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Saturn
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1997
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SW1 Standard
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics
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Diagnostic Trouble Codes
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DTC P1639 - TCM A/D Failure
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Diagnostic Procedures
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Diagnostic Procedures
Record and diagnose all DTC(s). Clear DTC(s). If DTC P1639 resets, replace PCM.