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Home >> GMC >> 2008 >> Yukon Base, 4.8 C >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P1AEC-P1AEF >> Circuit/System Verification

Circuit/System Verification

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  1. Inspect for DTCs P0ABB, P0ABC, P0ABD, or any communication U-code DTCs.
  2. Clear the DTC information.
  3. Turn the ignition OFF for 1 minute.
  4. Turn the ignition ON.
  5. Retest for DTCs P1AEC, P1AED, P1AEE and P1AEF.