If you own a General Motors (GM) vehicle with power mirrors, understanding the wiring diagram is essential to diagnosing and repairing any issues with the mirrors. Power mirrors are a convenient feature in modern vehicles, but when they malfunction, it can be frustrating to operate the vehicle without them. This article will provide a concise guide to GM power mirror wiring diagrams and frequently asked questions.
GM Power Mirror Wiring Diagram Components
A typical GM power mirror wiring diagram consists of three primary components: the mirror switch, the power mirror motor, and the mirror control module. Understanding the function of each component is important to troubleshooting any issues.
The Mirror Switch
The mirror switch is located on the driver side door panel of the vehicle. It is responsible for sending electrical signals to the mirror control module, which in turn controls the power mirror motors. The mirror switch has four buttons, including left/right and up/down buttons, and is wired into the vehicle’s main electrical system.
The Power Mirror Motor
The power mirror motor is responsible for moving the mirror glass in response to signals received from the mirror control module. It is typically located inside the mirror housing and has two wires. One wire is for power, and the other is for ground.
The Mirror Control Module
The mirror control module is responsible for interpreting signals received from the mirror switch and sending signals to the power mirror motors. It is located inside the vehicle and is connected to the vehicle’s main electrical system. The mirror control module is responsible for controlling several functions, including mirror position, mirror defrost, and mirror memory.
GM Power Mirror Wiring Diagram Examples
Below are two examples of GM power mirror wiring diagrams for vehicles produced between 2000 and 2006. These diagrams show wiring for the mirror switch, power mirror motor, and mirror control module.
| Diagram 1 | Diagram 2 |
|---|---|
Frequently Asked Questions
How do I troubleshoot power mirror issues in my GM vehicle?
The first step in troubleshooting power mirror issues is to check the fuse for the mirrors. If the fuse is intact, the next step is to test the mirror switch for continuity. If the switch is functioning properly, the next step is to test the power mirror motor for continuity. If both the switch and motor are functioning properly, the final step is to test the mirror control module.
How do I replace a power mirror motor on my GM vehicle?
The procedure for replacing a power mirror motor varies depending on the specific vehicle model. In general, the process involves removing the mirror housing from the vehicle, disconnecting the wiring harness from the old motor, and installing the new motor. It is important to follow the vehicle’s service manual for specific instructions.
What should I do if my power mirrors stop working?
If your power mirrors stop working, the first step is to check the fuse for the mirrors. If the fuse is intact, the next step is to test the mirror switch for continuity. If the switch is functioning properly, the next step is to test the power mirror motor for continuity. If both the switch and motor are functioning properly, the final step is to test the mirror control module.
Can I retrofit power mirrors into a vehicle that does not have them?
It is possible to retrofit power mirrors into a vehicle that does not have them, but the process can be complex and often involves significant modifications to the vehicle’s electrical system. It is recommended to consult with a professional installer to ensure the retrofit is done correctly.
How do I adjust the power mirrors on my GM vehicle?
The power mirror adjustment controls are located on the mirror switch. Use the left/right and up/down buttons to adjust the mirror position. Some vehicles also have a mirror memory function that allows you to save and recall mirror positions for different drivers.
Conclusion
Understanding the wiring diagram for power mirrors in your GM vehicle is important to diagnosing and repairing any issues with the mirrors. This article has provided an overview of the components of a typical GM power mirror wiring diagram, examples of two wiring diagrams, and frequently asked questions. If you experience any issues with your power mirrors, follow the steps outlined in this article to troubleshoot and repair the problem.
