Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
5.7L Engine
The 5.7L hydraulic cooling fan is integral to the fan shroud and is located between the radiator and the engine. See Figure.
The power steering pump supplies the hydraulic fluid and pressure to rotate the cooling fan blade, while the electrical part of the fan is controlled by the FCM.
The hydraulic fan drive (motor) consists of the three major following components:
- Steering flow control valve
- Fan control valve
- Two stage G-rotor hydraulic drive
The hydraulic fan and drive is not serviceable. Therefore any failure of the fan blade, hydraulic fan drive or fan shroud requires replacement of the fan module because the fan blade and hydraulic fan drive are matched and balanced as a system and servicing either separately would disrupt this balance.
| 1 - POWER STEERING RESERVOIR |
| 2 - POWER STEERING PUMP |
| 3 - HYDRAULIC FAN DRIVE ASSEMBLY |
| 4 - FAN BLADE |
| 5 - HYDRAULIC FAN CONTROL SOLENOID |
| 6 - POWER STEERING OIL COOLER |
| 7 - STEERING GEAR |
For hydraulic fluid routing information refer to flow chart. See Fig 1.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.