PontiacBonnevilleClub.com

Hey Guys, My Bonnie's Battery has a parasitic drain somewhere. Are there any 'known issues' for drain, like Power Antenna Lead, etc. that should be checked check first?
Otherwise, I'll start checking everywhere with my meter . Thx.

Power antenna, air compressor, blower motor... they can run when they aren't supposed to if there are problems. Other than that... random shorts. Try feeling for warm fuses when the car is otherwise "cold" and listening real close to relays.

Good points. I also noticed the the Auto Leveling Struts humming when the Car's off too. Going to look into that too.

Check to see if the level sensor arm is still attached to the little knob on the right rear lower a-arm.

This is what I found:

Both Tail lights (The Yellow portion) was filled with water. Even though it looks sealed to the Trunk, evidently it's not. I drilled a few small holes near the Base of the Tail Lights and the water drained out. Weird how the Bulbs never blew...

A pump (located between the Air Intake hose and Washer Fluid Resivor) kept humming intermitently. A few hours after the Car was off, it started humming again by itself. I disconnected it.

Installed a new Battery and my meter is no longer showing power drain.

What's that Pump called that I disconnected?

ELC - Electronic level control. It is what keeps the rear of the vehicle at the correct height. You have a air leak in this system. Most likely the rear struts, but it could be a cracked air line in the system or a leaky connection.

You NEED that system. It has a profound effect on the handling of the car. They are traditional gas struts in the back WITH air assist.