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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 35 (AUTOMATIC TRANSMISSION - ALLISON - DIAGNOSTICS (DTCs P2724-P2771)) >> DTC P2724 >> Circuit Description

Circuit Description

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Pressure control solenoid 1 (PCS1) is used to control on-coming, off-going, and holding pressure in any 1 of 5 clutches. This solenoid is referred to as a pressure proportional to current (PPC) solenoid, since the output hydraulic pressure supplied by this solenoid is proportional to the controlled current command.

The transmission control module (TCM) uses information from the turbine and output speed sensors to detect if a clutch is slipping. The clutch being controlled by PCS1 will vary depending on the shift that was being completed.

DTC P2724 is a type A DTC.