OnStar Phone Number

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In the meantime, here are recent comments from other OnStar customers who called 888-466-7827:
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   best ever. very quick and very helpful.
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   I discussed my issue and was immediately transferred to the appropriate individual to help me...
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   To get a tire change 2 hrs. Onstar does not take responsibility over their actions. Horribl...
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   Been onstar customer for 4 years. Needed roadside assistance and finally just gave up . Expla...
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   it was great they kept in touch with me because I was not at my car when the tow truck arrive...
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