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I am not that menchanically inclined but I think it matches the engine. I was reading the manual and it said somewhere in there that some engine knock was normal and does not indicate a need for higher octane gas.

Bought a 2005 Yukon and whenever I am above 50 mph there is a faint fast click or engine knock if you will. More of a click or ticking sound than a knock per se. Rides and accelerates fine but wondering if this is normal or not?

I am the new owner of a 2005 Used Yukon. I think I paid a great price but looking for some validation from the pro's here. 2005 Black Yukon SLT 39,000 miles. Has DVD Rear entertainment and Navigation system. It appears loaded with all the options. I would say it's very clean. No body...