GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2007 🢒 H3 🢒 Brakes 🢒 Park Brake 🢒 DTC C0276

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 C0276: Transmission Control Module (TCM) Traction Control Not Allowed

Circuit/System Description

The electronic brake control module (EBCM) may inhibit the Traction Control System (TCS) if a failure occurs with the locking differential or the transfer case.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC
    • The transfer case selected range has been reported as invalid by the transfer case control module (TCCM).
    • The rear differential status has been reported as locked by the TCCM when the vehicle speed is greater than 50 km/h (31 mph) for 10 seconds.

Action Taken When the DTC Sets
    • The EBCM disables the TCS and Vehicle Stability Enhancement System (VSES) for the duration of the ignition cycle.
    • The driver information center (DIC) displays the SERVICE TRACTION message.
    • The DIC displays the SERVICE STAB SYS message.

Conditions for Clearing the DTC
    • The condition for the DTC is no longer present.
    • Using a scan tool, clear the DTC function.

Diagnostic Aids

Check the TCCM for DTCs.