A slick trick
The top rubber on the shock comes unglued from its eyelet.. so, the shock cam move back and forth on the eye.. the trick is to simply take the bolt out and slip an O ring in between the eye and the mount That sandwiches the rubber so it can not move side to side ... the rubber can't move and is still good , it is just unglued from the eye ,but can not get out cuz it is sandwiched .

Done many of them and this trick last for years .
..or, as said , change the whole shock.. much harder and same results.

If you look real close at idle , you will see it moving sideways and rattleing to beat the band .. usually does it in gear at idle ..amd will drive one nutzzz

... just make sure your has the shock, as there was a mid-year change and the newer belt tensioner did away with the shock.