Tools You'll Likely Need:
* Socket set (metric)
* Ratchet and extensions
* Screwdrivers (Phillips and flathead)
* Pliers
* Wire cutters/strippers (possibly)
* Electrical tape (possibly)
* New wiper motor
* Jack and jack stands (essential for safety)
* Shop towels or rags
Procedure (General Steps - Consult your repair manual for specifics!):
1. Safety First: Disconnect the negative battery terminal. This prevents accidental short circuits and electrical shocks.
2. Access the Wiper Motor: This is usually located under the hood, behind the cowl (the area where the windshield meets the hood). You'll likely need to remove or at least partially remove the cowl panel to get access. This often involves removing wipers, nuts and bolts holding the panel in place, and potentially some plastic clips. Be gentle to avoid breaking the plastic. Your repair manual will show exactly how to remove the cowl panel.
3. Disconnect Electrical Connections: Carefully unplug the electrical connector(s) from the wiper motor. Take photos or make notes before disconnecting to remember how things go back together.
4. Disconnect Linkage: The wiper motor is connected to the wiper arms via a linkage system. Carefully disconnect this linkage. This often involves removing nuts, bolts, or clips. Pay close attention to how the linkage is assembled.
5. Remove the Wiper Motor: The motor is usually held in place by several bolts or nuts. Remove these fasteners to free the motor.
6. Installation of the New Wiper Motor: Install the new wiper motor in reverse order of removal. Make sure the linkage is properly reconnected and the electrical connectors are securely plugged in.
7. Reconnect Linkage and Electrical Connections: Double-check all connections.
8. Reinstall Cowl Panel: Carefully put the cowl panel back in place, ensuring all clips and fasteners are secure.
9. Reconnect Battery: Reconnect the negative battery terminal.
10. Test the Wipers: Turn on your wipers to make sure they operate correctly.
Important Considerations:
* Repair Manual: This is crucial. A Haynes or Chilton manual specific to your vehicle will provide detailed, illustrated instructions tailored to your 2004 Chevy Impala. Following general instructions without a manual could lead to damage or injury.
* Photos: Take lots of photos during the disassembly process. This will help immensely when reassembling.
* Patience: This is not a quick job. Take your time and work carefully to avoid damage.
* Professional Help: If you're not comfortable working on your car, consider taking it to a qualified mechanic.
This is a general overview. Do not attempt this repair without consulting a repair manual for your specific vehicle. Improper repair could lead to damage to your vehicle or personal injury. Remember to prioritize safety throughout the process.
