![]() Unique powders optimized for subsonic use result in a low flash signature, ideal for either suppressed or unsuppressed performance. SILENT AND STEALTHY Hornady® Subsonic Ammunition doesn’t have the loud report of a supersonic round, and paired with a suppressor, it’s even quieter. The XTP® bullet in Subsonic Handgun has built a world-class reputation for accuracy and stopping power. Product Features PROVEN PERFORMANCE Performance of 300 Blackout Subsonic meets or exceeds FBI Protocol terminal ballistic test requirements. Powders are selected for optimal performance and consistency from lot to lot. Long grooves in its gilding metal jacket combine with the bullet’s flat profile and the patented Flex Tip® insert within its hollowpoint cavity to help it expand reliably at low velocities. The Sub-X bullet used in Subsonic Rifle features a lead core. Subsonic Handgun utilizes tried-and-true XTP® bullets that expand reliably at subsonic velocities. The video below shows how to test the horn relay.Hornady Subsonic Ammunition - designed for accuracy and performance below the speed of sound - now comes in both rifle and handgun loads. It might be under the dash (not usually the case). The horn relay will be located under your Sonic’s hood in the relay box. The horn button sends power through the clock spring, down the harness, and to the horn relay. It should confirm that the clock spring has failed. You can use an OBDII code reader to determine what is causing it to come on. It’s highly likely that your Chevy Sonic’s airbag light will also be on when the clock spring is bad. If the horn works at different angles or the airbag light goes on and off, that indicates that the clock spring has gone bad. Push the horn button and turn the steering wheel while you continuously press the horn. You can turn the wheel back and forth and observe what happens, or you can use an OBD II scanner (if the airbag light is on). There are two ways to test your Sonic’s clock spring. If your car has steering wheel controls, the inputs for those go through the clockspring as well. On a modern vehicle like the Chevy Sonic, the clock spring supports a minimum of two systems (the airbag and the horn). Broken Clock SpringĪ clock spring allows the steering wheel to rotate without turning the wiring harness inside the steering wheel. Repair as needed and see if the horn works. Is it connected to the horn all the way? Follow it and look for any burned, damaged, or scarred wiring. It’s another quick thing you can check when your Chevy Sonic has a broken horn. Take a look at the horn’s wiring harness. Otherwise your Sonic’s horn will stop working again. You’ll need to determine what caused the horn fuse to fail in the first place. You can pull the fuse and look at the element that connects the two fuse blades. If they both light up the test light, the fuse is OK. If only one of them is hot, then the fuse has failed. Once your test light is grounded, test the Sonic’s horn fuse by touching both electrical contacts. If you have access to a test light, you don’t need to pull the fuse at all.Ĭlamp the test light onto a good ground source (metal that’s not painted that bolts to the body, chassis, engine block, or negative battery terminal). It’s easy to test your Sonic’s horn fuse. ![]() You can also check your car’s manual for a schematic of the fuse locations. A sticker inside the fuse box should tell what each fuse does on the backside of its door. Your Sonic’s horn fuse could be located in the engine compartment or under the dash. Fuse BlownĪ blown fuse is often the reason why your Sonic’s horn stops working and should be the first thing you check (unless the airbag light is on). The horn is typically located behind the front grill on the Chevy Sonic and is usually pretty easy to change if necessary. A test light can make diagnosing a horn that isn’t working much easier. We’ll cover each of them, starting with the easiest and most likely issues and working from there. ![]() If your Chevy Sonic’s horn isn’t working, there are a few potential causes. ![]() A functioning horn is one of a vehicle’s most critical safety features.
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