Sierra Classic 2500 4WD V8-6.0L (2007)
Replace the bracket if the angle is 90° or more.
To remove the pressure control solenoid 1 (PCS1) or PCS2, remove three bolts (4) and the pressure control valve retaining bracket (5). Remove
accumulators (3) and springs (6) if they do not fall out when the bracket (5) is removed.
5. Note the position of the solenoid connector and pull the solenoid (1) or (8) out of the bore in the control valve assembly. The O-ring on the
solenoid provides the resistance felt during removal.
Installation Procedure
1. Obtain the new solenoid (1) or (8). Lubricate new O-ring (2) or (7) with clean transmission fluid. Install the O-ring and push the new solenoid into
the control valve body bore with the wiring harness connector in the correct position.
2. Install the 2 accumulators (3) and springs (6) before installing the pressure control valve retaining bracket (5). The valve (3) goes in the bore first
with the hollow end facing outward, followed by the spring (6) which goes inside the hollow portion of the valve.
3. Notice:
Refer to Fastener Notice in Service Precautions.
Install the pressure control valve retaining bracket (5), and install the 3 bolts (4).
Tighten the bolts to 12 Nm (108 inch lbs.).
