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XL7 Luxury, AWD
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Diagnostic Information and Procedures
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DTC P1684-P1686: Transmission Control Module (TCM) Power Up Temperature Sensor
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Conditions for Setting the DTC
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P1686
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Conditions for Setting the DTC: P1686
The TCM power up temperature is 165 °C (329 °F) or more for 10 seconds or greater.