Question about 2004 GMC Sierra

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2004 GMC sierra 5.3 eng 1500 transmission shutter 40-55 mph

Transmission shutters and shifts up and down between 40 & 55 mph. It does this with cruise control on and off. It seems to smooth out past 60 mph but still feels a bit strange.The truck only has 24000 miles on it.

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  • prydwen3 May 21, 2009

    I'll give it a try ... It sure cant hurt!

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I too have that problem. I own a 2005 GMC Yukon. Shutters between 40 + 55 mph. I thought for sure the stumble I felt was a plug or coil pack because it only does it under a load. With A/C on the whole truck shakes! But it wasnt the plugs or coil packs. Answers anyone?

Posted on Oct 11, 2009

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  • GMC Master
  • 2,007 Answers

Try changing the fuel filter. I think it's starving for gas and the transmission can't decide what to do.

Posted on May 21, 2009

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