Hey Boomer, welcome. Based on your number of posts, can we assume your Savage is fairly new? And, maybe you are too?
Electric trucks are great, and have little maintenance compared to nitro. BUT they still DO need some maintenance. If your truck was running fine, then the motor started getting overheated, and nothing else changed, chances are you have one or more bearings that need attention. One bearing that has locked up can cause enough drag to heat up the motor. The easiest ones to check first are the wheel bearings. They're the ones that get the dirtiest. Take each bearing out and test it for smoothness. If it is gritty or locked up it needs attention.
Using a hobby knife, carefully pry up the inner edge of the rubber bearing shield on both sides of the bearing. Clean out the bearing with motor spray or WD-40 and blow it out with compressed air. Check the bearing for smoothness. If it's still gritty, clean it again. If it was locked up, you may need to take a toothbrush to it. Once clean, replace one shield and add bearing lube to the open side, then reinstall the shield. The bearing should be nice and smooth now. If not, replace it.
Get out the tools and start takin' the truck apart. You've got bearings on the diffs too. Take the diffs out and check all of them, and service any that require it,
If you don't have one, get yourself an infra-red thermometer for monitoring your motor temps. Brushless motors shouldn't get over 170F. Beyond that, you run the risk of the magnets loosing power and or the wire insulation can melt and short.