Hello everyone, I have a 1999 Yukon 4WD with 271,598 mile on it. After driving it 30-50 miles it stalls and or begin jerking. If I shut the engine off for five minutes or so start back to traveling it will run for another 20 or 30 mile and the problem continue. If driving short distances shut it off you will never know that the problem exist at this point. I have noticed a whining sound after starting it up first morning or when cold, it's also noticable after it's been running for awhile but not all the time or it's not that noticable. Has anyone had this problem? I like to thank you in advance for any information you can provide.