The 2016 GMC Sierra is a powerful and durable vehicle. One of the essential components of this vehicle is its tail lights. However, tail lights may develop issues over time, which can result in reduced visibility and safety concerns.
If you are experiencing tail light issues with your 2016 GMC Sierra, this article will provide you with a comprehensive guide on how to diagnose and repair the problems. In this article, we will cover the following areas:
What are Tail Lights and their Functions?
Tail lights are essential components of a vehicle that help to provide visibility to other drivers on the road. Typically mounted at the back of a vehicle, they illuminate when the headlights are turned on. Tail lights serve to provide the following functions:
- Helping drivers behind a vehicle to see it in low-light conditions
- Signaling the vehicle’s presence on the road to other drivers
- Indicating when a driver is slowing down or stopping
- Providing a clear indication of the width of a vehicle
In summary, tail lights are crucial to ensure the safety of drivers on the road.
Common Issues with 2016 GMC Sierra Tail Lights
The following are some of the common issues that 2016 GMC Sierra owners experience with their tail lights:
- The tail lights do not illuminate when the headlights are turned on
- The tail lights illuminate but are dim or flickering
- The tail lights are completely non-functional
If you are experiencing any of these issues with your 2016 GMC Sierra tail lights, you will need to diagnose the problem and make the necessary repairs.
Diagnosing Tail Light Issues
When diagnosing tail light issues with your 2016 GMC Sierra, the following steps can help:
- Check the fuses – In some cases, a blown fuse can cause tail light problems. Check the fuse box to ensure that the fuse responsible for the tail lights is not blown.
- Check the bulbs – Faulty bulbs can also be responsible for tail light issues. Check the bulbs and replace any that are faulty.
- Check the wiring – Wiring issues can also cause tail light problems. Inspect the wiring for any cuts, breaks or corrosion that may affect the connection. If you find any damages, replace the wiring.
- Inspect the tail light assembly – In some cases, the tail light assembly itself may be the issue. Inspect the assembly for any cracks, burns or damages. If you notice any damages, replace the tail light assembly.
2016 GMC Sierra Tail Light Wiring Diagram
Below is the 2016 GMC Sierra tail light wiring diagram that can be used to help diagnose any wiring issues:
| Tail Light Wire | Color | Function |
| A | White | Tail Lamp Supply Voltage |
| B | Brown | Tail Lamp Ground |
| C | Dark Green | Right Turn Signal Lamp Supply Voltage |
| D | Light Green | Left Turn Signal Lamp Supply Voltage |
| E | Black | Stop Lamp Supply Voltage |
| F | Tan | Stop Lamp Ground |
Use the wiring diagram to map out the wiring connections and to troubleshoot any wiring issues affecting the tail lights.
GMC Sierra Tail Light FAQs
How do I replace a tail light bulb on my 2016 GMC Sierra?
Replacing a tail light bulb on a 2016 GMC Sierra is a straightforward task that requires the following steps:
- Locate the tail light assembly and remove it from the vehicle.
- Locate the bulb socket and twist it counterclockwise to remove it from the assembly.
- Remove the old bulb from the socket and replace it with a new one.
- Reinsert the socket into the assembly and twist it clockwise to secure it in place.
- Reinstall the tail light assembly onto the vehicle.
What causes my 2016 GMC Sierra tail lights to flicker?
There are several factors that can cause tail lights to flicker on a 2016 GMC Sierra:
- A faulty bulb
- Wiring issues
- An issue with the alternator
If your tail lights are flickering, you will need to diagnose the problem and make the necessary repairs.
How much does it cost to replace a 2016 GMC Sierra tail light?
The cost of replacing a 2016 GMC Sierra tail light will depend on several factors, including the severity of the damage and the location of the repair shop. On average, you can expect to pay between $100 and $300 to replace a 2016 GMC Sierra tail light.
Conclusion
Tail lights are an essential component of any vehicle, including the 2016 GMC Sierra. If you are experiencing issues with your tail lights, the information provided in this article will prove useful in diagnosing and resolving the problem. Remember, safety should always be a priority, and ensuring that your tail lights are functioning correctly is crucial in achieving this goal.
