general problems of the 2010 Dodge RAM

While driving home 10/20 ~8pm, I was slowing down in freeway traffic ~45mph. I took my foot off the brake and was just about to press down on the accelerator pedal, my truck surged forward for about . 25 of a second (split second). This has happened in the past ~8 times. I notified the dealer at 26,000 mile service and they said it was the enginge switching between the eco mode and normal mode. (5. 7 hemi). Please advise. (I purchased this vehicle new from folsom Dodge, CA. ).