2001 monte carlo battery drains

when car is off it continues to drain 2.1 amps - something is on - last fix was the radio amplifier 3 years ago. not sure if the same problem yet. anyone have any ideas for troubleshooting?

Had the same type of problem on a Grad prix, see www.automotiveforums.com/vbulletin/showthread.php?t=976129 (http://www.automotiveforums.com/vbulletin/showthread.php?t=976129)

wish it was that easy. nothing is apparently on (motor, fan, light, etc.), but drain is happening. so far, only way to not lose starting power is to disconnect negative battery cable every park time.

How old is your battery?
The electric fuel pump, control modules, bells, and whistles can demand alot of power.
Maybe your battery isn't holding a charge like it once did.

battery 3.5 yrs old checks out ok on test. when turn off car and put amp meter to battery cable see 2.1 amps flow (too high - I think normal is 0.2 amps to keep all memory, etc). I will start pulling fuses to try and pin point area. 3 years ago same thing ad took dealer four days to find faulty radio amplifier (is this common on these models?) and replacement fixed it. don't see much chatter on amplifier issue so not sure if I'm just alone on this one.

Isolate the fuse to the Radio amp for a few days.

Removed radio fuse and disconnected Amplifier. That is the problem!! The amp draw is down to 0.04 amps, normal. Will drive without radio, since new Amplifier cost $250.00 and mileage over 100,000, it does not pay to repair.

removed fuse and found amplifier to be the problem. will drive without radio since new part is $250.00 and mileage over 100,000, does not pay to repair. thanks all.