If I have the EB switch on, sometimes if I let off the throttle around 30mph or slower, I get this HUGE lurch just before the EB comes on. Like, huge, snap-your-head-back lurch. Literally I thought I had been rear-ended the first time it happened but there was nobody close behind me. I was not in tow/haul mode. It doesn't happen every time but often enough. I took it to the dealer thinking maybe I needed some program flash update, but they said this was normal operation of the EB. I find that hard to believe. The EB doesn't do this at higher speeds or all the time even slow. Do any of you guys have this happening? Is it normal? Is there anything can be done about it? Thanks.