GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Regal 🢒 Brakes 🢒 Antilock Brake System 🢒 Clearing DTCs

Use one of the two following methods in order to erase the DTCs in the EBCM/EBTCM memory:

    • The Scan Tool method
    • The ignition cycle default method

Verify the proper system operation and the absence of DTCs after completing the clearing procedure.

The EBCM/EBTCM will not permit DTC clearing until all of the DTCs have been displayed.

The following methods will not clear the DTCs:

    • Unplugging the EBCM/EBTCM
    • Disconnecting the battery cables
    • Turning off the ignition switch (except on an ignition cycle default)

Scan Tool Method

Use the following procedure in order to clear the DTCs with the Scan Tool:

  1. Select DTC(s) for Diagnostic Trouble Codes.
  2. View the DTCs.
  3. After all of the DTCs have been displayed, the Scan Tool will display the following question: CLEAR DTCs?

    4. Answer YES

  4. The Scan Tool will display the following message: History Data Will Be Lost. Clear DTCs?

    5. Answer YES

    This action will clear the DTCs.

Ignition Cycle Default

Existing DTCs automatically clear from the EBCM/EBTCM memory if no diagnostic trouble codes occur for 100 drive cycles.

A drive cycle occurs when the ignition is turned to RUN and the vehicle is driven faster than 16 km/h (10 mph).