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Home >> Cadillac >> 2007 >> Escalade ESV >> Repair and Diagnosis >> External Pages >> Different car >> Section 1283 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Overdrive Range, First Gear >> 1-2 Shift Valve

1-2 Shift Valve

WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Signal A fluid pressure holds the valve in the downshifted position against spring force. In the First gear position, the valve blocks D4 fluid from entering the 2nd fluid circuit.

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