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Rear Heating Ventilation Air Conditioning Module

NOTE: Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the PCM DTC Chart .
DTC Description Action to Take
U0140:00 Lost Communication With Body Control Module: No Sub Type Information GO to Pinpoint Test Z .
U0164:00 Lost Communication With HVAC Control Module: No Sub Type Information REFER to Module Communications Network to diagnose lost communication with the HVAC module.
U0422:68 Invalid Data Received From Body Control Module: Event Information RETRIEVE and REPAIR all non-network DTCs in the BCM. REFER to Multifunction Electronic Modules DTC Chart.
U3000:41 Control Module: General Checksum Failure INSTALL a new Rear Heating Ventilation Air Conditioning (RHVAC) module. REFER to Auxiliary Climate Control .
U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test G .
U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test G .
All Other DTCs - REFER to Multifunction Electronic Modules .
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