Silverado 5.3 LTZ z71 93,000miles. When I initially start my truck for the first 5-10 minutes of the drive I can hear a fluttering @ low rpm and squeaking @ higher rpm’s coming from what sounds like the front drivers side down by my feet. It changes with the shifting of gears. When rev it up in park I don’t hear it. If I’m driving and out it in neutral I don’t hear it. It’s only audible when I’m drive. I apologize if this has been talked about 300 times. I tried searching the forums but didn’t find anything similar.

 

something in the brakes or driveline I guess. Jack up the front, get it going, and find the sound.

 

4x4 or 2 wheel drive?

 

aren't all Z71 trims 4x4?

 

It’s 4x4

 

If you don't hear it when rolling in neutral and you think the noise is more front left, maybe something to do with the transfer case area?