Rattling When In Low Rpms'

[juice83]

I've had this problem for a while now but i can't figure it out. I've poked my head around everywhere and don't know what it is. It comes from under the hood. It doesn't make noise when i'm in Park and when i'm reving the engine but only when i start to drive i can hear it. Once i'm at my desired speed it doesn't make that vibrating noise. Any ideas?? 02 GMC Sierra SLT 4x4 1500 Thanks..

[shithappens]

I've had this problem for a while now but i can't figure it out. I've poked my head around everywhere and don't know what it is. It comes from under the hood. It doesn't make noise when i'm in Park and when i'm reving the engine but only when i start to drive i can hear it. Once i'm at my desired speed it doesn't make that vibrating noise. Any ideas?? 02 GMC Sierra SLT 4x4 1500 Thanks..

 

When mine did that it was the Catalytic Converter which had started to breakup inside itself. I'll bet your's is the same. They have a 7 year warranty on them from the factory and a 1 year replacement after a new one is installed. Take it to the dealer and have a new one installed for free before the warranty on it runs out.

 

Hope that does it for you!