Express 2500 2WD V8-4.8L VIN V (2004)
Valve Body: Service and Repair
Automatic Transmission - 4L80-E/4L85-E
Valve Body and Pressure Switch Replacement
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Tools Required
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J 25025 Guide Pins
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J 36850 Transjel.
Removal Procedure
1. Ensure that removal of the valve body is necessary before proceeding.
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Important: The following components can be serviced without removing the valve body from the transmission:
The 2-3 solenoid (1)
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The internal wiring harness (2)
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The 1-2 shift solenoid (3)
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The transmission fluid temperature sensor (4)
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The transmission fluid pressure manual valve position switch (5)
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The pressure control solenoid (6)
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The torque converter clutch pulse width modulation (TCC PWM) solenoid (7)
2. Remove the fluid level indicator.
3. Raise the vehicle.
4. Remove the oil pan, gasket, and filter.
5. Disconnect the internal wire harness from the transmission fluid pressure (TFP) manual valve position switch.
