front end on 1997 riv: 40,000 miles
ongoing for more than a year. v irritating.
noticeable creaking, groan noise when wheel deflects upward.
sounds like rubber being forced to move against dry metal.
occurs at lower speeds while passing over undulations in road and while cornering.
interstate cruise-control running is all quiet.
both sides, but left front is worse.
silicone grease was applied to all of the front sway-bar's rubber - mounts & links.
silicone grease was applied to horizontal bushings and bolts in control arms.
again, noise did not go away.
youtube has a number of "Buick Know How" videos.
this one mentions "my noise" at 2:25 minutes into the video presentation:https://www.youtube.com/watch?v=0NZyNHQ46Nc&index=90&list=PLD3PIWmAxLGt9Ei_pljVZ27xRypv0Ynqt
in this video, buick claims the rubber jounce bumpers cause noise.
screenshot at 2:46minutes here:https://s279.photobucket.com/user/Lmckinley99/media/buick_know_how_jounce_bumper.jpeg.html?sort=3&o=0
screenshot at 3:32minutes here:https://s279.photobucket.com/user/Lmckinley99/media/buick_know_how_black_sleeve.jpeg.html?sort=3&o=1
i was skeptical, so before removing the springs from the struts,
lithium grease was applied to the polished steel strut rod where the jounce bumpers ride.
[ necc to remove the wheels & lift the black dust bellows ]
noise is FINALLY gone, but the problem is not correctly fixed.
the grease will attract dirt that will eventually get into the strut's upper seals and ruin them.
has anyone changed the jounce bumpers and/or added the black bushings
as per the buick know-how video ?
[jounce bumper part numb appears to be 25656137 or 22130328]
i cannot find the part number for the "fix' , which is the black bushing
somewhere there is a reference to this part but maybe it is on another forum?