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Using Scan Tool

  1. Connect scan tool to Data Link Connector (DLC). DLC is located below left side of instrument panel, to right of steering column. If scan tool powers up, go to next step. If scan tool does not power up, perform TEST A: SCAN TOOL DOES NOT POWER UP under SYSTEM TESTS in BODY CONTROL MODULES - GRAND PRIX article.
  2. Turn ignition switch to RUN position. Using scan tool, attempt to establish communication with Body Control Module (BCM). If scan tool communicates with BCM, go to next step. If scan tool does not communicate with BCM, perform TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - GRAND PRIX article.
  3. Select BCM DISPLAY DTCs function. If any DTCs are retrieved, perform appropriate test in accordance with DTC retrieved. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  . If no DTCs are retrieved, repair by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.
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