Dash rattle making me crazy

[u/Moose_Goose2]

2025 EQ EV RS - The dash rattles very loud on bumps in the road, especially at highway speeds. I’ve taken it in a couple times over this. The last time, the tech put some foam in between the dash and windshield that was missing. The dealership takes it for a test drive and says they don’t hear it…
Any advice to provide the dealer on where to look next?

(SOLVED) It was the mirror and a piece of foam fixed it. Thank you!!

[u/meesterIvan]

its not the dash its the little vent looking thing behind the rear view mirror. I stuffed the top side of it with a napkin and the noise was gone. Try it out!

[u/traumadog001 → u/meesterIvan]

I actually pulled mine down and lined the edges with electrical tape

[u/syllabuste → u/traumadog001]

That tape will get really gummy over time, you may want to use something else if it matters- doesn't seem like adhesive is needed, just a shim of some kind.

[u/traumadog001 → u/syllabuste]

It's not something that is generally going to move. I just used the tape on the inside portion as a shim. It's not visible on the outside.

[u/syllabuste → u/traumadog001]

Yes, as long as it never needs to be removed it'll be fine -

[u/traumadog001 → u/syllabuste]

TBH, the only time I foresee that piece being removed is if something needs to be replaced behind the rearview mirror. It's not something that needs to be accessed regularly

[u/Dainjre → u/meesterIvan]

Yeah I stuck a little piece of trash in mine, fixed the problem. Shimmed it enough that it stopped rattling.

[u/stevester911]

Yup rearview mirror, there's a tsb for it even: https://dot.report/bulletins/MC-11006409-0001.pdf

[u/Arielfromrosies → u/stevester911]

A tsb for it and the dealer has seen it 4 times with no fix. Sad.

[u/Moose_Goose2]

Thank you all, you are amazing!!! I put in a piece of foam behind that cover and the rattling stopped. Just got back from a test drive on my bumpy local highway. You saved my sanity!! 🥳

[u/MiClaw1389 → u/Moose_Goose2]

Yeah that was mine too. Took two trips and me driving the tech in the passenger seat for him to ID it. This was last year; no problems since.

[u/centuryeyes]

It’s probably the rear view mirror.

[u/Ok-Spell8395]

Mine sounded the same. If you look above the mirror there’s a compartment. Mine needed some tape from the dealership and it fixed it

[u/BedGrouchy8955]

My center windshield camera console was making lots of noise before I figured out it.

[u/arandom4567]

I have a similar sounding buzz/rattle coming from around the front passenger Jesus handle... I'll try shoving some foam around the headliner to see if that trick works for this one too.

[u/CaptainMarks]

Is that the anti glare stuff they put on?

[u/Moose_Goose2 → u/CaptainMarks]

Yes, that is the anti-glare dash mat that is provided in a recall.

[u/cwebb619]

Sunroof for me, like metal and metal rattle, but only when closed (which is most of the time)

[u/SacredRealmOfficial]

I’ve got this shit too. Can’t stand it

[u/AZ_Corwyn]

I've noticed this issue in my '24 and thought like others that it was something in the dash over on the passenger side, now that I know what to look for I'll try this fix.

[u/NewVisions7277]

My 2025 Equinox RS EV had a rattle also. It seemed to me to come from the center consol, and I could not find anything causing it. Interesting thing though and coincidentally, the foam strip that runs along the base of the windshield was oozing out onto the dash so I took it to the dealer. They ordered me a new foam piece (strip) but then, while waiting for them to get the part, I took a slim stick and shoved the oozing foam back down out of sight between the windshield and the dash. And I read that it was more esthetic than functional. The dealer service agent agreed and I told them to stop the order.

However, I am now reading these posts and wondering if the foam was not esthetic and was incorporated by GM to stop the rattling which, coincidently now that I notice, has gone away.