GM Authority Newsletter
I’m looking at getting the ON Star digital upgrade for my 04 Pontiac Grand prix. I was told by a dealer that the digital box for my year of grand prix is no longer produced so i would have to get the FMV if i wanted ON Star. My question is isn’t the digital box for ON Star for the 05-08 Grand Prixs all the same? Therefore shouldn’t that be able to fit into my 04 since its apart of the same generation?
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