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Retrieving Diagnostic Trouble Codes

DTCs are retrieved by performing powertrain diagnostic system check with Tech 2® scan tool, or other OBD-II compatible scan tool connected to OBD-II 16-pin Data Link Connector (DLC). See DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS . See Fig 1. DLC is located under left side of dash.

Fig 1: Identifying OBD-II Data Link Connector

Courtesy of GENERAL MOTORS CORP.