Is Onstar killing my battery?
#12
RE: Is Onstar killing my battery?
Hmmm. I'll have to drop it off at the dealer then. I really dont have any major aftermarket electronic stuff other than a radar dectector which I unplug (it has battery run down protection in it anyway). I have already had one bad delco battery so this may be #2. The reason i was thinking my onstar was active while the truck is off is that last summerI was getting vehicle diag reports but didn't drive the truck for 3 months. So I was thinking that the truck was calling mother ship at some point to send a status.
#14
RE: Is Onstar killing my battery?
They can also unlock your doors when it is off, so at some level the OnStar system has to be operating 24/7. I would say at a minimum its equal to a charging phone but i would guess its more like a constant powered on cell phone (not the new super efficient ones either)
#15
RE: Is Onstar killing my battery?
Disconect the + terminal on the battery and check the amp draw with a VOM with everything turned off.
Anything over .5 amps is to high and will drain the battery within a week.
Anything over .5 amps is to high and will drain the battery within a week.
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DetroitWonk
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03-10-2008 12:07 PM