Having problems with your GMC Sierra ?
1994 gmc 1500 5.7 hard to start cold
\015 Sent code 12\015
Repair Help & Product Troubleshooting for GMC Sierra
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.