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cmart · 04-13-2009, 05:23 PM

My 99 does it. My uncle bought a 99 new and an 03 new and they both have done it. The dealer kept telling him that it's normal and not to worry about it. He spoke with someone the other day and they were very aware of it and they told him to put a quart of transmission fluid in it when changing the oil. He did and so far it hasn't done it.

I'm kind of skeptical of the tranny fluid, but he's tickled to death with it so far.

04-13-2009, 05:23 PM	#8
cmart Registered User Join Date: Nov 2008 Location: Nashville, TN Posts: 46	Re: Yukon knocking noise? My 99 does it. My uncle bought a 99 new and an 03 new and they both have done it. The dealer kept telling him that it's normal and not to worry about it. He spoke with someone the other day and they were very aware of it and they told him to put a quart of transmission fluid in it when changing the oil. He did and so far it hasn't done it. I'm kind of skeptical of the tranny fluid, but he's tickled to death with it so far. __________________ 1999 Chevrolet Silverado 1500 extended cab, short bed. 5.3L automatic.