Hello everyone. I’m new here and would really appreciate some help. I have a 2005 SL jimmy and it’s recently come to have a lot of electrical issues I think…. It started with dying over night, then progressed into not wanting to run at all, I put a new alternator in it and that fixed the running issue, then I put a new battery in it and that fixed all this issue….. for about 3 days then it went back to not wanting to start after sitting over night and not really running healthy. I’ve been going through and cleaning grounds (I’ve only found and cleaned like 3 under the battery. The ac compressor is now almost killing the truck and turning the steering wheel is dropping the rpm. It only idles at 500-600 rpm. I have no clue what to do as I’m only 20 and have never really worked on cars. Any help would be appreciated, thank you