Hey Guys,
My 2015 Sierra is having an odd problem that I haven't seen before. My temp gauge is fluctuating from 210-225, but only during hard acceleration. it eventually settles back at 210. I replaced the thermostat roughly a year ago due to it staying open and overcooling. I know it wasn't a big problem, but it made me feel better. Any ideas as to what could cause it to change that much in acceleration? It has never done it before and just started not too long ago.
Thanks for the help in advance.
