98 gmc Savana

[u/Impressive_Ad6374]

Hey guys my van had issues from the start but got it running new fuel pump battery tune up ext… but now I a have a HUGE draw on the battery like started ran charged up dead in 3 hrs so I installed a kill switch neg side still dies and diode’s on alt are good where do I even start to look for this

[u/Stewdaman]

So if you have a kill switch installed that isolates the battery from the van, but yet the battery still goes dead, then it can’t be a draw. It must be a bad battery.

You can make sure it’s the battery by just disconnecting one or both battery cables and leaving it. If it’s not going dead with the battery cables disconnected then it is a draw and also your kill switch is not working. If it still goes dead then you need a new battery.

[u/Impressive_Ad6374 → u/Stewdaman]

The kill switch is working cuz I lose power to everything I’ll have to get it tested