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Home >> Chevrolet >> 2009 >> Impala Police >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 4T65-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> Description And Operation >> Automatic Transmission Hydraulic Diagrams >> Overdrive Range, First Gear >> Manual Valve (404)

Manual Valve (404)

Is moved by the gear selector lever and allows line pressure to enter the D4 passage.