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Pontiac
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1996
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Sunfire L4-2.2L VIN 4
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Manufacturer Code Charts
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DTC 21
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Antitheft and Alarm Systems
Antitheft and Alarm Systems
Loss of PCM serial data, refer to Data Link Connector.
Data Link Connector