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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 945 (Automatic Transmission - 6L50/6L80/6L90 - DTC P1684 To DTC P2764) >> DTC P1684, P1685 or P1686 >> Conditions for Setting the DTC >> P1684 - Fail Case 3

P1684 - Fail Case 3

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The TCM power up temperature changes by greater than or equal to 20°C (36°F) 14 times over 7 seconds.

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