How to Replace Pitman Arm 2007-2014 Chevrolet Silverado 2500 HD

Summary

This video provides a detailed, step-by-step guide on how to replace the pitman arm on a Chevy Silverado 2500. It covers the entire process from removing the splash shield and sway bar to disconnecting power steering lines, unbolting the steering box, and using a puller to remove the stubborn pitman arm. The guide also includes cleaning, greasing, and reassembling parts, as well as torque specifications for each component. The final steps involve refilling and bleeding the power steering system to ensure smooth operation. Whether you're a DIY enthusiast or a seasoned mechanic, this tutorial ensures a successful pitman arm replacement.

Takeaways

• 😀 Use a 15 mm socket to remove the four bolts securing the splash shield and skid plate.
• 😀 The sway bar must be removed to access the steering gearbox and other components.
• 😀 Disconnect the power steering fluid lines using pliers and a flare nut wrench to avoid leaks and spills.
• 😀 Always use a collection bucket when removing the power steering hose to catch any fluid that leaks out.
• 😀 When disconnecting the steering shaft, avoid beating or prying on the U-joint to prevent damage.
• 😀 The steering box is held by three 24 mm bolts—remove them to free the box from the frame.
• 😀 Use a 24 mm deep socket to remove the pitman arm nut and a puller tool for stubborn parts.
• 😀 After removing the old pitman arm, clean the shaft and apply grease to prevent future difficulty during removal.
• 😀 The new pitman arm should be carefully aligned on the shaft, followed by a lock washer and torqueing to 273 ft-lb.
• 😀 When reinstalling the steering box, make sure the pitman arm aligns with both the steering shaft and linkage before tightening the bolts.
• 😀 After reassembling, top off the power steering fluid and carefully bleed the system to remove any air, checking levels as needed.

Q & A

Why is it necessary to remove the sway bar during the installation of the pitman arm?

The sway bar needs to be removed to access one of the bolts that hold the steering gearbox in place. The sway bar bracket bolts obstruct access to these bolts, making removal necessary for this step.

What tool is used to remove the hose clamp, and why is it chosen over regular pliers?

A hose clamp plier is used instead of regular pliers because it locks onto the hose clamp and keeps it open, making it easier to remove without slipping.

Why doesn’t the mechanic bother draining the power steering fluid from the reservoir before starting the job?

Draining the reservoir doesn’t prevent fluid from leaking out once the lines are disconnected, so the mechanic skips this step and collects the fluid as it leaks.

What is the purpose of using an 18mm flare nut wrench in the process?

The 18mm flare nut wrench is used to break free the fitting of the pressure line, allowing the mechanic to disconnect the line from the steering box.

What is the significance of using a 1 and 13/16 socket to remove the pitman arm nut?

A 1 and 13/16 socket (equivalent to a 46mm socket) is the correct size to fit the pitman arm nut, which must be removed for the pitman arm replacement.

Why is the mechanic using heat on the pitman arm, and what is the caution?

Heat is applied to help break the rust that may be causing the pitman arm to stick. The mechanic is careful not to overheat the steering box or seals, which could be damaged.

How does the mechanic ensure the pitman arm is seated correctly after installation?

The mechanic ensures the pitman arm is seated by tightening the mounting nut and backing it off slightly to let the arm seat completely against the steering box before torquing it down.

Why is a torque wrench used for installing the pitman arm, and what torque value is required?

A torque wrench is used to ensure the pitman arm nut is tightened to the correct torque specification of 273 ft-lb to ensure it is securely mounted.

What steps are involved in reconnecting the steering box after replacing the pitman arm?

The steering box is lifted into place, with the pitman arm inserted into the steering linkage. The steering shaft is then connected to the box, and bolts are installed to secure the box to the frame.

How is air purged from the power steering system after the pitman arm installation?

To purge air, the steering wheel is turned left to right several times with the engine off. After the fluid level stabilizes and air bubbles stop, the system is considered bled.