P1000 On board diagnostic system readiness not complete P0500 Vehicle speed sensor circuit malfunction U1039 Invalid or missing data for vehicle speed
You have a VSS that is set, without a VSS the ABS does not know what speed the vehicle is traveling at. this would code a U1039. Take care of the P0500 first.
On the top of the rear differential is the VSS, without this signal the ABS system will become non functional
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