acceleration cuts out

My Mom's GM cuts out when you accelerate. It will stay a steady speed and then out of no where cuts out. You have to ease off of the gas and eventually it will resume speed. Please help with any ideas of what this could be. It have been hooked to the diagn. computer but the computer finds nothing wrong. Spark plugs have also been replaced.

Thanks!!!

There was a TSB on transmission dropping out of gear under heavy trottle.

It related to replacement of solenoids in transmisson with updated new design.


Is the engine still revving high when problem occurs?

No the engine does not rev...it just seems to loose all gas to the engine..almost like the engines in neutral...thank you so much for helping me!! I'm at my witt's end!