2000 GMC Jimmy SLE battery loses power overnight. Current flows between battery and body when the ground cable's disconnected. We pulled every fuse one by one when the ground was disconnected and nothing interrupted the current. The alternator checks out fine on a load tester. Someone suggested the diodes in it are bad. There's a post-factory installed toggle switch in the inside fuse panel and we don't know what it's for (2nd-hand vehicle), but the current flows whether it's on or off. Alternator's charging fine while running.
I've been disconnecting the hot cable on the battery at night and re-attaching it in the mornings. Effective, and a nuisance.
have the same problem?
Sunday, April 3rd, 2011 AT 6:11 AM