Having problems with your GMC Sierra 1500 ?
Remove spark plug boot 2004 GMC 2500HD - Sierra 1500 GMC Cars & Trucks
Repair Help & Product Troubleshooting for GMC Sierra 1500
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.