Tools you'll likely need:
* Wrench (usually 19mm or 7/8 inch): This is to loosen a nut at the base of the wiper arm. However, some models might use a different size or even a different type of fastener.
* Penetrating oil (like PB Blaster): Spray this on the nut to help break any corrosion. Let it sit for a while before attempting to loosen the nut.
* Gloves: To protect your hands.
* Rag or cloth: To clean up any spills or drips.
* Small pry bar or flat-head screwdriver (possibly): In some cases, you might need this to gently help loosen a stubborn wiper arm after the nut is removed.
Procedure:
1. Preparation: Park your Suburban on a level surface. Turn off the ignition and disconnect the negative battery terminal. This is a safety precaution.
2. Loosen the Nut: Locate the nut at the base of the wiper arm. Spray penetrating oil generously onto the nut and let it soak in for at least 15-20 minutes. This will significantly help in loosening the nut, particularly if it's rusted.
3. Remove the Nut: Using the appropriate wrench, carefully loosen and remove the nut. Turn it counter-clockwise.
4. Remove the Wiper Arm: Once the nut is off, the wiper arm *should* come off relatively easily. However, sometimes they get stuck due to corrosion or age. If it doesn't budge, *gently* use a small pry bar or flat-head screwdriver (wrapped in cloth to prevent scratching) to help pry it loose. Be extremely careful not to damage the wiper arm or the spindle. Apply even pressure; don't force it. Sometimes a sharp tap with a rubber mallet on the arm while gently pulling can help.
5. Clean the Spindle: After removing the wiper arm, clean the spindle thoroughly to remove any dirt, rust, or debris.
Important Considerations:
* Wiper Arm Position: Some mechanics recommend positioning the wiper arm in a specific location (often near the windshield) before loosening the nut. Consult your repair manual for the recommended position.
* Force: Avoid excessive force at all times. If the wiper arm is stubbornly stuck, stop and reassess the situation before risking damage.
* Repair Manual: The information provided is general. A repair manual specific to your 1993 Chevy Suburban will provide the most accurate and detailed instructions. This is especially crucial if you're unfamiliar with car repairs.
Remember safety first. If you're unsure about any step, it's best to consult a qualified mechanic.
