[Georgeb]

I now have a issue, while in heavy Houston my trans
Temps level gauge jump to the 250 range. The warning light 
Did NOT come on
385 has the trans cooler under coach in front of drive axle

 Now I’m faced with understanding on to proceed with diagnosing 
My problem
Is there a sending unit on trans that powers fans? Does the warning
Failing to come on mean I should think gauge??? Should I think
Jumper wire to fans

I need input before sliding under Coach 
Maybe a work around to get home