Hi. The truck does this sometimes and other times it does not. The
truck reaches high RPM before it shift into the next gear and then it
gives a 'buck'. After the truck bucks, then the light on the shift knob
starts to blink. It continues to do this until the vehicle is shut
down. Then, it might not do it again until later in the day. It does it
when the truck is warm and when its cold. I think its somekind of
module problem. comments appreciated please.