Re: On Star draining the battery
I had this problem after I didn't renew my OnStar service. If it sat for three days in the garage the battery would be dead. The dealer told me exactly what Hum Tech said that I should deactivate the OnStar with the fuse because it can draw current while it continually searches for a signal. I pulled the fuse on the OnStar and I've never had the drained battery problem since!
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Hummer, like nothing else
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