Circuit/System Verification

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTC C0242 will set as result of the ECM detects a malfunction and then causes traction control (TCS) shut down, until the malfunction has been corrected.

Review Powertrain Symptoms list.

Perform the Diagnostic System Check - Vehicle .
- Diagnose any other Vehicle DTCs before attempting diagnosis of C0242.
With Tech 2, view "Signals" Data Display list under EBCM.
Refer to appropriate module for diagnosing any "invalid" signals.
If no invalid signals are present, view "Signal Fault" data in "Enhanced DTC Data"
Refer to appropriate module for diagnosing that invalid message data.
Do not replace the EBCM due to this DTC fault.