Hey Scotty I have a 99 firebird 3.8 automatic with 200k miles and it has an electrical problem. I checked the fuses and they were good the battery is new and so is the alternator. You’ve got any idea what it could be. Problem is that the battery drains after 6 hours of not being driven
Here's Scotty's vidy on how to locate the drain. There are other methods also. Depending on your knowledge, tools and ability, other methods may be easier for you. The simplest way (opinion) is check current through each fuse by a voltage measurement but can't be done immediately after car is turned off as some components haven't gone to sleep yet (still draw current for a time by design). Readings some understanding and knowledge that I will not assume someone has.
https://www.powerprobetek.com/wp-content/uploads/2018/12/fuse-charts.pdf
You can also just start removing fuses and you'll eventually find the circuit causing the drain, time consuming. If you do this, I'd start with the radio fuse first.
Pls keep us posted to progress.
