Our H3 has an intermittent noise/vibration during low speed acceleration. It is non metallic in nature, sounds somewhat like disturbed airflow through duct work.. Any comments? The dealer stated on the repair order....CND (Could Not Duplicate)
Thanks.

 

I have/had it too...It is like in the very lowest RPM range while just starting to move and hard to dupicate unless you have it in just the right incline and slightly excellerating..

I think it was air ducts too..I took the radio out and packed pillow foam padding up in there behind the radio and the vibration stopped...Maybe I lucked out and wedged some wires and stuff too that could of been rattling..

 

Denny, does this not sound much like my noise that you all diagnosed as the nut loose on the engine heat shield??

 

Sorta..But All my nuts were tight whenI went looking..does your's still make the noise Sarah?

 

Yes Denny, because I have not taken it in yet

 

I know how that is, always on the go hard to take your baby in for a fix up.

 

CHoco, especially when they keep it a week each time and then don't even fix the problem! [:@]

 

I just went out and tighten the exhaust manifold heat shield nuts..all three were rather loose (10mm)

 

Well Denny, take a pic for me and diagram it and I will tighten my own danged nuts! That will be lesson #1 in Hummer H3 mechanics 101! SHOW ME YOUR NUTS!

 

Let me see if I understand this...Dennis had tight nuts when he looked before and then he tightened up three of them (gifted man) and now that his 10 mm nuts are tight once again you would like a picture of his tight nuts???