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Home >> Cadillac >> 2008 >> Escalade RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Park - Engine Running >> Shift Valves (1-2, 2-3 and 3-4)

Shift Valves (1-2, 2-3 and 3-4)

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Signal A fluid pressure holds the 1-2 shift valve in the downshift position and the 3-4 valve in the upshift (first and fourth gear) position. The signal B fluid pressure from the 2-3 shift solenoid valve holds the 2-3 shift valve train in the downshift position.

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