07.5 lmm dash rattle need help

[Rancelot211]

I have a 07.5 lmm ltz package and have a rattle/ vibration in the dash. Worse when cold and always at idle. I have taken the metal plate off the knee bolster. Seems like it's behind the speedo. I have removal everything from the dash and tried felt in various places with no luck. Taken everything off the dash besides the ip itself. Any help would be appreciated!

 

[Harbin_22]

I have seen them have a vibrating rattle where the top of the dash meets the windshield. Used some adhesive backed Velcro and stuck the soft side to the dash.

 

[gmduramax]

I beat the **** out of the dash until it stopped

 

[WVRigrat05]

Mine has done it since new. It got worse when I lowered the idle and cold weather came. Mine has one where the dash meets the defrost plate, one around the radio and one around the passenger wood grain. Drives me bat shit crazy. Yours might be the instrument cluster, mine rattled once and I beat the snot out of it. When the weather breaks I'm gonna tear it apart and put something to silence it.

 

[Rancelot211]

I've had mine apart several times and it seems to move each time lol

 

[NAFLASH]

My dash will rattle when it's cold at an idle. I've punched it a few times but it always comes back. I'm just glad it's not cracked...yet.

 

[Harbin_22]

If it makes you all feel better when I did the AF cam on the new built motor, even with merchant mounts and a poly trans mount, my dash doesn't rattle anymore.

 

[NC-smokinlmm]

I beat the **** out of the dash until it stopped

Haha. Me too...

 

[WVRigrat05]

If it makes you all feel better when I did the AF cam on the new built motor, even with merchant mounts and a poly trans mount, my dash doesn't rattle anymore.

So I only have to put a cam in my truck to kill the dash rattle? Sounds simple enough, haha.

 

[Hernpj01]

So I only have to put a cam in my truck to kill the dash rattle? Sounds simple enough, haha.

lol all mine have rattled

 

[WVRigrat05]

My LLY only had one rattle, and hat was where me and the door panel got in a fight, every LMM I've been in sounds like an old Nissan or Toyota.

 

[Hernpj01]

sorry yeah i meant lmm's, the obs were much better

 

[WVRigrat05]

Had my idle turned back up to 715 and 90% of my rattles are gone.

 

[Rancelot211]

Mine idles around 740

 

[WVRigrat05]

See at 740 mine gets more violent. Sweet spot in mine was 710-730.

 

[Rancelot211]

Gotcha thanks!

 

[NC-smokinlmm]

I sprayed some graphite behind my dash where it rattled and squeaked about once a year and it fixed mine along with a few vicious beatings...