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Home >> Chevrolet >> 2009 >> HHR SS, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission - 4T45-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Description And Operation >> Automatic Transmission Hydraulic Diagrams >> Manual First Gear (With Electronic Range Select Mode) >> Manual Valve >> 1-2 Shift Solenoid Valve

1-2 Shift Solenoid Valve

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The PCM energizes the 1-2 shift solenoid valve when vehicle speed is below approximately 48-56 km/h (30-35 mph). The 1-2 signal fluid is blocked from exhausting through the solenoid valve.