So yeah, I’m posting about this a little late but it’s been about a month without heat and I can’t take it anymore! Basically, I parked my truck to wash it, got it all washed up, and then it wouldn’t start, it had power to the cluster, but the battery drained in a matter of 35-45min, odd, so I thought it could be the battery so I charged it up, and it started, so I moved the truck parked it, and came out 30 min later to make a grocery run, and boom, dead again, finally after much much pulling and starting and pulling and starting, I found out it was something to do with the heat, so I pulled the fuse to the whole heat/ac system (for just the front of the cab, so the rear seat heat/ac works) And now the battery holds a charge, ive gone too long without heat and it’s been mid to low 30’s at best lately, anyone got some advice as to where I should start?

Which fuse ?
does the fan run with the car off

Isn’t that the abs fuse?

not according to my owners manual? Even if it is, how come me taking it out messed with my heater/ac

Look at the pic you posted compare the owners manual pages with the amps on the fuses , it starts from the bottom

It’s descending order

so this means something with ABS was causing my drain?