H3 Metal noise when driving

[chaos254]

Could also be an exhaust leak from the manifold.

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[alrock]

Tapping noise? Rattle? On start up it could be serious. Speaking of noises, ever take care of the tcase issue?

Maybe you can help me too. I have a loud noise that begins whenever I start the truck. Gets a lot louder when I step on the gas, as well as going through tunnels. Also louder with the windows down. Seems to be in the front end but resonates through to the back end too, through the muffler. Gets a lot louder when I open the hood. Doesn't matter if the truck is rolling or stopped. Goes away whenever I shut off the truck.

 

[Zach]

Maybe you can help me too. I have a loud noise that begins whenever I start the truck. Gets a lot louder when I step on the gas, as well as going through tunnels. Also louder with the windows down. Seems to be in the front end but resonates through to the back end too, through the muffler. Gets a lot louder when I open the hood. Doesn't matter if the truck is rolling or stopped. Goes away whenever I shut off the truck.

Apparently you have have a huge issue going on. And it concerns me. With all the responses I had for parting out a 3. You might want to go that route and step up to a 2. Or I've heard Avalanches are cool too. No issues there lol.