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Pontiac
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1999
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Bonneville V6-3.8L SC VIN 1
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Repair and Diagnosis
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Heating and Air Conditioning
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Testing and Inspection
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Reading and Clearing Diagnostic Trouble Codes
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Displaying & Reading Trouble Codes - HVAC System - Automatic
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Without Scan Tool
Without Scan Tool
You must use a scan tool in order to display the Diagnostic Trouble Codes
(DTCs)
. No provisions exist for on-board diagnostics.