I drive a 1999 Accord EX V6 4 speed auto. I noticed that sometimes when I let go of the gas and let the car coast at around 20mph, as the speed lessens to where I almost stop, I can feel a small clunk or jerk. It only happens sometimes and when the car hasn't been completely warmed up. I normally warm up my car about a minute or two when I first start it in the morning. Is this small clunk/jerk due to the grade logic control? I've read threads about this topic but I would like some more input. Thanks.