Tools You'll Likely Need:
* Flat-head screwdriver (or similar pry tool): A plastic pry tool is preferable to avoid scratching the paint.
* Wrench: Usually a 10mm or 11mm wrench, but this can vary. You might need to check the size of the nut securing the arm. Have a few sizes handy.
* Gloves: To protect your hands from potential cuts or scratches.
* Penetrating oil (optional): If the nut is particularly stubborn.
Procedure:
1. Park the Vehicle: Make sure your vehicle is parked on a level surface and the ignition is off.
2. Locate the Nut: The wiper arm is attached to the wiper arm pivot shaft with a nut. This nut is usually hidden under a plastic cap or cover. Sometimes it is plainly visible.
3. Remove the Wiper Arm Cap (If Applicable): If there's a plastic cap, carefully pry it off using the flat-head screwdriver or plastic pry tool. Be gentle to avoid breaking it. Often, a slight twist will help loosen it.
4. Remove the Wiper Arm Nut: Use the appropriate wrench to loosen and remove the nut securing the wiper arm to the pivot shaft. The nut might be left-hand threaded (meaning it tightens counterclockwise and loosens clockwise), so be careful when attempting to loosen it.
5. Remove the Wiper Arm: Once the nut is off, you might be able to pull the wiper arm straight off. Sometimes it's a little stubborn and might require some gentle wiggling or twisting while pulling. Do NOT use excessive force. If it is stuck, check to see if the wiper arm is against the windshield. Some force may be needed, however, if you suspect any damage you may want to look into additional tips for removal.
6. Repeat for the Other Arm: Follow steps 2 through 5 for the other wiper arm.
Important Considerations:
* Left-Hand Thread: As mentioned, the nut securing the wiper arm might be a left-hand thread. If it doesn't loosen easily turning counterclockwise, try turning it clockwise.
* Spray Lubricant: If the nut is extremely stubborn, apply a penetrating oil to help loosen it. Let it sit for a few minutes to penetrate the threads.
* Damaged Wiper Arm: If you are attempting to remove the wiper arm, and it breaks during removal, you will need a replacement wiper arm.
* Windshield Damage: Be extra cautious not to damage the windshield during the process.
If you are uncomfortable performing this task yourself, it's best to take your Silverado to a qualified mechanic or auto parts store for assistance. They have the right tools and expertise to avoid any damage to your vehicle.
