I have a 2008 STS Cadillac that I recently performed a time chain change. I started the vehicle up and it ran for about 3 weeks and now the battery dies overnight. I hooked an amp meter up to the battery cable and proceeded to pull fuses one at a time from all three fuse panels without change to the 2 amp draw. I have waited two hours to ensure sleep mode should be entered and the current draw still remains at 2 amps. What else can be taking that current and not routing thru a fuse from the 3 panels? One thing i did notice which needs to be addressed is the throttle body needs replacement since the solenoid is intermittently firing when the vehicle is off. I did disconnect this and monitored the current which is still 2 amps. Any help is highly appreciated.

 

Found the source of the current drain. Turned out to be the positive cable going in to the alternator. Wedged up next metal tube and was wearing thru rubber boot. I adjusted the connection from bottom side of vehicle giving it 1/4" air gap and rearranged the terminal boot cover. Problem is now 100% gone.