Re: On-Star trouble
My OnStar went dead about six months ago, and the dealer replaced the fuse. Then, a couple of months ago it went dead again, and the dealer said that an "OnStar module" was defective. They replaced it and said that the Onstar power light, which is usually green, but was red, would turn green again within 24 hours. It never did. It would act as you described - try to dial, but never get a connection. I took it back, and they determined that there was a loose connection to the antenna, and they fixed that.
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