: Car repair manuals for everyone.
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Buick
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1993
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Riviera V6-231 3.8L VIN L SFI
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Repair and Diagnosis
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Relays and Modules
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Relays and Modules - Powertrain Management
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Relays and Modules - Computers and Control Systems
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Body Control Module
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Testing and Inspection
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Reading and Clearing Diagnostic Trouble Codes
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Clearing Diagnostic Trouble Codes
Clearing Diagnostic Trouble Codes
Follow the steps in the flow charts to clear trouble codes.
Part 1
Part 2
