Sierra Classic 2500 4WD V8-6.0L (2007)
Fluid Pressure Sensor/Switch: Service and Repair
4L60-E/4L65-E/4L70-E - Automatic Transmission
Valve Body and Pressure Switch Replacement
Removal Procedure
1. Ensure that removal of the valve body is necessary before proceeding. The following components can be serviced without removing the valve
body from the transmission:
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The torque converter clutch solenoid (1)
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The pressure control solenoid (2)
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The internal wiring harness (3)
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The 2-3 shift solenoid (4)
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The 1-2 shift solenoid (5)
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The transmission fluid pressure manual valve position switch (6)
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The 3-2 shift solenoid (7)
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The torque converter clutch pulse width modulation (TCC PWM) solenoid (8)
2. Remove the fluid level indicator.
3. Remove the secondary fluid pump, if equipped with RPO HP2. Refer to Secondary Fluid Pump Replacement (5.3L Engine w/RPO HP2).
4. Remove the transmission filter. Refer to Automatic Transmission Fluid and Filter Replacement.
5. Disconnect the internal wiring harness electrical connectors from the following components:
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The transmission fluid pressure manual valve position switch (1)
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The 1-2 shift solenoid (2)
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The 2-3 shift solenoid (3)
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The pressure control solenoid (4)
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The TCC PWM solenoid (5)
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The 3-2 shift solenoid (6)
