Enable the Perimeter Lighting feature within the vehicle settings menu to turn on the puddle lights on a GMC Sierra.
To turn on puddle lights, access the infotainment system and select Settings, then Vehicle, and choose Comfort and Convenience. Enable the Perimeter Lighting option to ensure the lights illuminate when unlocking the truck. You can also trigger them by pressing the unlock button on your remote key fob during low-light conditions.
Steps to Enable Puddle Lights via Vehicle Settings
- Turn the vehicle ignition to the On or Accessory position.
- On the infotainment home screen, select the Settings icon.
- Scroll down and tap on the Vehicle menu.
- Select Comfort and Convenience from the list.
- Locate Perimeter Lighting and switch the toggle to the On position.
Activation Methods and Durations
| Activation Method | Required Tool | Illumination Duration |
|---|---|---|
| Infotainment Menu | Internal Screen | Permanent System Setting |
| Key Fob Unlock | Remote Key | 30 to 60 Seconds |
| Door Handle Entry | Physical Interaction | Until Door is Latched |
Factors That Affect Light Operation
- Ambient Light Sensor: The system uses a sensor to detect darkness. Puddle lights will usually not activate during bright daylight to save energy.
- Exterior Lighting Dial: Ensure the light control knob on the dashboard is set to Auto. If it is in the Off position, perimeter lights may not function.
- Dome Light Override: Verify that the interior dome light override button is not engaged, as this can occasionally interfere with the exterior entry lighting sequence.
- Battery Saver Mode: If the vehicle battery is low, the computer may disable non-essential lighting to conserve power for starting the engine.
Alternative Activation for Mirror Task Lights
Some models feature forward-facing task lights on the mirrors in addition to downward-facing puddle lights. These are controlled by a physical button located on the dashboard, typically to the left of the steering wheel. Unlike puddle lights, these must be manually toggled and usually only function when the vehicle is in park or moving at very low speeds.