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Home >> GMC >> 2018 >> Yukon XL SLT, 4WD, Gas >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System - Diagnostic Information And Procedures >> Diagnostic Information And Procedures >> DTC U1833: Lost Communication With Electronic Brake Control Module On Chassis Expansion CAN Bus >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON/Vehicle In Service Mode.
  2. Verify that DTC U0073, U0074, U0075, U0076, U0077, U0078, U007A, U007B, U007C, U007D, U1814, U2099, U2100, B1325, B1330, B1370, B1380, B1424, B1440, B1441, B1517, C0800, C0899, C12E1, P0560, P0562, P06E4, or P1EB9 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Refer to Circuit/System Testing.
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