The radio/tuner, radio control/display/Integrated Center Stack (ICS) and Human Machine Interface (HMI) have been placed on restriction for many 2018 GM models. If any of these parts need to be replaced, the Technical Assistance Center (TAC) must be contacted before placing an order from your Electronic Service Center (ESC). Depending on the condition, TAC may require additional information.
One example of required additional information is covered in #PIC6325 for 2018 Sonic, Trax and Terrain models equipped with the Info 3 Low infotainment system (RPO IOR). (Fig. 13) If a blank display or a no audio condition is found on the infotainment system, TAC may refer technicians to the flow chart and questions outlined in #PIC6325 before approving replacement of the radio, radio display or radio controls.
Fig. 13
The flow chart lists a number of diagnostic questions to document, including:
- Have all modules been checked for communication and DTCs?
- Is a device connected via USB or Bluetooth?
- Is the display blank and music audio inoperative?
- Does the rear camera display?
- Does the music volume function with the radio controls or steering wheel controls?
If the flow chart requires a diagnostic procedure in the Service Information to be followed, all steps of the procedure that lead to part replacement also must be documented before calling TAC.
– Thanks to Ryan Dorland
