The 2017 GMC Sierra is a great truck for towing and hauling, but in order to do so, you need to have a proper trailer wiring setup. Without it, you could run into issues with your trailer lights, brakes, and other important components. In this article, we’ll go over everything you need to know about the 2017 GMC Sierra trailer wiring diagram, including how to install it, troubleshoot it, and more.
What is a Trailer Wiring Diagram?
A trailer wiring diagram is a diagram that shows you how to connect the wiring between your truck and trailer. It’s important to have a proper wiring setup to ensure that your trailer lights and brakes function properly, and that your towing experience is safe and hassle-free.
Why is a Trailer Wiring Diagram Important?
A trailer wiring diagram is important for a few reasons. First, it ensures that you have the correct connections between your truck and trailer, which can prevent issues like blown fuses or malfunctioning lights. Second, it can help you troubleshoot any issues that you may encounter while using your trailer, which can save you time and money in the long run.
Where Can I Find a Trailer Wiring Diagram for My 2017 GMC Sierra?
You can usually find a trailer wiring diagram for your 2017 GMC Sierra in your owner’s manual or online. There are also several aftermarket companies that offer wiring kits specifically designed for your truck, which can make installation a breeze.
What Are the Different Types of Wiring Connections?
There are several different types of wiring connections that you may encounter when installing your trailer wiring. Some of the most common include:
- 4-pin
- 5-pin
- 6-pin
- 7-pin
- Round
- Flat
How to Install a Trailer Wiring Diagram on a 2017 GMC Sierra
Now that you know the basics of trailer wiring, let’s go over how to install a trailer wiring diagram on your 2017 GMC Sierra. Here are the steps:
Step 1: Gather Your Tools and Materials
Before you begin, you’ll need to gather a few tools and materials. Here’s what you’ll need:
- Trailer wiring kit
- Wire cutters/strippers
- Electrical tape
- Wrenches
- Socket set
- Screwdrivers
Step 2: Remove the Tail Light Assemblies
The first step in installing your trailer wiring is to remove the tail light assemblies on your GMC Sierra. This will give you access to the wiring that you’ll need to splice into. Use a wrench or socket set to remove the fasteners, and carefully pull the assemblies off.
Step 3: Identify the Wiring Connections
Next, you’ll need to identify the wiring connections that you’ll be splicing into. There will likely be four wires: one for the brake lights, one for the turn signals, one for the running lights, and one for the ground. Use your wiring diagram to help you identify which wires to splice into.
Step 4: Splice into the Wiring
Once you’ve identified the wires that you need to splice into, use your wire cutters and strippers to remove a small section of insulation from each wire. Then, connect the wires from your trailer wiring kit to the corresponding wires on your GMC Sierra, using electrical tape to secure the connections.
Step 5: Test Your Wiring
Once you’ve completed your wiring, test it to make sure that everything is working properly. Turn on your truck and trailer lights, and check that your turn signals, brake lights, and running lights are all functioning as they should be.
FAQ
Q: What size trailer can a 2017 GMC Sierra tow?
A: The 2017 GMC Sierra is capable of towing up to 12,500 pounds, depending on the model and configuration.
Q: Do I need a special license to tow a trailer with my 2017 GMC Sierra?
A: In most cases, you will not need a special license to tow a trailer with your 2017 GMC Sierra. However, if you plan on towing a very large or heavy trailer, you may need to obtain a commercial driver’s license (CDL).
Q: Can I use a 4-pin connector on my trailer?
A: Yes, you can use a 4-pin connector on your trailer. However, this type of connector is typically only used for trailers with basic lighting systems, and may not be sufficient for larger or more complex trailers.
Q: What should I do if my trailer lights aren’t working?
A: If your trailer lights aren’t working, there are a few things that you can check. First, make sure that your connections are secure and that your wiring is properly installed. You should also check your fuses and relays, as well as your trailer’s lighting system.
Conclusion
Installing a trailer wiring diagram on your 2017 GMC Sierra is an important step in ensuring that your towing experience is safe and hassle-free. By following the steps outlined in this article, you can install your wiring with confidence, and troubleshoot any issues that you may encounter along the way. Whether you’re towing a small trailer or a large one, having the proper wiring setup is essential for ensuring that your lights and brakes function properly, and that your towing experience is a success.
