Mystery Battery Draw While Parked UPDATE
Update 13 Jan-- ----------- Never know--somebody on here might have an idea what to look for, thanks for any help. 2003 Chev 2500HD LT (so has lots of electrical stuff that works with ignition...
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It may be tedious but I'd start removing fuses, one at a time, check current draw after each fuse removed ... reinstall the removed fuse and move on.
