Here's a general outline of the process. This is not a substitute for a proper repair manual. Variations may exist depending on your specific van's configuration.
Tools You'll Likely Need:
* Jack and jack stands: Absolutely essential for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: To secure the vehicle.
* Socket set and wrenches: Various sizes will be needed.
* Ball joint separator: To separate the ball joint from the steering knuckle. A pickle fork can work, but a ball joint separator is safer and less likely to damage components.
* Press or bushing removal tool: A press is ideal for removing and installing the bushings. Specialized tools are available to press out the old and press in the new bushings. Improvising can damage the control arm.
* Torque wrench: Crucial for tightening bolts to the manufacturer's specifications.
* Hammer and punches: Possibly needed for stubborn components.
* Penetrating oil (PB Blaster, etc.): Helps loosen rusted or seized parts.
* New upper control arm bushings: Make sure you get the correct ones for your van.
* Safety glasses and gloves: Protect yourself.
General Steps (Consult your repair manual for precise details):
1. Safety First: Park the van on a level surface, engage the parking brake, and chock the wheels. Raise the van securely with the jack and place it on jack stands.
2. Disconnect the Sway Bar Link: This will give you more room to work.
3. Disconnect the Ball Joint: Use the ball joint separator to separate the ball joint from the steering knuckle. This often requires significant force.
4. Remove the Upper Control Arm Bolts: These are typically located at the frame and the control arm. Apply penetrating oil if needed. You might need to support the control arm to prevent it from falling.
5. Remove the Upper Control Arm: Once the bolts are removed, carefully lower the control arm.
6. Remove the Old Bushings: This is where the press or bushing removal tool is essential. Using brute force can easily damage the control arm. The process often involves pressing the old bushing out from one side and then the other.
7. Install the New Bushings: Use the press or installation tool to carefully press the new bushings into the control arm. Ensure they are seated correctly and evenly.
8. Reinstall the Upper Control Arm: Carefully align the control arm and install the bolts. Tighten them to the torque specifications specified in your repair manual.
9. Reconnect the Ball Joint: Reattach the ball joint to the steering knuckle.
10. Reconnect the Sway Bar Link: Reattach the sway bar link.
11. Lower the Vehicle: Carefully lower the van and remove the jack stands.
12. Torque Check: Double-check that all bolts are torqued to the correct specifications.
13. Test Drive: Take the van for a short test drive to check for any unusual noises or handling issues.
Important Considerations:
* Rust: If your van is older and exposed to elements, rust can make this job significantly more difficult. Penetrating oil is your friend.
* Press: Renting a press is highly recommended. Improvising can lead to damage.
* Alignment: After replacing the bushings, it's crucial to get a wheel alignment done. This ensures proper handling and tire wear.
This is a simplified overview. Always consult a repair manual specific to your 1998 Chevy Express 3500 van before attempting this repair. If you're uncomfortable performing this repair yourself, it's best to take it to a qualified mechanic. Improper repair can compromise your safety and the handling of your vehicle.
