GMC Sierra: How to Make a 12-Volt Outlet from Constant Power to Accessory Power
Last Updated on August 19, 2023 by Nick
Cheer up for a new day! If you’re an avid traveler, camper, or just someone who values the convenience of having electronic devices on the go, installing a 12-volt outlet in your GMC Sierra can be a game-changer. Imagine being able to charge your devices, power your camping gear, or even operate a small fridge right from your vehicle. In this guide, we’ll walk you through the process of converting a constant power source to an accessory power source to create a 12-volt outlet in your GMC Sierra. So stick with me.
Table of Contents
Understanding the Difference Between Constant Power and Accessory Power
Before we delve into the installation process, it’s important to understand the distinction between constant power and accessory power in vehicles. Constant power is the type of power that is always available, even when the ignition is turned off. It’s commonly used for functions like memory settings and clock display. Accessory power, on the other hand, is activated when the vehicle’s ignition is in the accessory or on position. It’s the power source used for accessories like the radio and power windows.
Converting a 12-volt outlet powered by accessory power brings several advantages. Firstly, it ensures that the outlet only functions when the vehicle is running, preventing the risk of draining your vehicle’s battery. Additionally, it offers greater convenience as you can now power your devices without worrying about battery depletion. Whether you’re on a road trip or spending time outdoors, this modification enhances the functionality of your GMC Sierra. So let’s get right to work.
How to Make a 12-Volt Outlet from Constant Power to Accessory Power in GMC Sierra
Converting your GMC Sierra’s 12-volt outlet from constant power to accessory power involves a few simple steps. So here’s a detailed guide to help you achieve this:
2014-2018 GMC Sierra
Time needed: 7 minutes
To make outlet power from constant power to accessory power In the 2014, 2015, 2016, 2017, and 2018 GMC Sierra, you need to relocate a fuse in the cabin. So just follow me along.
- Turn off your car
To ensure your safety, turn off your vehicle before starting any electrical work.
- Locate the 50-amp fuse
Next, locate the 50-amp fuse on the driver’s side panel inside the truck. Just pull the cover off to expose the fuse. And here’s the fuse:
- Relocate the fuse
After that, pull the 50-amp fuse and move it to the blank terminal on the left or toward the front of the truck and then reinsert it.
- Check the power outlet
Now check your accessory power outlet is off unless the key is on
2019-2023 GMC Sierra
For 2019, 2020, 2021, 2022, and 2023 GMC Sierra, the method is the same, but the location of the fuse is different. So let’s get it going.
Step 1.
Before diving in, make sure your vehicle is turned off.
Step 2.
The next step is to find the 50-amp fuse on the passenger’s side panel. Just pull the cover off to expose the fuse. And here’s the fuse.
Step 3.
After that, pull the 50-amp fuse out and move it to the left so it uses the terminal that wasn’t being used, then reinsert it and you’re done.
FAQs – GMC Sierra Accessory Power
As long as the modification is done correctly and doesn’t cause any damage to the vehicle, it shouldn’t affect the warranty. However, it’s always a good idea to check with your dealership.
Yes, you can connect multiple accessories as long as their combined power draw doesn’t exceed the capacity of the circuit.
Yes, disconnecting the battery is a safety precaution to prevent any electrical hazards while working.
Yes, you can reverse the process by relocating the fuse back to the original location.
If not done properly, there’s a risk of improper power distribution, electrical shorts, or damage to accessories. Follow the steps carefully and consult a professional if you’re unsure.
Conclusion
So that’s how you do it. Converting a constant power source to an accessory power source to create a 12-volt outlet in your GMC Sierra is a practical and rewarding modification. It adds functionality, convenience, and versatility to your vehicle, making it well-suited for various activities and scenarios. By following the steps outlined in this guide, you can confidently undertake this project and enjoy the benefits of your DIY 12-volt outlet. Thanks for reading and have a nice day!
About The Author
jacob
Hi, I'm Jacob, and I have been passionate about automobiles since I was a child. I have spent countless hours assisting my father in his garage, learning everything there is to know about car maintenance and repair. For ten years, I ran a successful repair business, where I gained hands-on experience working with a variety of vehicles. As a result, I have developed a deep understanding of the mechanics of the car and have become an expert in maintaining and repairing any vehicle.
