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Re: 2007 Chevy Suburban Transmission Shudder or Vibration
I had a '94 Sub that done the same. Done a transmission flush and fill with thier additive and after several doses of Lucas in the tranny it went away. I assumed it was a vibration right before or after the torque converter locks up? Try driving a steady speed and when it starts lightly touch the brake pedal to disconnect the converter lockup. On mine the shudder would immediately stop.
Bought a new Sub in '02 and it had a bit of the same problem, but a shot of Lucas made it go away.
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