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Home >> GMC >> 2016 >> Yukon Denali, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 112 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC C056E: Electronic Control Unit Software - Calibration Not Learned (Distance Sensing Cruise Control Module) >> Circuit/System Verification
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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.
NOTE:

If DTC C056 with failure type byte 4B is the only DTC set, all that should be needed is to perform the distance sensing cruise control module learn procedure.

  1. Verify DTC C056E 4B is not set.
    • If DTC C056E 4B is set 
    1. Perform the distance sensing cruise control module learn procedure. Refer to Distance Sensing Cruise Control Module Learn Procedure .
    2. Verify the DTC C056E 4B does not set.
      • If the DTC C056E 4B sets, replace the K14 Distance Sensing Cruise Control Module.
      • If the DTC C056E 4B does not set
    3. All OK.
    • If DTC C056E 4B is not set 
  2. All OK
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