Slight "jerking" feeling
 

Hello,

We have a 2003 GX-470 that has appx 131,000 miles. Recently, we've noticed that when at stop light, we noticed what I can only describe as a slight jerk feeling while at the stop light. It seems to idle at a normal rpm, but just seems to do like a suttle jerk forward feeling, sometimes once, sometimes twice while at a stop light. Any ideas what could be causing this?

tks,