Vibration and feels like it is sputtering hesitating

2012 GMC ACADIA
120,000 MILES • 0.5L • V6 • 2WD • AUTOMATIC
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STEPHEN LYNAS
  • MEMBER
  • 1 POST
When I’m doing anywhere from 25 mph to35 mph and around 55 mph to 70 mph my vehicle has a vibration and feels like it’s sputtering hesitating, but if you let off gas pedal or give it a little pedal it goes away. You can see the tachometer start to jump a little but not much, I’d say 500 800 rpm's. Does it as well when going up a incline. There’s no codes or misfires. can someone please help?
Dec 13, 2019 at 2:32 AM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good morning,

Sounds like you have a torque converter shutter. That is when the clutches slip in the torque converter under a load.

To confirm, you can go to a parts store and get the additive for the shutter. Add it to the transmission and drive it. It should take effect in about 10-15 miles. If that stops it, the torque converter is bad and must be replaced. If it does not stop it then we need to look elsewhere.

Roy
Dec 13, 2019 at 2:55 AM