I get this same light, all it means is the Onstar has temporarily lost signal. It usually reconnects within a few seconds so no need to worry. A couple of times, I did think I was getting pulled over though...
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1974 Cadillac Coupe DeVille
2002 Camaro Z28 A4 | 10.80 @ 131 | 383ci, D1SC, 4L80E, 9"
2013 Camaro ZL1 A6 | 12.62 @ 113 | Stock *SOLD
2017 Lexus GS350F
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