[casper1984]

I have a 2001 Grand Am automatic

Well I was ont he highway the other day and was suck in highway ttraffic for about an hour all together well I noticed as soon as we got to the slow moving traffic the temp gauge started moving past half way but once I got into a little faster pace it went down but once at a snail pace it went right back up.Never noticed in city driving any suggestions to start with?

Also after tranny warms up to normal temp after running for a little while I notice after coming to stop light and taking off the tranny stumbles or hops I dont know how to really explain it but acts like its loosing tracking but not for first to second but its not slipping got tranny fluid changed and checkout all is ok.Its like tummbling,hopping,stumbling,skipping its hard to explain