I have an 03 Yukon XL with 219 K on it that knocks under load, on acceleration in 1st and 2nd gears. Knock goes away at 45 MPH on up to highway speeds. No knock at idle or revved up to 2200 RPM in park or neutral. The knock seems to be rotational as opposed to engine.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.