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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1506 (Antilock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C1277 or P0856 >> Conditions for Setting the DTC >> C1277

Conditions for Setting the DTC: C1277

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The PCM diagnoses the requested torque signal circuit and sends a serial data message to the EBCM indicating a fault is present.