For 1990-2009 cars only
DTC C0267 or C0268 and C067 or C068 for GMC Truck Canyon Pickup - 2WD 2004
Circuit Description
The electronic brake control module (EBCM) receives various serial data messages from other modules during normal system operation. In vehicles that are equipped with traction control, the EBCM is much more dependant on serial data messages than the EBCM in vehicles not equipped with traction control.
Conditions for Running the DTC
The ignition is ON.
Conditions for setting the DTC
The EBCM does not receive any one of a number of required serial data messages after the message is requested.
Action Taken When the DTC Sets
| • | The EBCM sets DTC C0268 for as long as the Condition for setting the DTC is present. |
| • | The EBCM disables the TCS if the vehicle is equipped with traction control. |
| • | The traction fault message is displayed if the vehicle is equipped with traction control. |
Conditions for Clearing the DTC
The conditions for setting the DTC are no longer present and you use the scan tool Clear DTCs function.
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the ABS Diagnostic System Check? | Go to Scan Tool Does Not Communicate with Class 2 Device in Body |
