I have an 06 2500HD with 6.0 4wd and i had the intermediante steering shaft replaced because of popping.. well now theres something in my steering wheel or right below it that is like rattlin and poppin and sound loose. is there an upper shaft? and how much?

 

I've had a similar problem which led to the half shaft being bad. If it's rear-wheel drive then exclude my comment.
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Frtruck Parts should be maintained!