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Home › Buick › 2004 › Century Custom › Repair and Diagnosis › Engine Performance › System › Engine Controls 3.1L (Troubleshooting & Diagnosis) › Engine Controls › Service Bay Test › Test Procedure

Test Procedure

  1. Install a scan tool.
  2. With a scan tool, select the service bay test in the special functions menu.
  3. Follow the instructions on the scan tool.
  4. Check DTCs with a scan tool.
  5. Continue with the published service manual diagnostic DTC procedure.
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