Oldsmobile Bravada Battery Drain

About Three Weeks Ago, I Started To Get A Drain Off My Battery, And It Will Happen Even If The Key Is Off, No Accessories Plugged Into Power...

The Vehicle Battery Is At Full Charge. As Soon As I Hook Up The Positive Cable It Goes From 12.7 Volts Down To 4.5 Volts, I Take The...

Had Problem With Some Kind Of Circuit,,battery Drains Off Complete,,new Battery,,check The Alternator And Is Good,,

I Have Replaced The Battery And Replaced The Alternator But When Going Out The Next Day The Battery Is Dead. When Checking The Fuses I...