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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 508 (Engine Controls/Fuel - 5.3L, 6.0L, 6.2L - DTC P0420 To DTC P3449 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Service Bay Test >> Test Procedure

Test Procedure

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NOTE:

If the Service Bay Test aborts or fails, a DTC will NOT be set.

  1. Select the Service Bay Test with the scan tool.
    2. WARNING:

    Refer to Road Test Warning .

  2. Follow the instructions on the scan tool. The EVAP test should pass and should not abort.
    • If the test aborts, correct the condition for running the test, then retest.
    • If the test fails, repair the vehicle for the condition indicated by the failure message on the scan tool.
  3. Verify that the EVAP Inspection/Maintenance system status is set to YES.
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