fuse 37 blows and truck dies. What is it?

Look in your owners manual to see what runs on fuse 37.

Wow.. is it plugged in? Don't need idiot answers. Can't help, don't reply. Owners manual says its vehicle power 5. Don't you think i looked there first? Google does not give any answers to what this is or what fuse 37 protects. All I can tell you is that the truck dies without warning, and starts right back up after replacing fuse 37. No warning lights before the dash displays says reduced engine power... only its not reduced it's off. Cranks fine, no start until fuse is changed.

Mine too. Trying to remember what numbered 40 amp fuse it is before going through the whole box pertaining to the owners manual