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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1049 (Automatic Transmission - ALLISON - DTC P0218 To DTC P0732) >> DTC P0659 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0659 is set when the TCM detects greater than 6.0 volts at the HSD1 terminal prior to commanding HSD1 ON.

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