Clearing Diagnostic Trouble Codes/ECM Reset Procedure
NOTE:
Some models have an anti-theft code built into the radio circuit. Clearing codes by disconnecting negative battery cable cancels clock and radio settings. Make note of settings before beginning reset procedure. After Engine Control Module (ECM) reset, the radio will not function until code is entered.
To clear codes or to reset ECM, use PDU scan tool or generic scan tool following manufacturer's instructions. Codes can also be cleared by turning ignition off and disconnecting negative battery cable for 30 seconds.