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2005 Silverado 5.3 1500 4WD Drivetrain Noise

woods95662

By woods95662
in Ask A GM Technician

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woods95662 Enthusiast

woods95662

Posted
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My truck has slowly developed a howing/growling noise in the drive train that is accompanied by a slight vibration. You can feel it in the gas pedal & floor board. It's tied to the speed of the vehicle not the gear the transmission is in. It's very noticable at around 60-70 MPH or above when you are giving the truck with just enough throttle to coast on a level surface. Basically feathering it. It becomes more pronounced when you are going downhill and feathering the throttle just enough so you aren't slowing down or gaining speed. You also can hear it for a split second when you let off the gas and the slack in the drivetrain changes to decelerating and then it goes away once the slack is taken up. The hubs and brakes are new changing them did not affect the sound in any way. I didn't expect the hubs to be the issue it didn't sound or feel like that was the problem.

 

I'm looking for some direction on where to start. It feels and sounds like it is coming from the front end or front half of the truck.

thearborbarber Enthusiast

thearborbarber

Posted
Posted

Just going by what you are describing, I'd start looking at the universal joints in the front driveshaft. I have a lifted sub and when the u-joints are going out in it I get the same as you describe.

mawint Enthusiast

mawint

Posted
Posted

I think I have the same problem as you although it has only shown up recently since it got cold.

 

My u-joints are new as of about 2 years ago but to me it sounded like a heat shield rattling. I had a similar experience on another vehicle that the heat shield would rattle and make a funny noise only on acceleration and only while making a right turn. Weirdest thing ever.

 

I have not however had a chance to look at it yet so I'm just guessing. Let me know if you find anything out.

woods95662 Enthusiast

woods95662

Posted
  • Author
Posted

in 2WD. t's definitely not a heat shield it's more of a groan or growling sound tied to the driveline speed. I'm going to check the U Joints that was next on my list I'm just not confident it's the issue.

  • 8 months later...
woods95662 Enthusiast

woods95662

Posted
  • Author
Posted

Update: Well whatever it is it's getting worse. I'm starting to think it's coming from the front end which doesn't make a ton of sense being that it's in 2WD. Hubs were replaced and had no effect. Transfer case is new. Transmission is in good shape I've never had any issues. I'm stumped. I'm also getting a slight whining noise as the truck picks up speed. I'm starting to wonder if a differential is going out on me.

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