So I am running a 2007 GMC for work. But lately, it doesn't want to work as much as I do. The trans keeps overheating for me. Maybe a 20 minute drive will peg the heat gauge. I am thinking that there is a slight chance a coolant line is restricted. Or the pressure regulator is worn. Or the entire thing is a ticking time bomb ready to drop a million pieces on the road leaving me to hitchhike back home. I had it flushed about 12,000 miles ago so that shouldn't be part of the issue. Any experience on this?