October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Retrieving Diagnostic Trouble Codes

DTCs are retrieved using a Tech 2 scan tool, or other OBD-II compatible scan tool connected to OBD-II 16-pin Data Link Connector (DLC). See POWERTRAIN DIAGNOSTIC SYSTEM CHECK . See Fig 1 . DLC is located below left side of dash.

Fig 1: Identifying OBD-II Data Link Connector Terminals

Courtesy of GENERAL MOTORS CORP.