I am experiencing an issue with the cruise control on my 07 V6 Auto. It will maintain set speed fine most of the time, but occaisonally on hills it will accelerate as much as 10 mph over set speed when going UP a hill. This usually happens after the trans. downshifts. I know that if I waste my time going to the dealer I will get the "could not duplicate" BS. Has anyone experienced this or been able to get a fix?