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Home >> GMC >> 2011 >> Yukon Base, 5.3 3 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Automatic Transmission - 2ML70 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2728-P2730 >> Circuit/System Description

Circuit/System Description

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The clutch pressure control solenoid 5 is part of the control solenoid valve assembly and is not serviced separately. The transmission control module supplies 12 volts to the PC solenoid 5 through the high side driver 1 circuit. The transmission control module controls the clutch pressure control solenoid 5 through the clutch pressure control solenoid 5 control circuit. The normally low clutch pressure control solenoid 5 flows fluid to the actuator feed limit valve when commanded ON and exhausts fluid when commanded OFF. The clutch pressure control solenoid 5 regulates the transmission fluid pressure from the auxiliary transmission fluid pump in order to maintain transmission fluid pressure during electric only and auto-stop modes.

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