Guide to Replacing the Horn on Your 2008-2018 GMC Sierra 1500
If your Sierra's horn sounds weak or doesn't work at all, here’s what you need to know before you buy a new one.
- Horn failure is often caused by a bad fuse or relay, which should be checked before buying a new horn.
- A weak or high-pitched sound usually means one of the two horns in the assembly has failed, requiring replacement of the unit.
- Replacing the horn is a simple DIY job on most 2008-2018 Sierras, often accessible by removing the top radiator cover.
- Aftermarket brands like ACDelco offer OEM-level quality at a more affordable price point.
Is Your Sierra's Horn Failing?
A problem with your horn isn't just annoying; it can be a safety hazard and might even get you a ticket. The most common issue is the horn not making any sound. However, you might also notice it sounds weak, high-pitched, or only works sometimes. These symptoms don't always mean the horn itself is broken. The problem could be a simple blown fuse, a bad relay, or even a wiring issue.
First, Check the Easy Stuff
Before you spend money on a new horn, check the fuse box. For 2007-2013 models, the horn fuse is typically fuse #29 in the main engine fuse box. 🎬 Watch this guide to troubleshooting 2007-2013 Sierra horn issues For 2014-2018 models, it's usually fuse #48. 🎬 See how to diagnose non-working horns on 2014-2018 models You can also listen for a 'click' from the horn relay in the fuse box when you press the horn. If you hear a click, the relay and horn switch are likely working, and the problem is probably the horn assembly or its wiring.
Choosing the Right Aftermarket Horn
When it's time to replace the horn assembly, you have a few choices. You can go with an OEM part from the dealer, or you can choose an aftermarket part. For the GMC Sierra, aftermarket horns offer a great balance of quality and value.
- ACDelco: As a premium aftermarket brand and a supplier for GM, ACDelco parts are designed to meet original equipment (OE) standards for fit and performance. Choosing an ACDelco horn is the closest you can get to the factory part without paying dealer prices. They are known for their reliability and correct tone.
- Replacement Brand: If you're on a tighter budget, a "Replacement" brand horn can be a good option. These parts are designed as direct-fit replacements and are made from high-grade materials to ensure durability. While they may not have the same brand recognition as ACDelco, they offer a cost-effective solution that gets the job done.
Cost of Horn Replacement for 2008-2018 GMC Sierra 1500
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Horn | $58.96 - $96.49 |
| Shop Labor | $50 - $150 |
| New OEM Horn | $75 - $150+ |
| Used OEM Horn | $20 - $50 |
Cost estimates are based on national averages and may vary by location and vehicle specifics.
Frequently Asked Questions
Where is the horn located on my 2008-2018 GMC Sierra?
The horn assembly is usually mounted behind the front grille. On many 2014-2018 models, you can access it by removing the upper plastic radiator cover without taking off the entire grille or bumper. For earlier models or depending on the exact configuration, you may need to remove the grille or access it from underneath the truck.
Can I replace the horn myself?
Yes, this is a very DIY-friendly job for most people. It typically involves removing a few plastic clips or bolts to access the horn, unplugging the electrical connector, and unbolting the old horn assembly. The new one bolts in its place. The most common tool needed is a 10mm socket. The entire job can often be done in under an hour.
My horn sounds weak or high-pitched. What does that mean?
This is a classic symptom of one of the two horns in the dual-tone assembly failing, often the low-tone horn. This can be caused by water getting inside the horn and causing corrosion or damage. The only fix is to replace the entire horn assembly.
Are there any recalls for the horn on my Sierra?
As of now, there are no specific recalls from the National Highway Traffic Safety Administration (NHTSA) for horn failure on the 2008-2018 GMC Sierra 1500. While some TSBs exist for horn issues on other GM vehicles due to water intrusion, none specifically target this Sierra generation.
The horn doesn't work from the steering wheel, but it works with the panic button. What's the problem?
This points to an issue in the steering column, not the horn itself. The problem is likely with the horn switch contacts or the clock spring, which transfers electrical signals from the steering wheel. This is a more complex repair than simply replacing the horn assembly.
Helpful Videos
Technical Specifications
The GMC Sierra 1500 typically uses a dual-tone (high and low pitch) horn assembly with a single electrical connector. The assembly is usually held in place by a 10mm bolt.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- GMC Sierra 1500: