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Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Re-calibration with the correct calibrations for the vehicle and cycling the radio to OFF then to ON will clear the DTC if there is no damage to the radio.

DTC B1780

Step Action Yes No
Schematic Reference:  Radio/Audio System Schematics  
Connector End View Reference:  Entertainment Connector End Views  
1 Did you perform the Diagnostic System Check - Radio/Audio System? Go to Step 2  Go to Diagnostic System Check - Radio/Audio System 
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool clear the Radio Theft Information.
Does the DTC Reset?		 Go to Step 3  System OK
3
IMPORTANT: Perform the set up procedure for the radio.
Replace the radio. Refer to Radio Replacement  andRadio Setup .Did you complete the replacement?		 System OK -
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