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Home >> Chevrolet >> 2008 >> Corvette Base, 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission - 6L50/6L80/6L90 - DTC P09786 To DTC P2764) >> DTC P1684, P1685 or P1686 >> Circuit/System Verification

Circuit/System Verification

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  1. Start the engine for 1 minute and observe the TCM power up temperature sensor and the TCM temperature sensor.
  2. The system is operating normally if the TCM power up temperature is within 10°C (18°F) of the TCM temperature sensor.
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