Have a 98' 2500 with a 160k use to pull a 5th wheel still have factory joints on it should I replace everything seems tight under there no play at all

Personally i would leave them alone untill they started making noise.

I agree with kenny, you don't have to replace them if they are tight, but when you do I would recomend that you find some place that sales spicer u-joints, they are a much better joint than anything esle I have seen on the market.

THX for the info from all answered my ?:grinyes: