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Home >> Chevrolet >> 2016 >> Suburban 3500 HD LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 65 (Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B12A4: Infotainment Faceplate Control Module >> Circuit/System Verification

Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 GMC Yukon XL, 2015 GMC Yukon, 2015 Chevrolet Tahoe, 2015 Chevrolet Suburban, and 2015 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify DTC B12A4 39 is not set.
    • If DTC B12A4 39 is set 

      Replace the P17 Info Display Module.

    • If DTC B12A4 39 is not set 
  3. Verify DTC B12A4 45 is not set.
    • If DTC B12A4 45 is set 
    1. Program the P17 Info Display Module.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the P17 Info Display Module.
      • If the DTC does not set
    3. All OK
    • If DTC B12A4 45 is not set 
  4. All OK.
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