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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L, Or 6.2L - Troubleshooting & Diagnosis) >> Service Bay Test >> Test Procedure

Test Procedure

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IMPORTANT: If the Service Bay Test aborts or fails a DTC will NOT be set.
  1. Install a scan tool.
  2. Select the Service Bay Test with the scan tool.
    3. CAUTION: Refer to Road Test Caution .
  3. Follow the instructions on the scan tool.
    • If the test aborts, correct the condition for running the test and then retest.
    • If the test fails, repair the vehicle for the condition indicated by the failure message on the scan tool.
  4. Verify that the EVAP I/M system status is set to YES.
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