Operation CHARM
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Buick
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1988
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Regal V6-173 2.8L
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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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Testing and Inspection
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Scan Tool Testing and Procedures
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Function Selector Positions
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Trouble Codes
Trouble Codes
Trouble codes set in ECM memory will be displayed on SCAN numerical readout.