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2024 Sierra Vibration - Need advice

royalkangaroo
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royalkangaroo Enthusiast

royalkangaroo

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Posted

I have a 2024 Sierra 1500 Elevation 2.7 that I purchased new back in October.  It's had a noticeable vibration, specifically at speeds >40mph since day 1.

 

It's been to the dealership 6 times.  They've balanced tires, changed tires, measured road force of rim and tire assembly. 

 

Two separate technicians have hooked a picoscope up to measure vibrations and claimed they were within spec.  One technician rode with me and acknowledged the vibration, but claimed since it's in spec there's nothing they can do.

 

GM rep has worked with me through this, but claims there's nothing they can do if the dealership cannot find a problem.

 

I don't understand how this vibration can be "within spec" when it's visibly shaking. (See video link below)  My visors, when down, shake.  My body in the driver seat shakes.  I had a bag in the back seat yesterday and I could hear the contents shaking the entire ride. 

 

I have no idea what to do at this point, other than perhaps try another dealership service department for a second opinion. (Or 7th at this point).  Any words of wisdom would be appreciated.

 

 

 

  • 3 weeks later...
  • 10 months later...
24trailboss Enthusiast

24trailboss

Posted
Posted

Typically it is the Torque Converter, I have a 2.7L Trail Boss and between 25-65 MPH at 1300-1500 rpms under light throttle it has a shudder which I almost consider and bobble or a gargle sound. They replaced my TC but it did not help any, others say it has fixed their issues. It has been back twice now with no fix after.

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