Have 07 yukon xl. Don't like engine/exhaust noise in vehiclle around town 1000 - 1500 rpm range.Have stock exhaust. Is it possible to put quieter exhaust on either factory or aftermarket? 5.3 flex, 4x4, 25000km.

 

My stock exhaust was so quiet that you couldn't hear it unless you were under hard acceleration. One reason that I put the cat-back exhaust on.

If your's is that noisy, I'd have the dealer check it out.