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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Automatic Transmission - 4T65-E - Description And Operation) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Park or Neutral - Engine Running (Neutral) >> Manual Valve (404)

Manual Valve (404)

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The manual valve is moved to the NEUTRAL position and blocks line pressure from entering the Reverse fluid circuit. The reverse fluid circuit is opened to an exhaust at the manual valve.