GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The PCM sends engine/axle/tire IDs to the EBCM via serial data communications immediately after the modules are powered up.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The EBCM fails to receive serial data from the PCM.

Action Taken When the DTC Sets

If equipped, the following actions occur:

    • The EBCM disables the TCS.
    • The traction off indicator turns ON.

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 Data Link Communications

Go to Diagnostic System Check - ABS