I have a 1990 chevy k15 with the stock 350 motor. the motor still runs great, but I'm having a problem whenever I tow. After towing, once I shut truck off, it will not start right up. I have to wait 15-20 minutes before it will start. NO click on starter, no turn over, still have power to lights and electric items. I can drive the truck all week (without trailer) and it always starts up even if i shut it off and start right away. Is there an overheat sensor or something? Any ideas would be greatly appreciated. Thanks

 

maybe a bad starter solenoid.

 

Would be my guess

 

why would that happen only after towing? it starts right up everytime i'm not towwing something. is it because it gets too hot towing maybe?