Sierra 3500 4WD V8-6.0L (2008)
Pressure Regulating Solenoid: Service and Repair
Control and Shift Solenoids Replacement
Removal Procedure
1. Remove the transmission filter. Refer to Automatic Transmission Fluid and Filter Replacement (See: Service and Repair/Removal and
Replacement) .
Important: Removal of the 1-2 accumulator is necessary only if servicing the pressure control solenoid.
2. Remove the 1-2 accumulator, if necessary. Refer to Accumulator Assembly, Spacer Plate, and Gaskets (See: Accumulator/Service and Repair) .
3. Disconnect the internal wiring harness electrical connectors from the following components:
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Transmission fluid pressure switch (1)
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1-2 shift control solenoid (2)
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2-3 shift control solenoid (3)
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Pressure control solenoid (4)
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torque converter clutch pulse width modulation (TCC PWM) solenoid (5)
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3-2 control solenoid (6)
4. Remove the pressure control solenoid retainer bolt (364A) and retainer (378).
5. Remove the pressure control solenoid (377).