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in preparation for a 3-4 upshift. 3-2 Downshift Valve Spring force holds the valve closed, blocking the 2nd fluid and the 2nd clutch fluid. This valve is 3-2 Control Solenoid Valve In second gear, the PCM energizes the normally closed solenoid. This opens the AFL fluid circuit 3-2 Control Valve The 3-2 signal fluid pressure moves the valve against the spring force. This action does not affect 3-4 Shift Valve Signal A fluid pressure exhausts and spring force moves the valve into the downshift position Torque Converter Clutch TCC Solenoid Valve Under normal operating conditions, in Overdrive Range-Second Gear, the PCM keeps the
2007 Hummer H3 2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3
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