New Noise Developing

[THE SILVERADO]

My truck started making a new noise recently. I notice it while in gear at intersections or drive thrus when holding

the brake. When it is put in neutral or park, the sound goes away completely. It's kind of a rattling sound and seems to be coming from or near

the firewall would be my guess? Anyone else experience similar issues? Any help is greatly appreciated.

 

Thanks!

[gmtech4]

Got audio of a noise for us in the internet ? Our crystal balls are inop at the moment lol

 

Could be anything , exh leak around manifold/pipe

[THE SILVERADO]

No, I don't have audio of it. If I can get some help, maybe I'll try to record it.

[gmtech4]

its really worth while to get an audio clip because its a complete waste of time just having a conversation about a guess or 10 ,,,,there is alot of talented people here as you know with 180 posts ,,,

 

i just hate guessing for people ,i never know what they'll do with info thats wrong

[THE SILVERADO]

Thanks govtech4, I'll see if I can get a snippet of it.