Here's a generalized outline of the process:
1. Preparation:
* Disconnect the battery: This prevents accidental short circuits. Disconnect the negative (-) terminal first.
* Gather tools: You'll likely need various sockets, wrenches, screwdrivers (Phillips and flathead), possibly pliers, and a socket wrench extension. Again, check your repair manual.
* Protect yourself: Wear safety glasses to protect your eyes from debris.
2. Accessing the Wiper Motor:
* Remove the wiper arms: This usually involves using a special wiper arm puller tool to avoid scratching the windshield. If you don't have one, there are methods involving carefully prying them off (be extremely cautious!), but a puller is highly recommended.
* Remove the wiper cowl: This plastic cover sits over the wiper mechanism. It's typically held on by clips or screws. Carefully remove it to expose the motor.
* Disconnect electrical connectors: Unplug the electrical connector(s) from the wiper motor. Take photos or make notes to ensure you reconnect them correctly.
3. Removing the Wiper Motor:
* Locate mounting bolts: The motor is typically attached to the firewall or body with bolts.
* Remove mounting bolts: Carefully unscrew these bolts.
* Remove the motor: Once the bolts are removed, gently remove the motor from its mounting location. There might be some resistance due to linkages.
4. Installing the New Wiper Motor:
* Install the new motor: Carefully align the new motor in its mounting position.
* Secure the motor: Reinstall the mounting bolts and tighten them securely.
* Reconnect electrical connectors: Connect the electrical connectors to the new motor, making sure they are firmly seated. Refer to your notes or photos if necessary.
* Reinstall the wiper cowl: Put the wiper cowl back in place, ensuring all clips or screws are securely fastened.
* Reinstall the wiper arms: Attach the wiper arms using the puller tool or your carefully chosen alternative method.
5. Testing:
* Reconnect the battery: Reconnect the battery's positive (+) terminal.
* Test the wipers: Turn on your wipers to ensure they are functioning correctly. Check for proper speed and sweeping action.
Important Considerations:
* Year and Model Specifics: The location of the motor and the exact steps involved differ significantly between Blazer models (e.g., S-10 Blazer, K5 Blazer). Your repair manual is indispensable.
* Linkages: Pay close attention to the linkages connecting the motor to the wiper arms. Note their position before removing the old motor to ensure correct reassembly.
* Rust and Corrosion: In older Blazers, rust and corrosion can make removing bolts difficult. Use penetrating oil to help loosen them.
If you're not comfortable performing this repair yourself, it's best to take your Blazer to a qualified mechanic. Improper installation can lead to damage to your vehicle or even personal injury.
