2012 Suburban 2500 LT vibration @ 1500-2000 rpm

[Sloguy]

I recently bought a 2012 Suburban 2500 with the 6.0. Love the truck but I notice a slight vibration in any gear when between 1500 to 2000 rpm range. Coasting down hill, no problem. Only when maintaining speed. A very obvious droning noise can be heard. After running for while then stopping and setting still, in gear with foot on brake, the truck will at times noticeably vibrate on and off. I have appointment with a dealer tomorrow but am afraid they'll tell me there's no problem. Truck is like new in and out, perfect, owned previously by a GM dealership. Clean car fax. We purchased from individual who sells higher end vehicles @ 7800 mls. Has 9k on it now. Both of my other 2500 trucks are perfectly smooth so I know it's not just their nature. Just wondering if GM may have a bulletin out dealing with an issue or anyone else has experienced anything similar. Any help will be appreciated.

[GMCustomerService]

Hello Sloguy,

I apologize that you have experienced this with your newly acquired Suburban! How did your dealership visit go? If you would like me to follow up on anything for you please reach out via private message including your full name and contact information, VIN, current mileage, and involved dealership.

Sincerely,

Jonathan A. (Assisting Jennifer)
GM Customer Care

[Sloguy]

Hi Jonathan,

 

Thank you very much for your inquiry. Unfortunately I had to cancel the appointment due to sickness. I plan to reschedule soon though and see how things go. If you will still be around i will let you know how things go as soon as I can reschedule, hopefully this week. Thanks again.

 

Regards,

 

G. Hughes

[mike94silverado]

9k.... Hope they get it fixed for you!

 

 

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[Charlie5280]

I recently bought a 2012 Suburban 2500 with the 6.0. Love the truck but I notice a slight vibration in any gear when between 1500 to 2000 rpm range. Coasting down hill, no problem. Only when maintaining speed. A very obvious droning noise can be heard. After running for while then stopping and setting still, in gear with foot on brake, the truck will at times noticeably vibrate on and off. I have appointment with a dealer tomorrow but am afraid they'll tell me there's no problem. Truck is like new in and out, perfect, owned previously by a GM dealership. Clean car fax. We purchased from individual who sells higher end vehicles @ 7800 mls. Has 9k on it now. Both of my other 2500 trucks are perfectly smooth so I know it's not just their nature. Just wondering if GM may have a bulletin out dealing with an issue or anyone else has experienced anything similar. Any help will be appreciated.

 

Could be a motor mount that had a factory defect. Pretty easy fix and when GM makes over 500,000 trucks a year, not entirely uncommon within engineering tolerances.

Definitely not a big issue, you should be A-OK