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chuckhosea 1/26/2013

2004 GMC Yukon Denali XL Base 8 Cyl 6.0L

Transmissions & Drivetrains

what is wrong when i hear an intermittent knocking sound while driving?

the noise is not constant. the noise does not occur when the car is not moving.

1 Answer


Jimm 1/26/2013

Need more information - is the sound localized; from either front or rear, either left or right sides? At waht speeds does the noise occur? Under what road conditions; smooth or rough roads?

Try the 'Diagnose' feature on the AutoMD website to help describe the issue you are having in greater detail for further assistance.


chuckhosea 1/26/2013

sound is more middle to slightly in front of drivers seat. it is very intermittent, as it may not happen for 20 minutes and then may occur for a few seconds and then not again for several minutes while driving down the road. it occurs at both low and high speeds, but has different pitches depending upon the speed. road condition does not matter. oil and transmission fluid levels are ok. it does have slight fluid leak of some sort.

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