Having problems with your 2003 GMC Yukon Denali ?
2003 gmc yukon denali horn stopped working...is there a fuse?
Should be a relay.
Repair Help & Product Troubleshooting for 2003 GMC Yukon Denali
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.