GM wiper motor is an important part of the windshield wiper system of a GM vehicle. It controls the movement of the wiper blades on the windshield. Understanding the wiring diagram of a GM wiper motor is essential for proper installation and repair. In this article, we will discuss the GM wiper motor wiring diagram in detail.
What is a GM Wiper Motor?
A GM wiper motor is used to control the movement of wiper blades on the windshield of a GM vehicle. It is a DC motor that converts electrical energy into mechanical energy to move the wiper blades. The motor is connected to the wiper linkage through a set of gears and linkages.
A GM wiper motor is usually located on the firewall or under the cowl panel in front of the windshield. It is powered by a fuse in the fuse panel and controlled by a switch on the dashboard. The motor is designed to work in different speed settings for different weather conditions, such as low, medium, and high speeds.
GM Wiper Motor Wiring Diagram
A GM wiper motor consists of several components, including the motor, geartrain, switch, and wiring harness. The wiring diagram of a GM wiper motor consists of various wires that are color-coded for easy identification. The following is a detailed explanation of the GM wiper motor wiring diagram:
Wire Colors and Functions
| Wire Color | Function |
|---|---|
| Yellow | Low Speed |
| Light Blue | High Speed |
| Dark Blue | Park Switch |
| Black | Ground |
| Red | Power |
The yellow wire is used for low speed, and the light blue wire is used for high speed. The dark blue wire is connected to the park switch, which is used to stop the wiper blades in the correct position when turned off. The black wire is the ground wire, and the red wire is the power wire.
Wiring Harness Connections
The wiring harness of a GM wiper motor is connected to the motor through a set of terminals. The following is a list of the terminal connections:
- Terminal 1 – Yellow wire – Low speed
- Terminal 2 – Light blue wire – High speed
- Terminal 3 – Dark blue wire – Park switch
- Terminal 4 – Black wire – Ground
- Terminal 5 – Red wire – Power
The wiring harness is connected to the motor by inserting the terminal connector into the appropriate terminal. The connector is then locked in place by a retention clip.
FAQs
Q: What is the function of the park switch in a GM wiper motor?
A: The park switch is used to stop the wiper blades in the correct position when turned off. This prevents the blades from stopping in an awkward position and obstructing the driver’s view.
Q: How do I troubleshoot a GM wiper motor?
A: To troubleshoot a GM wiper motor, check the fuse, wiring, and switch for any damage or malfunction. Also, make sure that the wiper blades are not obstructed and that the motor is receiving power and ground.
Q: How do I replace a GM wiper motor?
A: To replace a GM wiper motor, first remove the wiper arms and blades. Then, remove the cowl panel or the cover that is located over the motor. Disconnect the wiring harness from the motor and remove the mounting bolts. Install the new motor in place and reconnect the wiring harness and mounting bolts. Finally, reattach the cowl panel or cover and the wiper arms and blades.
Conclusion
In summary, understanding the GM wiper motor wiring diagram is important for proper installation and repair. The wiring diagram consists of various wires that are color-coded for easy identification. The wiring harness is connected to the motor through a set of terminals, and the motor is designed to work in different speed settings for different weather conditions. By following this guide, you can easily understand and troubleshoot the wiring diagram of a GM wiper motor.
