Here's a general procedure. Note that specific details might vary slightly depending on the exact trim level of your Cavalier. Always consult a repair manual specific to your vehicle year and model for the most accurate instructions.
1. Locate the Wiper Arm Nut: Underneath the wiper arm, you'll find a nut. It's usually fairly large and may be covered by a plastic cap. Remove this cap if present.
2. Protect the Windshield: Place a rag or towel over the windshield under the wiper arm to prevent scratching.
3. Use the Correct Tool: Use a socket wrench or an open-end wrench that fits the nut snugly. The size will vary; you may need to try a few sizes to find the right one.
4. Break the Nut Loose: Often, these nuts are very tight due to rust and corrosion. Use penetrating oil (like PB Blaster) several hours before you attempt to loosen the nut. This will help to free up any seized parts. Apply steady pressure, working the wrench back and forth gently to avoid stripping the nut. A breaker bar might be needed if it's exceptionally tight.
5. Remove the Nut: Once loosened, carefully remove the nut entirely.
6. Remove the Wiper Arm: With the nut removed, the wiper arm *should* pull straight up and off. However, it's sometimes stubborn due to corrosion. You may need to gently rock or pry it using a plastic pry tool (to prevent scratching) or a flat-head screwdriver (used carefully, placing a rag to protect the arm). Avoid excessive force as you could damage the wiper arm or the wiper motor spindle.
7. Repeat for the Other Arm: Repeat steps 1-6 for the other wiper arm.
8. Inspect and Clean: Once the arms are off, inspect the wiper motor spindle for corrosion. Clean it with a wire brush and apply a thin layer of anti-seize compound to prevent future corrosion.
Important Considerations:
* Rust and Corrosion: The biggest obstacle is usually rust. Penetrating oil is your friend. Allow ample time for it to work its magic.
* Stripped Nuts: If you strip the nut, you may need to use vise grips or other specialized tools to remove it. In a worst-case scenario, the entire wiper arm assembly might need to be replaced.
* Wiper Arm Removal Tool: Some auto parts stores sell specialized wiper arm pullers. These tools can help to remove stubborn arms without causing damage.
Remember, safety first. If you're uncomfortable performing this task, it's best to take your vehicle to a qualified mechanic. They have the right tools and expertise to do it safely and efficiently.
