I have a 02 LS v8. It is currently having a battery drain issue. I did some reading online and learned that some of the electronic modules stay on after you turn the car off and get out. Everything I read said that the computers need about 850mA while they are awake and should drop down to 35mA in shutdown mode after about 45 minutes. Any door opening, key fob command, trunk or hood opening, etc would wake the system back up making it pull 850mA for another 45 minutes or so. With that in mind I hooked my multi meter up so I could see the amperage being drawn from the battery. At first it spiked up to about 1200mA then within a few minutes dropped on its own to about 900mA which is supposed to be normal. I came back and checked it 43 minutes later and it was pulling 26mA, pretty much business as usual. I sat and watched it for about 3 minutes when suddenly it jumped back up to 1200mA then back down to 900mA. I came back around 40 minutes later and it was back down to 26mA. Then about 8 minutes later it jumped back up again. So for some reason the computer is waking itself back up. Not sure if one of the modules is bad or what. I don't really know what to do next. Has anyone dealt with this before? Really just needing some advice on how to diognose this further. Any help or ideas would be appreciated, thanks for your guys time.