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  1. Clunking sounds then CEL, codes C1207 C1225

    Generation 2 Volt (2016-2020)
    2013 Volt Base Pulled out of the driveway, made it maybe 40 yards then heard clunking sounds then CEL, returned to driveway, called Onstar and got the codes: C1207 C1225 These both seem to be related to the ABS, but it's hard to find anything on Google. Anyone know anything about these codes?