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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 246 (Automatic Transaxle - 4T65-E - Overhaul) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Park or Neutral - Engine Running (Park - With Touch Activated Power) >> 1-2, 3-4 Shift Solenoid Valve (315A)

1-2, 3-4 Shift Solenoid Valve (315A)

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Controlled by the powertrain control module (PCM), the 1-2, 3-4 shift solenoid (SS) valve is energized (On) in PARK range. Actuator feed pressure moves the 1-2 shift valve (318) against spring pressure and directs line fluid into the 1-2, 3-4 signal passage. 1-2, 3-4 signal fluid is then directed to the 3-4 shift valve (362).

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