07 Nnbs Vibration

[bell_man]

I have a bad vibration @ 1400 to 1500 rpm only @ 52 to 55 mph. This happens only when I press the gas not @ idle. It went to the dealer and they found my trans leaking and a piece of my torque converter in my trans pan. They said it was torque shutter replaced my converter and rebuilt the trans. It is still doing the same thing. Anyone had this problem before? Know what it might be? Also my truck bounces when I apply brake @ moderate force from above 55mph. My pads,rotors,shoes and drums have all be replaced still happening it has been to the dealer 3 times for that but GM says its normal for the truck to bounce when stopping. Any guesses?

 

its a 07 nnbs 4.8 crew cab 2wd

[Silverado4x4]

Is the truck all stock? Any aftermarket rims? Does the viberation get worse as speed increases above 55mph?

[bell_man]

Is the truck all stock? Any aftermarket rims? Does the vibration get worse as speed increases above MPH?

 

 

It has a a leveling kit spacer under the struts, other than that all stock. It does not get worse only happens at 52-54 mph in the 1400 rpm range only when gas is applied .

[Fyrcaptain]

Might want to try another dealer maybe........ and WELCOME to GMTrucks!