hey guys! i was on the freeway today and seems like the transmission was surging trying to lockup a gear. seem to surge about 300 rpms and i just pushed the gas harder to get it into a better rpm range. i tink it happened right in 1500 rpm range. i have 3.21 which is easy to lug the engine. i think my truck build date was in july. was there a service update or programming update?