Battery dies in 24hr of no use trouble shooting I have a 2000 blazer 4x4
battery is from 12/12

after 24hr of no use not enough power to start the truck, but the lights in the cabin worked.

I used a test light on the inside fuse box, the ones that light up a wrote down in a list. Then i went back and checked with a DVM.

The list.

2. 0
7. 0
8. .9
13. 0
14. 0
19. .9

fuse #/ results with DVM set to 200mV

Where do i need to go from here?

 

I would check the obvious first. How old is your battery? Charge it and check the voltage with a multimeter. Is your alternator charging the battery properly? With the Blazer running you should see around 14 volts plus at the battery. With the Blazer off you should see 12.9 plus volts at the battery. Newer vehicles with PCM's use more energy to sit than older cars. My truck will kill a new battery if it sits for two weeks. If your charging system is in order then you can look elsewhere.