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Originally Posted by iwillnc
Does it come about during High RPM?
Or over 50 mph it's constant?
I have a rattle in my passenger floorboard that sometimes sounds always above 4500 RPM.
If nothing else you can put the truck into neutral with the park brake engaged and try to shake the shafts.
In which direction does it sounds like it's coming from?
And your sure it's a knocking and not a clicking?
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It is a knocking noise like bump,bump,bump ... as if something is knocking on the floor
it is intermittent around 45-50 mph but not always does it ...
I dont think it is related with stopping or accelerating , either with turning ...
Also I can feel the bumping in my foot ... The sequencing is around 3-4 bumps per second
I will try to do a shake test to the shaft
Thanks