DTC C0277, C0297, or C0890. Chevrolet Tahoe

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2009 🢒 Tahoe - 4WD 🢒 DTC 🢒 DTC C0277, C0297, or C0890

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC C0277 00: Brake Pedal Position Sensor Calibration Not Learned

DTC C0297 00: Brake Applied Output Circuit

DTC C0890 00: Device Voltage Reference Output 3 Circuit Voltage Out of Range

Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

In the event that DTC C0277, C0297, or C0890 sets as current in the body control module (BCM) is an indication of a possible internal BCM malfunction or programming error. There are no external circuits available to diagnose on this vehicle with respect to these DTCs.

Actions Taken When the DTC Sets

When DTC C0277 is set as current, the vehicle may not start.

Conditions for Clearing the DTC

•	For DTC C0277 the ignition must be cycled before the code can be cleared.

•	A history DTC will clear once 50 malfunction-free ignition cycles have occurred.

•	A DTC will not clear the current status until the next ignition cycle.

Diagnostic Aids

These DTCs may set as current after the replacement of an electronic brake control module (EBCM) or engine control module (ECM). If a control module has been replaced, ensure that the programming procedure and all recalibration procedures have been completed successfully before addressing these DTCs.

Reference Information

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition ON, verify that the DTC is set as current and that no other vehicle system DTCs exists.

⇒	If other vehicle system DTCs exists, address these DTCs before proceeding with this diagnostic test.

Cycle the ignition OFF then ON, clear the DTC with a scan tool and verify that the DTC does not reset as current.

⇒	If the DTC resets as current, replace the BCM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for BCM replacement, setup, and programming