My 2007 Gmc 1500 Classic making weird humming noise coming from the dr

[Terris]

Hi, Im looking for help with my 2007 gmc sierra 1500 classic pick up truck, I started to feel a weird vibrating light howl or humming in which I think its coming from the drive train. When Im driving on a 50km speed limit road I noticed it, when I give it light gas it does it but when I let off the gas it goes away..

 

Any ideas what this could be ??

 

Thanks

[DP_Sierra2014]

Not sure whats going on... but welcome to the forum!

[GMTrucks4life]

Welcome to the forum! Sounds like it might be a fuel injection problem.. I might be wrong tho. Let me know what the mechanic says!