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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 P2730 >> Circuit Description

Circuit Description

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

The pressure control solenoid 1 (PCS1) is a pressure proportional to current (PCC) solenoid used to control on-coming, off-going and holding pressure to any 1 of the 5 clutches. The transmission control module (TCM) provides voltage to the main modulation (MAIN MOD), torque converter clutch (TCC) and PCS1 through a separate solid-state device called high side driver 1 (HSD1). The TCM regulates the amount of current to the PCS1 by switching the low side driver ON and OFF.

DTC P2730 is a type A DTC.

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