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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (AUTOMATIC TRANSMISSION - ALLISON - DIAGNOSTICS (DTCs P0218-P0731)) >> DTC P0703 >> Circuit Description

Circuit Description

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A mechanical switch attached to the brake pedal sends a signal to the transmission control module (TCM) indicating the service brake has been applied.

DTC P0703 is a type C DTC.

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