Question about 2003 GMC Envoy

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Slight vibration and rattle at low RPM. Checked under the car and the only thing I can feel vibrating is a transmission mount on the "cone" of the transmission. Anyone have this problem before?

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  • GMC Master
  • 1,121 Answers

Yes, very common problem. More common is the engine mount, while may look ok, height has been crushed from age. Beware of aftermarket mounts, as they tend to crush more than GM mounts, so the height of the engine/tranny is back to being too low.

Posted on May 31, 2011

  • lin graci Jul 01, 2011

    My suv has the same problem, but we couldn't figure it out. So replacing the engine/tranny mount would fix this?

  • Charles Shaw
    Charles Shaw Mar 02, 2014

    Check for a loose heat shield on the converter.

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