One problem related to gas recirculation valve (egr valve) has been reported for the 2005 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 GMC Yukon based on all problems reported for the 2005 Yukon.
A friend of mine just showed me a letter he got in the mail that is a recall to fix the reduced engine power code that shows a throttle body needs repaired. . The letter says to bring his vehicle in if it is a gm or chevy model less than 10 years old and less than 150000 miles and they will fix it for free. I contacted gm to see if my GMC was on the list and they told me to take it to a dealer and have a diagnostic done. I have already had one done and the codes keep changing, and from what I have read the gm site and other forums gm does not know what the problem and will not recall it unless they have to, my brother is also a mechanic and had it looked over by our college mechanic shop. Still no relief, I am not willing to spend $5000 and it still not fixed. . So I guess since something like it is recalled and I get into an accident because it reduces power on the interstate doing 75mpg, ill can to take legal action? I can't drive it half the time because of the problem. In the summer it starts with reduced power because its 90 degrees outside.