Having problems with your 2001 GMC Yukon XL ?
2001 GMC Yukon XL 5.3L - Engine Timing
\015 How do I check the engine timing...came back from a road trip and engine is idling rough...wonder if my timing belt/chain slipped.\015
Doubt it. try a code reader. Sound like an emissions problem
Repair Help & Product Troubleshooting for 2001 GMC Yukon XL
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.