2012 GMC 2500 ?

[not_nuf_time]

Hi, I have 2012 gmc 2500(30,000miles), what I have going on is, when its cold out if I go down a curb or hit a bump or hit my brakes(even at a crawling speed) I get a huge crunch in the front end. Its like when I change the pitch angle of the front by turning, braking or angle on an incline that I get this crunch very noticeable even to people outside the truck. I had it in to dealer for two days and they couldn't figure it out(that was last winter in the shop), and it started doing it again this fall.

Also as the truck is used or warms up, it goes away so only last about two or three minutes in cold weather. If anyone has ideas, I'd appreciate the input. Thx

[derbier122x]

It only does this in the colder weather? Sounds like it could be a bushing, but hard to tell without actually seeing/hearing the truck and noise.

[PurpleFloyd]

Ice chunks in the suspension?

[not_nuf_time]

No,on the ice, does it fall winter clean dirty, just when its cold. Bushings makes sense but I would think the techs look there first. thx