I have a 2011 silverado 4x2. I have had no issues, it has almost 50k miles. I drove it day before yesterday, got home parked and shut down. 20 minutes later it won't start, the door lock buttons don't work, the key fob doesn't work, I have 0 electrical impulses.

Took the battery out and had it tested, 100% charge. I've never seen this before, any ideas? I checked every fuse in the engine compartment fuse box as well.

 

Is that the original battery? Try jump starting it.

 

I tried jumping it and when that didn't work I pulled the battery and had it tested. No joy

 

Make sure your cables are good, and connected tight. Try to jump it again. Is it the original battery?

 

It is the original battery. I will rebook it up and check all cables and jump it again.

 

Checked all cables and connections and rejumped. Still absolutely nothing.

 

Nothing? No lights no nothing? Battery checks ok, was it tested under a load? Jumped, that nothing, tells me you have a fuseable link burnt. Look at the + cable, see if there is such a link. If not replace or test the battery cables.

 

I have no lights, no anything, even the power door locks don't work. I do have a fuse on the positive terminal but it isn't tripped. I'll replace it tmrw and will shoot the cables again.

 

Check both ends of the battery cables. They have been known to be bad at either end. Pay special attention to the negative cable as it looks like you already checked the positive. A good ground is just as important as a good positive voltage.

 

Terminals might not be making a good connection. Even though there tight doesn't mean anything. You might of so much stuff built up in there that it's not connecting right. Pour some coke ok the terminals or just go over them with some sand paper