I have a brake question. on 2006 Chevrolet Impala SS

How much will it cost me to replace a backup value? No one I've asked so far has ever heard of his part. I have OnStar and it said I needed to replace the value.

Asked by for the 2006 Chevrolet Impala SS
1 answer
This may refer to a software upgrade or update or repair. Have you called GM?