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Home >> Cadillac >> 2017 >> Escalade ESV Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Automatic Transmission - 6L80 (MYC) Or 6L90 (MYD) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2771: Four Wheel Drive (4WD) Switch Circuit (NQF, NQH) >> Circuit/System Testing

Circuit/System Testing

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  1. Verify no other DTCs are set.
    • If no other DTCs are set 
  2. Refer to Symptoms - Transfer Case
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