Exhaust rattle on cold start?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Corpsefed

Full Access Member
Joined
Oct 2, 2022
Posts
186
Reaction score
300
Location
California
I took my truck into the dealership the other day and told them about the rattling (and other concerns) and I was told that it was "normal". To be fair I did drop it off in the morning after about a 30 minute drive. Then the next day I recorded this video after a cold start and then went to the dealership and played it for them. I was told to email the service adviser the video so I did that and sent a link to this thread. My truck is a 6/22 build.

 

HighwaySentinel

︻デ┳═ー - - - - - - -
Joined
Dec 13, 2020
Posts
1,528
Reaction score
3,331
Location
California
Just train your mind to think that when you hear the sweet sound of the cold start rattle that you are about to step in and drive one of the baddest trucks on the road. And, those peons that don't have the privilege of hearing that rattle might as well be driving a prius.

In all seriousness, the rattle is annoying, the lag on getting a fix is a joke, and those who say it is normal can fu(k right off.
 

DMays

FRF Supporting Member
Supporting Member
Joined
Dec 6, 2020
Posts
451
Reaction score
735
Location
Tennessee
I am almost positive this has nothing to do with the rattle people are hearing but you never know. I noticed a metallic rattle when I'd hit rumble strips. I got under the truck and had two very loose bolts on the furthest back skid plate. It's a small skid plate beyond the larger silver skid plate. I tightened those and the rattle is gone. Like I said I doubt this is your cause but may be worth checking. The looser those bolts get the louder the rattle will be.
 

msharpe08

Member
Joined
Jul 16, 2021
Posts
9
Reaction score
13
Location
North Carolina
I had the same rattle noise as well. My rattle was all the time and not just at cold start. Give it just a little bit of throttle and it would go away, but as soon as you let off the throttle the rattle would come back. My dealer ordered a new muffler (Part # ML3Z5230GF) and it took almost a month for the part to arrive. Had it installed today and the rattle noise is gone. While it was in the shop I had the Sagging Heat Shield recall taken care of and there were also two additional recalls that they corrected. Both appear to be software updates. Recall 22S17 - Reprogram Integrated Trailer Relay Module and Recall 22S15 - Powertrain Control Module Software Update.
Just an update to my last post. It's been almost 9 months since the dealer replaced the muffler due to the rattle noise and the noise is still gone. Keep pushing your dealers to fix the issue and replace the muffler. The muffler rattle and the shock clunking noise was driving me nuts. Luckily my dealer fixed both issues (New Muffler and New Shocks).
 

Hemmy

Full Access Member
Joined
Jul 12, 2021
Posts
326
Reaction score
389
Location
Indiana
Just an update to my last post. It's been almost 9 months since the dealer replaced the muffler due to the rattle noise and the noise is still gone. Keep pushing your dealers to fix the issue and replace the muffler. The muffler rattle and the shock clunking noise was driving me nuts. Luckily my dealer fixed both issues (New Muffler and New Shocks).
Apparently we need to come to North Carolina to get our trucks fixed.
 

Syberspace

Full Access Member
Joined
Jan 1, 2021
Posts
641
Reaction score
1,016
Location
Pittsburgh
Anyone get this fixed yet?
Nope.
Just an update to my last post. It's been almost 9 months since the dealer replaced the muffler due to the rattle noise and the noise is still gone. Keep pushing your dealers to fix the issue and replace the muffler. The muffler rattle and the shock clunking noise was driving me nuts. Luckily my dealer fixed both issues (New Muffler and New Shocks).
Had my entire exhaust replaced a few months ago. Rattle came back. Inherent problem with the valves in my opinion. You are lucky and got one that hasn't failed... yet.
 
Top