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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 364 (Engine Controls And Fuel - 5.3L, 6.0L & 6.2L - DTC P0443 Through DTC P3449 And Troubleshooting) >> Diagnostic Information and Procedures >> Evaporative Emission System Diagnosis >> Operating Instructions for the Evaporative Emission System Tester (EEST)

Operating Instructions for the Evaporative Emission System Tester (EEST)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Vehicle Setup

    WARNING:

    Refer to Fuel and Evaporative Emission Pipe Warning .

    CAUTION:

    Refer to Clean, Dry, Low Pressure Gas Source Caution .

    NOTE:

    A large difference between the vehicle temperature and shop temperature will seriously affect the accuracy of the tests. Always allow at least 15 min for the vehicle temperature to adjust to the shop temperature. Refer to Temperature Variation Instructions for more information about vehicle versus shop temperatures.

  1. Engine OFF, open the hood. Position a large fan to blow air under the vehicle onto the fuel tank area.
  2. Connect the red battery clip from the tester to the positive battery terminal.
    3. NOTE:

    The vehicle battery must be fully charged for optimum tester performance.

  3. Connect the black battery clip from the tester to chassis ground.
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