GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hi and thank you for your question. My name is ***** ***** I'll do my best to help. Can you explain to me what you experienced? Did the vehicle suddenly stall, run rough, or just lose power? What makes you think the vacuum lines are the issue?
ok, I don't think the line you are referring to could cause the engine to stall...did it just stall or run rough first?
Did they not move while driving straight or turning?
Sounds like the vacuum line leak has actually caused the 4WD to engage...has the vacuum line been repaired?
The 4WD system on that vehicle is controlled via vacuum.
ok, once you fix the line let me know how it operates, ok?