Home >> Chevrolet >> 2017 >> Volt Premier >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Data Communication System - DTC U1817 To DTC U3012 And Scan Tool Symptoms >> Diagnostic Information and Procedures >> DTC U1860: Electric A/C Compressor Control Module Lost Communication with Hybrid Powertrain Control Module 2 >> Diagnostic Instructions