Sierra Classic 2500 4WD V8-6.0L (2007)
Pressure Regulating Solenoid: Service and Repair
4L80-E/4L85-E - Automatic Transmission
Pressure Regulator Replacement
Tools Required
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J 36850 Transjel(r) Lubricant
Removal Procedure
1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. Remove the transmission filter. Refer to Automatic Transmission Fluid and Filter Replacement.
3. Caution:
Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.
Remove the reverse boost valve bushing retainer ring (2).
4. Remove the following from the reverse boost valve cylinder:
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The reverse boost valve bushing
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The reverse boost valve
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The pressure regulator spring retainer
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The pressure regulator spring
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The pressure regulator valve
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The reverse boost valve bushing
Installation Procedure
1. Install the pressure regulator valve using J 36850.
