Tools you'll likely need:
* A flat-head screwdriver (possibly a small one)
* A rag or towel
* Possibly a pair of pliers (if the arm is stubborn)
* New wiper arm
Steps (General):
1. Locate the wiper arm nut: The rear wiper arm is attached to the wiper motor shaft with a nut. This nut is usually located where the arm connects to the shaft. You might need to carefully inspect the area.
2. Protect the vehicle: Place a rag or towel over the rear window to prevent scratching.
3. Remove the nut: Use the appropriate tool (usually a flathead screwdriver or nut driver) to carefully remove the nut securing the wiper arm to the shaft. Sometimes it's a push-on fitting without a nut, in which case you'll need to find a way to carefully pry it off, working slowly and gently so as not to break anything.
4. Remove the wiper arm: Once the nut is removed (or the fitting is disengaged), gently pull the wiper arm away from the shaft. It might be a little stiff. If it's stuck, you might need to use pliers to gently wiggle and pull it off, being careful not to bend or damage the arm or shaft.
5. Install the new wiper arm: Align the new wiper arm with the shaft and push it onto the shaft. If there's a nut, screw it on securely, but don't overtighten.
6. Test the wiper: Turn on your rear wiper to ensure it's working correctly and the new arm is properly installed.
Important Considerations:
* Year and Model: The exact method might differ slightly depending on the year and model of your Trailblazer. Consult your owner's manual!
* Stubborn Wiper Arm: If the wiper arm is extremely difficult to remove, use penetrating oil (like PB Blaster) and let it sit for a while to loosen things up. Try again after the oil has had time to work. Be very careful not to force anything as you could damage the motor shaft.
* Professional Assistance: If you're uncomfortable performing this repair yourself, take your vehicle to a qualified mechanic. It's a relatively simple job, but mistakes can be costly.
Remember: Always refer to your owner's manual for the most accurate and safe instructions for your specific vehicle. This is a general guide and may not perfectly match your Trailblazer.
