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Home >> GMC >> 2007 >> Yukon Denali >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0973 To DTC P2771) >> DTC P1815 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different variant/trim than selected.

DTC P1815 sets when the TCM detects D2 only, TFP manual valve position switch state during and after engine start for 3.25 seconds.

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