2006 Hummer H3 Battery power

2006 HUMMER H3
25,000 MILES • 4 CYL • 4WD • MANUAL
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KURT KNAUTH
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  • 1 POST
My 5cyl Hummer battery lost power after 2 to3 days when the car is not used.But this happens just 2 or 3 times a year
Jan 18, 2009 at 1:23 PM
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2CARPRO JACK
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  • 11,533 POSTS
Could be a sticky relay or the BCM not going to "sleep" when the vehicle is shut down.Either way a little electrical knowledge will be required to find the exact problem. The worst part is that it isnt a constant thing, so it may be very difficult to pinpoint
Jan 19, 2009 at 7:47 AM